Publish

- @strudel/codemirror@1.2.3
 - @strudel/core@1.2.3
 - @strudel/csound@1.2.4
 - @strudel/draw@1.2.3
 - @strudel/embed@1.1.1
 - @strudel/gamepad@1.2.3
 - @strudel/hydra@1.2.3
 - @strudel/midi@1.2.4
 - @strudel/mini@1.2.3
 - mondolang@1.1.1
 - @strudel/mondo@1.1.1
 - @strudel/motion@1.2.3
 - @strudel/mqtt@1.2.3
 - @strudel/osc@1.2.3
 - @strudel/reference@1.2.1
 - @strudel/repl@1.2.4
 - @strudel/serial@1.2.3
 - @strudel/soundfonts@1.2.4
 - superdough@1.2.4
 - @strudel/tonal@1.2.3
 - @strudel/transpiler@1.2.3
 - @strudel/web@1.2.4
 - @strudel/webaudio@1.2.4
 - @strudel/xen@1.2.3

.forgejo/workflows/test.yml

@@ -1,6 +1,6 @@
 name: Strudel tests
 
-on: [push, pull_request]
+on: [push]
 
 jobs:
   build:
@@ -11,13 +11,15 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4
+      - name: apt install ztd
+        run: apt update && apt install -y zstd
       - uses: pnpm/action-setup@v4
         with:
           version: 9.12.2
       - uses: actions/setup-node@v4
         with:
           node-version: ${{ matrix.node-version }}
-          # cache: 'pnpm'
+          cache: 'pnpm'
       - run: pnpm install
       - run: pnpm run format-check
       - run: pnpm run lint

CONTRIBUTING.md

@@ -17,7 +17,7 @@ git remote set-url origin git@codeberg.org:uzu/strudel.git
 
 To get in touch with the contributors, either
 
-- [join the Tidal Discord Channel](https://discord.gg/remJ6gQA) and go to the #strudel channel
+- [join the Tidal Discord Channel](https://discord.com/invite/HGEdXmRkzT) and go to the #strudel channel
 - Find related discussions on the [tidal club forum](https://club.tidalcycles.org/)
 
 ## Ask a Question
@@ -150,6 +150,7 @@ Important: Always publish with `pnpm`, as `npm` does not support overriding main
 
 
 ## useful commands
+
 ```sh
 #regenerate the test snapshots (ex: when updating or creating new pattern functions)
 pnpm snapshot 
@@ -160,6 +161,81 @@ pnpm run osc
 #build the standalone version
 pnpm tauri build
 ```
+
+## version tag patching
+
+here's a little guide on how to patch patterns in the database to prevent breaking old patterns due to breaking changes in newer versions.
+
+the general tactic is to use `// @version x.y` to tag a pattern with a specific strudel version. when a pattern is evaluated, this metadata will de-activate any breaking changes that came after the specified version. 
+for example, in version 1.1, the default value for `fanchor` was changed from `0.5` to `0`.
+if play a pattern that was made before that change, sounds that use filter evenlopes can sound very different, so by adding `// @version 1.0` will make it sound like it used to.
+before releasing a new version with breaking changes, we can edit all patterns in the database, inserting the version tag they were created under:
+
+as an example, to release version 1.2, do the following:
+
+1. get date range
+
+```sh
+# get date of last version:
+git log -1 --format=%aI @strudel/core@1.1.0
+# 2024-05-31T23:07:26+02:00
+
+# get date of current version:
+git log -1 --format=%aI @strudel/core@1.2.0
+# 2025-05-01T12:39:24+02:00
+# might also use todays timestamp if version is not yet released
+```
+
+now we know, all patterns between these 2 dates have to receive a version tag (unless they already have one).
+
+2. get patterns in question
+
+```sql
+SELECT *
+FROM code_v1
+WHERE code NOT LIKE '%@version%'
+AND created_at > '2024-05-31T23:07:26+02:00'
+AND created_at < '2025-05-01T12:39:24+02:00'
+ORDER BY created_at ASC;
+```
+
+this gives us all unversioned patterns that were saved between 1.1.0 and 1.2.0. in this case, it's 9373 patterns!
+
+3. insert version tags
+
+we are now ready to insert the version tag to these patterns.
+before updating thousands of patterns, it's probably a good idea to test if a single one gets udpated:
+
+```sql
+UPDATE code_v1
+SET code = code || E'\n// @version 1.1'
+WHERE hash = 'Ns2sMB40yIw4';
+```
+
+after [verifying](https://strudel.cc/?Ns2sMB40yIw4) that the version tag has been added, let's insert it everywhere:
+
+```sql
+UPDATE code_v1
+SET code = code || E'\n// @version 1.1'
+WHERE code NOT LIKE '%@version%'
+AND created_at > '2024-05-31T23:07:26+02:00'
+AND created_at < '2025-05-01T12:39:24+02:00'
+```
+
+4. verify
+
+we can verify that the edits worked by querying all patterns that contain the new version tag:
+
+```sql
+SELECT *
+FROM code_v1
+WHERE code LIKE '%@version 1.1%'
+AND created_at > '2024-05-31T23:07:26+02:00'
+AND created_at < '2025-05-01T12:39:24+02:00'
+ORDER BY created_at ASC;
+```
+
+
 ## Have Fun
 
 Remember to have fun, and that this project is driven by the passion of volunteers!

README.md

@@ -32,19 +32,13 @@ This project is organized into many [packages](./packages), which are also avail
 
 Read more about how to use these in your own project [here](https://strudel.cc/technical-manual/project-start).
 
-You will need to abide by the terms of the [GNU Affero Public Licence v3](LICENSE.md). As such, Strudel code can only be shared within free/open source projects under the same license -- see the license for details.
+You will need to abide by the terms of the [GNU Affero Public Licence v3](LICENSE). As such, Strudel code can only be shared within free/open source projects under the same license -- see the license for details.
 
 Licensing info for the default sound banks can be found over on the [dough-samples](https://github.com/felixroos/dough-samples/blob/main/README.md) repository.
 
 ## Contributing
 
-There are many ways to contribute to this project! See [contribution guide](./CONTRIBUTING.md).
-
-<a href="https://codeberg.org/uzu/strudel/activity/contributors">
-  <img src="https://contrib.rocks/image?repo=tidalcycles/strudel" />
-</a>
-
-Made with [contrib.rocks](https://contrib.rocks).
+There are many ways to contribute to this project! See [contribution guide](./CONTRIBUTING.md). You can find the full list of contributors [here](https://codeberg.org/uzu/strudel/activity/contributors).
 
 ## Community
 

docs/iclc2023-paper/demo-preprocessed.md

@@ -201,7 +201,7 @@ interfaces.
 
 The Strudel REPL is available at <https://strudel.cc>,
 including an interactive tutorial. The repository is at
-<https://github.com/tidalcycles/strudel>, all the code is open source
+<https://codeberg.org/uzu/strudel/releases>, all the code is open source
 under the GPL-3.0 License.
 
 # Acknowledgments

docs/iclc2023-paper/demo.md

@@ -128,7 +128,7 @@ For the future, it is planned to integrate alternative sound engines such as Gli
 # Links
 
 The Strudel REPL is available at <https://strudel.cc>, including an interactive tutorial.
-The repository is at <https://github.com/tidalcycles/strudel>, all the code is open source under the GPL-3.0 License.
+The repository is at <https://codeberg.org/uzu/strudel/releases>, all the code is open source under the GPL-3.0 License.
 
 # Acknowledgments
 

docs/iclc2023-paper/iclc2023.html

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+  <body>
+    <div id="header">
+      <h1 class="title">Strudel: live coding patterns on the Web</h1>
+      <ul id="authorlist">
+        <li>true</li>
+        <li>true</li>
+      </ul>
+      <h3 class="date">2022-12-14</h3>
+    </div>
+
+    <h2 class="abstract">Abstract</h2>
+    <div id="abstract">
+      <p>
+        This paper introduces Strudel, which brings the TidalCycles approach to live coding algorithmic patterns to
+        native JavaScript and the web. We begin by giving a little background of the first year of development, before
+        sharing some detail about its implementation and examples of use. We go on to outline the wide range of
+        synthesis and other outputs available in Strudel, including WebAudio, MIDI, OSC (for SuperDirt), WebSerial and
+        CSound, and introduce Strudel’s REPL live editor, including its built-in visualisations. We then compare Strudel
+        with Tidal, the trade-offs involved between JavaScript and Haskell, and the unique capabilities offered by
+        Strudel for aligning patterns.
+      </p>
+    </div>
+
+    <h1 data-number="1" id="introduction"><span class="header-section-number">1</span> Introduction</h1>
+    <p>
+      In the following paper, we introduce <em>Strudel</em>, an alternative implementation of the TidalCycles (or
+      ‘Tidal’ for short) live coding system, using the JavaScript programming language. Strudel is an attempt to make
+      live coding more accessible, by creating a system that runs entirely in the browser, while opening Tidal’s
+      approach to algorithmic patterns
+      <span class="citation" data-cites="mcleanAlgorithmicPattern2020a">(Mclean 2020)</span> up to modern audio/visual
+      web technologies. The Strudel REPL is a live code editor dedicated to manipulating patterns while they play, with
+      builtin visual feedback. While Strudel is written in JavaScript, the API is optimized for simplicity and
+      readability by applying code transformations on the syntax tree level, allowing language operations that would
+      otherwise be impossible. The application supports multiple ways to output sound, including Tone.js, Web Audio
+      Nodes, OSC (Open Sound Control) messages, Web Serial, Web MIDI and Csound. The project is split into multiple
+      packages, allowing granular reuse in other applications. Apart from TidalCycles, Strudel draws inspiration from
+      many prior existing projects like TidalVortex
+      <span class="citation" data-cites="mcleanTidalVortexZero2022">(McLean et al. 2022)</span>, Gibber
+      <span class="citation" data-cites="robertsGibberLiveCoding2012">(Roberts and Kuchera-morin 2012)</span>, Estuary
+      <span class="citation" data-cites="ogbornEstuaryBrowserbasedCollaborative2017">(Ogborn et al. 2017)</span>, Hydra
+      <span class="citation" data-cites="jackHydra2022">(Jack [2022] 2022)</span>, Ocarina
+      <span class="citation" data-cites="solomonPurescriptocarina2022">(Solomon [2021] 2022)</span> and Feedforward
+      <span class="citation" data-cites="mcleanFeedforward2020">(McLean 2020)</span>. This paper expands the Strudel
+      Demo paper for the Web Audio Conference 2022
+      <span class="citation" data-cites="StrudelWAC2022">(Roos and McLean 2022)</span>.
+    </p>
+    <p>
+      The first tentative commit to the Strudel project was on 22nd January 2022 by Alex McLean, with the core
+      representation implemented over the following few days. Although this was his first attempt at a JavaScript-based
+      application, by 27th January, Alex had managed to upload the initial version to the ‘npm’ javascript package
+      database, sharing with the wider community for comment. By 4th February, Felix Roos had discovered Strudel and
+      contributed a ‘REPL’ user interface to it, and then contributed a scheduler the next day, so that Strudel could
+      already make sound. At this point, Alex and Felix shared ownership to the repository, and the project has since
+      proved to be a productive confluence of Felix’s own work into music representation and visualisation, with Alex’s
+      experience with making Tidal. Felix has since become the primary contributor to Strudel, with Alex continuing to
+      jump between developing both Strudel and Tidal. Aspects of Strudel’s development have therefore fed back into
+      TidalCycles, and both systems have maintained a shared conceptual underpinning. We plan to continue working
+      towards feature parity between these systems, although within the syntactical trade-offs and library ecosystems of
+      JavaScript and Haskell, some divergence is inevitable and healthy.
+    </p>
+    <p>
+      Over the first year of its life, Strudel is now a fully-fledged live coding environment, porting Tidal’s core
+      represention of patterns, pattern transformations, and mininotation for polymetric sequences, combined with a
+      wealth of features for synthesising and visualising those patterns.
+    </p>
+    <h1 data-number="2" id="from-tidal-to-strudel-and-back">
+      <span class="header-section-number">2</span> From Tidal to Strudel and back
+    </h1>
+    <p>
+      As mentioned above, the original Tidal is implemented as a domain specific language (DSL) embedded in the Haskell
+      pure functional programming language, and takes advantage of Haskell’s terse syntax and advanced, ‘strong’ type
+      system. JavaScript on the other hand, is a multi-paradigm programming language, with a dynamic type system.
+      Because Tidal leans heavily on many of Haskell’s more unique features, it was not always clear that it could
+      meaningfully be ported to a multi-paradigm scripting language. However, this possibility was already demonstrated
+      with an earlier port to Python [TidalVortex;
+      <span class="citation" data-cites="mcleanTidalVortexZero2022">McLean et al. (2022)</span>], and we have now
+      successfully implemented Tidal’s pure functional representation of patterns in Strudel, including partial
+      application, currying, and the functor, applicative and monadic structures that underlie Tidal’s expressive
+      pattern transformations. The result is a terse and highly composable system, where everything is either a pattern,
+      or a function for combining and manipulating patterns, offering a rich creative ground for exploration.
+    </p>
+    <p>
+      This development process has been far from a one-way port, however. The process of porting Tidal’s concepts has
+      also opened up new possibilities, some just from revisiting every design decision, and some from the particular
+      affordances and constraints offered by JavaScript. This has lead to new features (and indeed bugfixes) that have
+      found their way back to Tidal where appropriate, and ongoing work that we will return to in the conclusion of this
+      paper.
+    </p>
+    <h1 data-number="3" id="representing-patterns">
+      <span class="header-section-number">3</span> Representing Patterns
+    </h1>
+    <p>
+      Patterns are the essence of Tidal. Its patterns are abstract entities that represent flows of time as functions,
+      adapting a technique called pure functional reactive programming. Taking a time span as its input, a Pattern can
+      output a set of events that happen within that time span. It depends on the structure of the Pattern how the
+      events are located in time. From now on, this process of generating events from a time span will be called
+      <strong>querying</strong>. Example:
+    </p>
+    <div class="sourceCode" id="cb1">
+      <pre
+        class="sourceCode js"
+      ><code class="sourceCode javascript"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a><span class="kw">const</span> pattern <span class="op">=</span> <span class="fu">sequence</span>(c3<span class="op">,</span> [e3<span class="op">,</span> g3])</span>
+<span id="cb1-2"><a href="#cb1-2" aria-hidden="true" tabindex="-1"></a><span class="kw">const</span> events <span class="op">=</span> pattern<span class="op">.</span><span class="fu">queryArc</span>(<span class="dv">0</span><span class="op">,</span> <span class="dv">1</span>)</span>
+<span id="cb1-3"><a href="#cb1-3" aria-hidden="true" tabindex="-1"></a><span class="bu">console</span><span class="op">.</span><span class="fu">log</span>(events<span class="op">.</span><span class="fu">map</span>(e <span class="kw">=&gt;</span> e<span class="op">.</span><span class="fu">show</span>()))</span></code></pre>
+    </div>
+    <p>
+      In this example, we create a pattern using the <code>sequence</code> function and <strong>query</strong> it for
+      the time span from <code>0</code> to <code>1</code>. Those numbers represent units of time called
+      <strong>cycles</strong>. The length of one cycle depends on the tempo, which defaults to one cycle per second. The
+      resulting events are:
+    </p>
+    <div class="sourceCode" id="cb2">
+      <pre
+        class="sourceCode js"
+      ><code class="sourceCode javascript"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a>[{ <span class="dt">value</span><span class="op">:</span> <span class="st">&#39;c3&#39;</span><span class="op">,</span> <span class="dt">begin</span><span class="op">:</span> <span class="dv">0</span><span class="op">,</span> <span class="dt">end</span><span class="op">:</span> <span class="dv">1</span><span class="op">/</span><span class="dv">2</span> }<span class="op">,</span></span>
+<span id="cb2-2"><a href="#cb2-2" aria-hidden="true" tabindex="-1"></a>{ <span class="dt">value</span><span class="op">:</span> <span class="st">&#39;e3&#39;</span><span class="op">,</span> <span class="dt">begin</span><span class="op">:</span> <span class="dv">1</span><span class="op">/</span><span class="dv">2</span><span class="op">,</span> <span class="dt">end</span><span class="op">:</span> <span class="dv">3</span><span class="op">/</span><span class="dv">4</span> }<span class="op">,</span></span>
+<span id="cb2-3"><a href="#cb2-3" aria-hidden="true" tabindex="-1"></a>{ <span class="dt">value</span><span class="op">:</span> <span class="st">&#39;g3&#39;</span><span class="op">,</span> <span class="dt">begin</span><span class="op">:</span> <span class="dv">3</span><span class="op">/</span><span class="dv">4</span><span class="op">,</span> <span class="dt">end</span><span class="op">:</span> <span class="dv">1</span> }]</span></code></pre>
+    </div>
+    <p>
+      Each event has a value, a begin time and an end time, where time is represented as a fraction. In the above case,
+      the events are placed in sequential order, where c3 takes the first half, and e3 and g3 together take the second
+      half. This temporal placement is the result of the <code>sequence</code> function, which divides its arguments
+      equally over one cycle. If an argument is an array, the same rule applies to that part of the cycle. In the
+      example, e3 and g3 are divided equally over the second half of the whole cycle.
+    </p>
+    <p>
+      The above examples do not represent how Strudel is used in practice. In the live coding editor, the user only has
+      to type in the pattern itself, the querying will be handled by the scheduler. The scheduler will repeatedly query
+      the pattern for events, which are then scheduled as sound synthesis or other event triggers. Also, the above event
+      data structure has been simplified for readability.
+    </p>
+    <figure>
+      <img
+        src="images/strudel-screenshot2.png"
+        style="width: 60%"
+        alt="Screenshot of the Strudel ‘REPL’ live coding editor, including piano-roll visualisation."
+      />
+      <figcaption aria-hidden="true">
+        Screenshot of the Strudel ‘REPL’ live coding editor, including piano-roll visualisation.
+      </figcaption>
+    </figure>
+    <h1 data-number="4" id="making-patterns"><span class="header-section-number">4</span> Making Patterns</h1>
+    <p>
+      In practice, the end-user live coder will not deal with constructing patterns directly, but will rather build
+      patterns using Strudel’s extensive combinator library to create, combine and transform patterns.
+    </p>
+    <p>
+      The live coder will rarely use the <code>sequence</code> function as seen above, as sequencing is implicit in many
+      functions. For example in the following, the <code>note</code> function constructs a pattern of notes, sequencing
+      its arguments in the same manner as the previous example.
+    </p>
+    <div class="sourceCode" id="cb3">
+      <pre
+        class="sourceCode js"
+      ><code class="sourceCode javascript"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a><span class="fu">note</span>(c3<span class="op">,</span> [e3<span class="op">,</span> g3])</span></code></pre>
+    </div>
+    <p>
+      Perhaps more often, they will use the mini-notation for even terser notation of rhythmic sequences: [^This last
+      example is also valid Tidal code, albeit the parenthesis is not required in its Haskell syntax in this case. Tidal
+      does not support passing sequences as lists directly to the <code>note</code> function, however.].
+    </p>
+    <div class="sourceCode" id="cb4">
+      <pre
+        class="sourceCode js"
+      ><code class="sourceCode javascript"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a><span class="fu">note</span>(<span class="st">&quot;c3 [e3 g3]&quot;</span>)</span></code></pre>
+    </div>
+    <p>
+      Such sequences are often treated only a starting point for manipulation, where they then undergo pattern
+      transformations such as repetition, symmetry, interference/combination or randomisation, potentially at multiple
+      timescales. Because Strudel patterns are represented as pure functions of time rather than as data structures,
+      very long and complex generative results can be represented and manipulated without having to store the resulting
+      sequences in memory.
+    </p>
+    <h1 data-number="5" id="pattern-example"><span class="header-section-number">5</span> Pattern Example</h1>
+    <p>
+      The following example showcases how patterns can be utilized to create musical complexity from simple parts, using
+      repetition and interference:
+    </p>
+    <div class="sourceCode" id="cb5">
+      <pre
+        class="sourceCode js"
+      ><code class="sourceCode javascript"><span id="cb5-1"><a href="#cb5-1" aria-hidden="true" tabindex="-1"></a><span class="st">&quot;&lt;0 2 [4 6](3,4,1) 3&gt;&quot;</span></span>
+<span id="cb5-2"><a href="#cb5-2" aria-hidden="true" tabindex="-1"></a><span class="op">.</span><span class="fu">off</span>(<span class="dv">1</span><span class="op">/</span><span class="dv">4</span><span class="op">,</span> <span class="fu">add</span>(<span class="dv">2</span>))</span>
+<span id="cb5-3"><a href="#cb5-3" aria-hidden="true" tabindex="-1"></a><span class="op">.</span><span class="fu">off</span>(<span class="dv">1</span><span class="op">/</span><span class="dv">2</span><span class="op">,</span> <span class="fu">add</span>(<span class="dv">6</span>))</span>
+<span id="cb5-4"><a href="#cb5-4" aria-hidden="true" tabindex="-1"></a><span class="op">.</span><span class="fu">scale</span>(<span class="st">&#39;D minor&#39;</span>)</span>
+<span id="cb5-5"><a href="#cb5-5" aria-hidden="true" tabindex="-1"></a><span class="op">.</span><span class="fu">legato</span>(<span class="op">.</span><span class="dv">25</span>)</span>
+<span id="cb5-6"><a href="#cb5-6" aria-hidden="true" tabindex="-1"></a><span class="op">.</span><span class="fu">note</span>()<span class="op">.</span><span class="fu">s</span>(<span class="st">&quot;sawtooth square&quot;</span>)</span>
+<span id="cb5-7"><a href="#cb5-7" aria-hidden="true" tabindex="-1"></a><span class="op">.</span><span class="fu">delay</span>(<span class="op">.</span><span class="dv">8</span>)<span class="op">.</span><span class="fu">delaytime</span>(<span class="op">.</span><span class="dv">125</span>)</span></code></pre>
+    </div>
+    <p>
+      The pattern starts with a rhythm of numbers in mini notation, which are later interpreted inside the scale of D
+      minor. The first line could also be expressed without mini notation:
+    </p>
+    <div class="sourceCode" id="cb6">
+      <pre
+        class="sourceCode js"
+      ><code class="sourceCode javascript"><span id="cb6-1"><a href="#cb6-1" aria-hidden="true" tabindex="-1"></a><span class="fu">cat</span>(<span class="dv">0</span><span class="op">,</span> <span class="dv">2</span><span class="op">,</span> [<span class="dv">4</span><span class="op">,</span> <span class="dv">6</span>]<span class="op">.</span><span class="fu">euclid</span>(<span class="dv">3</span><span class="op">,</span> <span class="dv">4</span><span class="op">,</span> <span class="dv">1</span>)<span class="op">,</span> <span class="dv">3</span>)</span></code></pre>
+    </div>
+    <p>
+      These numbers then undergo various pattern transformations. Here is a short description of all the functions used:
+    </p>
+    <ul>
+      <li><code>cat</code>: play elements sequentially, where each lasts one cycle</li>
+      <li><code>brackets</code>: elements inside brackets are divided equally over the time of their parent</li>
+      <li>
+        <code>.euclid(p, s, o)</code>: place p pulses evenly over s steps, with offset o
+        <span class="citation" data-cites="toussaintEuclideanAlgorithmGenerates2005">(Toussaint 2005)</span>
+      </li>
+      <li>
+        <code>.off(n, f)</code>: layers a pattern on top of itself, with the new layer offset by n cycles, and with
+        function f applied
+      </li>
+      <li><code>.legato(n)</code>: multiply the duration of all events in a pattern by a factor of n</li>
+      <li>
+        <code>.echo(t, n, v)</code>: copy each event t times, with n cycles in between each copy, decreasing velocity by
+        v
+      </li>
+      <li><code>.note()</code>: interpretes values as notes</li>
+      <li><code>.s(name)</code>: play back each event with the given sound</li>
+      <li><code>.delay(wet)</code>: add delay</li>
+      <li><code>.delaytime(t)</code>: set delay time</li>
+    </ul>
+    <p>Much of the above will be familiar to Tidal users.</p>
+    <!-- This example shows some of Strudel's unique support for chords and transposition familiar to students of Western music theory. This differs a little from Tidal's approach and thanks to the integration of the javascript library XXX (*TODO* ? or is this all your work Felix?), Strudel's support for tonal transformations such as voice leading is perhaps respects more advanced than Tidal. -->
+    <h1 data-number="6" id="ways-to-make-sound-and-other-events">
+      <span class="header-section-number">6</span> Ways to make Sound (and other events)
+    </h1>
+    <p>To generate sound, Strudel supports bindings for different outputs:</p>
+    <ul>
+      <li>Tone.js (deprecated)</li>
+      <li>Web Audio API</li>
+      <li>WebDirt, a js recreation of Tidal’s <em>Dirt</em> sample engine (deprecated)</li>
+      <li>OSC via osc-js, compatible with superdirt</li>
+      <li>Csound via the Csound WebAssembly build</li>
+      <li>MIDI via WebMIDI</li>
+      <li>Serial via WebSerial</li>
+    </ul>
+    <p>
+      At first, we used Tone.js as sound output, but it proved to be limited for the use case of Strudel, where each
+      individual event could potentially have a completely different audio graph. While the Web Audio API takes a
+      <em>fire-and-forget</em> approach, creating a lot of Tone.js instruments and effects causes performance issues
+      quickly. For that reason, we chose to search for alternatives.
+    </p>
+    <p>
+      Strudel’s new default output uses the Web Audio API to create a new audio graph for each event. It currently
+      supports basic oscillators, sample playback, various effects and an experimental support for soundfonts.
+    </p>
+    <p>
+      WebDirt <span class="citation" data-cites="ogbornDktr0WebDirt2022">(Ogborn [2016] 2022)</span> was created as part
+      of the Estuary Live Coding System
+      <span class="citation" data-cites="ogbornEstuaryBrowserbasedCollaborative2017">(Ogborn et al. 2017)</span>, and
+      proved to be a solid choice for handling samples in Strudel as well. We are however focused on working more
+      directly with the Web Audio API to be able to integrate new features more tightly.
+    </p>
+    <p>
+      Using the OSC protocol via Strudel’s provided Node.js-based OSC proxy server, it is possible to send network
+      messages to trigger events. This is mainly used to render sound using SuperDirt
+      <span class="citation" data-cites="SuperDirt2022">(<em>SuperDirt</em> [2015] 2022)</span>, which is the
+      well-developed Supercollider-based synthesis framework that Tidal live coders generally use as standard.
+    </p>
+    <p>
+      Recently, the experimental integration of Csound proved to bring a new dimension of sound design capabilities to
+      Strudel. Thanks to the WebAssembly distribution of this classic system
+      <span class="citation" data-cites="CsoundWebAssembly">(Yi, Lazzarini, and Costello 2018)</span>, Csound
+      ‘orchestra’ synthesisers can be embedded in and then patterned with Strudel code.
+    </p>
+    <p>
+      MIDI output can also be used to send MIDI messages to either external instruments or to other programs on the same
+      device. Unlike OSC, Strudel is able to send MIDI directly without requiring additional proxy software, but only
+      from web browsers that support it (at the time of writing, this means Chromium-based browsers).
+    </p>
+    <p>
+      Finally, Strudel supports Serial output, for example to trigger events via microcontrollers. This has already been
+      explored for robot choreography by Kate Sicchio and Alex McLean, via a performance presented at the International
+      Conference on Live Interfaces 2022.
+    </p>
+    <h1 data-number="7" id="the-strudel-repl"><span class="header-section-number">7</span> The Strudel REPL</h1>
+    <p>
+      While Strudel can be used as a library in any JavaScript codebase, its main, reference user interface is the
+      Strudel REPL[^REPL stands for read, evaluate, print/play, loop. It is friendly jargon for an interactive
+      programming interface from computing heritage, usually for a commandline interface but also applied to live coding
+      editors.], which is a browser-based live coding environment. This live code editor is dedicated to manipulating
+      Strudel patterns while they play. The REPL features built-in visual feedback, which highlights which elements in
+      the patterned (mini-notation) sequences are influencing the event that is currently being played. This feedback is
+      designed to support both learning and live use of Strudel.
+    </p>
+    <p>
+      Besides a UI for playback control and meta information, the main part of the REPL interface is the code editor
+      powered by CodeMirror. In it, the user can edit and evaluate pattern code live, using one of the available
+      synthesis outputs to create music and/or sound art. The control flow of the REPL follows 3 basic steps:
+    </p>
+    <ol type="1">
+      <li>
+        The user writes and updates code. Each update transpiles and evaluates it to create a
+        <code>Pattern</code> instance
+      </li>
+      <li>
+        While the REPL is running, the <code>Scheduler</code> queries the active <code>Pattern</code> by a regular
+        interval, generating <code>Events</code> (also known as <code>Haps</code> in Strudel) for the next time span.
+      </li>
+      <li>
+        For each scheduling tick, all generated <code>Events</code> are triggered by calling their
+        <code>onTrigger</code> method, which is set by the output.
+      </li>
+    </ol>
+    <figure>
+      <img
+        src="https://github.com/tidalcycles/strudel/raw/talk/talk/public/strudelflow.png?raw=true"
+        style="width: 43%"
+        alt="REPL control flow"
+      />
+      <figcaption aria-hidden="true">REPL control flow</figcaption>
+    </figure>
+    <h2 data-number="7.1" id="user-code"><span class="header-section-number">7.1</span> User Code</h2>
+    <p>To create a <code>Pattern</code> from the user code, two steps are needed:</p>
+    <ol type="1">
+      <li>Transpile the JS input code to make it functional</li>
+      <li>Evaluate the transpiled code</li>
+    </ol>
+    <h3 data-number="7.1.1" id="transpilation-evaluation">
+      <span class="header-section-number">7.1.1</span> Transpilation &amp; Evaluation
+    </h3>
+    <p>
+      In the JavaScript world, using transpilation is a common practise to be able to use language features that are not
+      supported by the base language. Tools like <code>babel</code> will transpile code that contains unsupported
+      language features into a version of the code without those features.
+    </p>
+    <p>
+      In the same tradition, Strudel can add a transpilation step to simplify the user code in the context of live
+      coding. For example, the Strudel REPL lets the user create mini notation patterns using just double quoted
+      strings, while single quoted strings remain what they are:
+    </p>
+    <div class="sourceCode" id="cb7">
+      <pre
+        class="sourceCode js"
+      ><code class="sourceCode javascript"><span id="cb7-1"><a href="#cb7-1" aria-hidden="true" tabindex="-1"></a><span class="st">&quot;c3 [e3 g3]*2&quot;</span></span></code></pre>
+    </div>
+    <p>is transpiled to:</p>
+    <div class="sourceCode" id="cb8">
+      <pre
+        class="sourceCode js"
+      ><code class="sourceCode javascript"><span id="cb8-1"><a href="#cb8-1" aria-hidden="true" tabindex="-1"></a><span class="fu">mini</span>(<span class="st">&quot;c3 [e3 g3]*2&quot;</span>)<span class="op">.</span><span class="fu">withMiniLocation</span>([<span class="dv">1</span><span class="op">,</span><span class="dv">0</span><span class="op">,</span><span class="dv">0</span>]<span class="op">,</span>[<span class="dv">1</span><span class="op">,</span><span class="dv">14</span><span class="op">,</span><span class="dv">14</span>])</span></code></pre>
+    </div>
+    <p>
+      Here, the string is wrapped in <code>mini</code>, which will create a pattern from a mini notation string.
+      Additionally, the <code>withMiniLocation</code> method passes the original source code location of the string to
+      the pattern, which enables highlighting active events.
+    </p>
+    <p>
+      Other convenient features like pseudo variables, operator overloading and top level await are possible with
+      transpilation.
+    </p>
+    <p>After the transpilation, the code is ready to be evaluated into a <code>Pattern</code>.</p>
+    <p>
+      Behind the scenes, the user code string is parsed with <code>acorn</code>, turning it into an Abstract Syntax Tree
+      (AST). The AST allows changing the structure of the code before generating the transpiled version using
+      <code>escodegen</code>.
+    </p>
+    <h3 data-number="7.1.2" id="mini-notation"><span class="header-section-number">7.1.2</span> Mini Notation</h3>
+    <p>
+      While the transpilation allows JavaScript to express Patterns in a less verbose way, it is still preferable to use
+      the Mini Notation as a more compact way to express rhythm. Strudel aims to provide the same Mini Notation features
+      and syntax as used in Tidal.
+    </p>
+    <p>
+      The Mini Notation parser is implemented using <code>peggy</code>, which allows generating performant parsers for
+      Domain Specific Languages (DSLs) using a concise grammar notation. The generated parser turns the Mini Notation
+      string into an AST which is used to call the respective Strudel functions with the given structure. For example,
+      <code>"c3 [e3 g3]*2"</code> will result in the following calls:
+    </p>
+    <div class="sourceCode" id="cb9">
+      <pre
+        class="sourceCode js"
+      ><code class="sourceCode javascript"><span id="cb9-1"><a href="#cb9-1" aria-hidden="true" tabindex="-1"></a><span class="fu">seq</span>(</span>
+<span id="cb9-2"><a href="#cb9-2" aria-hidden="true" tabindex="-1"></a>  <span class="fu">reify</span>(<span class="st">&#39;c3&#39;</span>)<span class="op">.</span><span class="fu">withLocation</span>([<span class="dv">1</span><span class="op">,</span><span class="dv">1</span><span class="op">,</span><span class="dv">1</span>]<span class="op">,</span> [<span class="dv">1</span><span class="op">,</span><span class="dv">4</span><span class="op">,</span><span class="dv">4</span>])<span class="op">,</span></span>
+<span id="cb9-3"><a href="#cb9-3" aria-hidden="true" tabindex="-1"></a>  <span class="fu">seq</span>(</span>
+<span id="cb9-4"><a href="#cb9-4" aria-hidden="true" tabindex="-1"></a>    <span class="fu">reify</span>(<span class="st">&#39;e3&#39;</span>)<span class="op">.</span><span class="fu">withLocation</span>([<span class="dv">1</span><span class="op">,</span><span class="dv">5</span><span class="op">,</span><span class="dv">5</span>]<span class="op">,</span> [<span class="dv">1</span><span class="op">,</span><span class="dv">8</span><span class="op">,</span><span class="dv">8</span>])<span class="op">,</span></span>
+<span id="cb9-5"><a href="#cb9-5" aria-hidden="true" tabindex="-1"></a>    <span class="fu">reify</span>(<span class="st">&#39;g3&#39;</span>)<span class="op">.</span><span class="fu">withLocation</span>([<span class="dv">1</span><span class="op">,</span><span class="dv">8</span><span class="op">,</span><span class="dv">8</span>]<span class="op">,</span> [<span class="dv">1</span><span class="op">,</span><span class="dv">10</span><span class="op">,</span><span class="dv">10</span>])<span class="op">,</span></span>
+<span id="cb9-6"><a href="#cb9-6" aria-hidden="true" tabindex="-1"></a>  )<span class="op">.</span><span class="fu">fast</span>(<span class="dv">2</span>)</span>
+<span id="cb9-7"><a href="#cb9-7" aria-hidden="true" tabindex="-1"></a>)</span></code></pre>
+    </div>
+    <h3 data-number="7.1.3" id="highlighting-locations">
+      <span class="header-section-number">7.1.3</span> Highlighting Locations
+    </h3>
+    <p>
+      As seen in the examples above, both the JS and the Mini Notation parser add source code locations using
+      <code>withMiniLocation</code> and <code>withLocation</code> methods. While the JS parser adds locations relative
+      to the user code as a whole, the Mini Notation adds locations relative to the position of the mini notation
+      string. The absolute location of elements within Mini Notation can be calculated by simply adding both locations
+      together. This absolute location can be used to highlight active events in real time.
+    </p>
+    <h2 data-number="7.2" id="scheduling-events"><span class="header-section-number">7.2</span> Scheduling Events</h2>
+    <p>
+      After an instance of <code>Pattern</code> is obtained from the user code, it is used by the scheduler to get
+      queried for events. Once started, the scheduler runs at a fixed interval to query active pattern for events
+      withing the current interval’s time span. A simplified implementation looks like this:
+    </p>
+    <div class="sourceCode" id="cb10">
+      <pre
+        class="sourceCode js"
+      ><code class="sourceCode javascript"><span id="cb10-1"><a href="#cb10-1" aria-hidden="true" tabindex="-1"></a><span class="kw">let</span> pattern <span class="op">=</span> <span class="fu">seq</span>(<span class="st">&#39;c3&#39;</span><span class="op">,</span> [<span class="st">&#39;e3&#39;</span><span class="op">,</span> <span class="st">&#39;g3&#39;</span>])<span class="op">;</span> <span class="co">// pattern from user</span></span>
+<span id="cb10-2"><a href="#cb10-2" aria-hidden="true" tabindex="-1"></a><span class="kw">let</span> interval <span class="op">=</span> <span class="fl">0.5</span><span class="op">;</span> <span class="co">// query interval in seconds</span></span>
+<span id="cb10-3"><a href="#cb10-3" aria-hidden="true" tabindex="-1"></a><span class="kw">let</span> time <span class="op">=</span> <span class="dv">0</span><span class="op">;</span> <span class="co">// beginning of current time span</span></span>
+<span id="cb10-4"><a href="#cb10-4" aria-hidden="true" tabindex="-1"></a><span class="kw">let</span> minLatency <span class="op">=</span> <span class="op">.</span><span class="dv">1</span><span class="op">;</span> <span class="co">// min time before a hap should trigger</span></span>
+<span id="cb10-5"><a href="#cb10-5" aria-hidden="true" tabindex="-1"></a><span class="pp">setInterval</span>(() <span class="kw">=&gt;</span> {</span>
+<span id="cb10-6"><a href="#cb10-6" aria-hidden="true" tabindex="-1"></a>  <span class="kw">const</span> haps <span class="op">=</span> pattern<span class="op">.</span><span class="fu">queryArc</span>(time<span class="op">,</span> time <span class="op">+</span> interval)<span class="op">;</span></span>
+<span id="cb10-7"><a href="#cb10-7" aria-hidden="true" tabindex="-1"></a>  time <span class="op">+=</span> interval<span class="op">;</span> <span class="co">// increment time</span></span>
+<span id="cb10-8"><a href="#cb10-8" aria-hidden="true" tabindex="-1"></a>  haps<span class="op">.</span><span class="fu">forEach</span>((hap) <span class="kw">=&gt;</span> {</span>
+<span id="cb10-9"><a href="#cb10-9" aria-hidden="true" tabindex="-1"></a>    <span class="kw">const</span> deadline <span class="op">=</span> hap<span class="op">.</span><span class="at">whole</span><span class="op">.</span><span class="at">begin</span> <span class="op">-</span> time <span class="op">+</span> minLatency<span class="op">;</span></span>
+<span id="cb10-10"><a href="#cb10-10" aria-hidden="true" tabindex="-1"></a>    <span class="fu">onTrigger</span>(hap<span class="op">,</span> deadline<span class="op">,</span> duration)<span class="op">;</span></span>
+<span id="cb10-11"><a href="#cb10-11" aria-hidden="true" tabindex="-1"></a>  })<span class="op">;</span></span>
+<span id="cb10-12"><a href="#cb10-12" aria-hidden="true" tabindex="-1"></a>}<span class="op">,</span> interval <span class="op">*</span> <span class="dv">1000</span>)<span class="op">;</span> <span class="co">// query each &quot;interval&quot; seconds</span></span></code></pre>
+    </div>
+    <p>
+      Note that the above code is simplified for illustrative purposes. The actual implementation has to work around
+      imprecise callbacks of <code>setInterval</code>. More about the implementation details can be read in
+      <a href="https://loophole-letters.vercel.app/web-audio-scheduling">this blog post</a>.
+    </p>
+    <p>
+      The fact that <code>Pattern.queryArc</code> is a pure function that maps a time span to a set of events allows us
+      to choose any interval we like without changing the resulting output. It also means that when the pattern is
+      changed from outside, the next scheduling callback will work with the new pattern, keeping its clock running.
+    </p>
+    <p>
+      The latency between the time the pattern is evaluated and the change is heard is between
+      <code>minLatency</code> and <code>interval + minLatency</code>, in our example between 100ms and 600ms. In
+      Strudel, the current query interval is 50ms with a minLatency of 100ms, meaning the latency is between 50ms and
+      150ms.
+    </p>
+    <h2 data-number="7.3" id="output"><span class="header-section-number">7.3</span> Output</h2>
+    <p>
+      The last step is to trigger each event in the chosen output. This is where the given time and value of each event
+      is used to generate audio or any other form of time based output. The default output of the Strudel REPL is the
+      WebAudio output. To understand what an output does, we first have to understand what control parameters are.
+    </p>
+    <h3 data-number="7.3.1" id="control-parameters">
+      <span class="header-section-number">7.3.1</span> Control Parameters
+    </h3>
+    <p>
+      To be able to manipulate multiple aspects of sound in parallel, so called control parameters are used to shape the
+      value of each event. Example:
+    </p>
+    <div class="sourceCode" id="cb11">
+      <pre
+        class="sourceCode js"
+      ><code class="sourceCode javascript"><span id="cb11-1"><a href="#cb11-1" aria-hidden="true" tabindex="-1"></a><span class="fu">note</span>(<span class="st">&quot;c3 e3&quot;</span>)<span class="op">.</span><span class="fu">cutoff</span>(<span class="dv">1000</span>)<span class="op">.</span><span class="fu">s</span>(<span class="st">&#39;sawtooth&#39;</span>)</span>
+<span id="cb11-2"><a href="#cb11-2" aria-hidden="true" tabindex="-1"></a>  <span class="op">.</span><span class="fu">queryArc</span>(<span class="dv">0</span><span class="op">,</span> <span class="dv">1</span>)<span class="op">.</span><span class="fu">map</span>(hap <span class="kw">=&gt;</span> hap<span class="op">.</span><span class="at">value</span>)</span>
+<span id="cb11-3"><a href="#cb11-3" aria-hidden="true" tabindex="-1"></a><span class="co">/* [</span></span>
+<span id="cb11-4"><a href="#cb11-4" aria-hidden="true" tabindex="-1"></a><span class="co">  { note: &#39;c3&#39;, cutoff: 1000, s: &#39;sawtooth&#39; }</span></span>
+<span id="cb11-5"><a href="#cb11-5" aria-hidden="true" tabindex="-1"></a><span class="co">  { note: &#39;e3&#39;, cutoff: 1000, s: &#39;sawtooth&#39; }</span></span>
+<span id="cb11-6"><a href="#cb11-6" aria-hidden="true" tabindex="-1"></a><span class="co">] */</span></span></code></pre>
+    </div>
+    <p>
+      Here, the control parameter functions <code>note</code>, <code>cutoff</code> and <code>s</code> are used, where
+      each controls a different property in the value object. Each control parameter function accepts a primitive value,
+      a list of values to be sequenced into a <code>Pattern</code>, or a <code>Pattern</code>. In the example,
+      <code>note</code> gets a <code>Pattern</code> from a Mini Notation expression (double quoted), while
+      <code>cutoff</code> and <code>s</code> are given a <code>Number</code> and a (single quoted)
+      <code>String</code> respectively.
+    </p>
+    <p>
+      Strudel comes with a large default set of control parameter functions that are based on the ones used by Tidal and
+      SuperDirt, focusing on music and audio terminology. It is however possible to create custom control paramters for
+      any purpose:
+    </p>
+    <div class="sourceCode" id="cb12">
+      <pre
+        class="sourceCode js"
+      ><code class="sourceCode javascript"><span id="cb12-1"><a href="#cb12-1" aria-hidden="true" tabindex="-1"></a><span class="kw">const</span> { x<span class="op">,</span> y } <span class="op">=</span> <span class="fu">createParams</span>(<span class="st">&#39;x&#39;</span><span class="op">,</span> <span class="st">&#39;y&#39;</span>)</span>
+<span id="cb12-2"><a href="#cb12-2" aria-hidden="true" tabindex="-1"></a><span class="fu">x</span>(sine<span class="op">.</span><span class="fu">range</span>(<span class="dv">0</span><span class="op">,</span> <span class="dv">200</span>))<span class="op">.</span><span class="fu">y</span>(cosine<span class="op">.</span><span class="fu">range</span>(<span class="dv">0</span><span class="op">,</span><span class="dv">200</span>))</span></code></pre>
+    </div>
+    <p>
+      This example creates the custom control parameters <code>x</code> and <code>y</code> which are then used to form a
+      pattern that descibes the coordinates of a circle.
+    </p>
+    <h3 data-number="7.3.2" id="outputs"><span class="header-section-number">7.3.2</span> Outputs</h3>
+    <p>
+      Now that we know how the value of an event is manipulated using control parameters, we can look at how outputs can
+      use that value to generate anything. The scheduler above was calling the <code>onTrigger</code> function which is
+      used to implement the output. A very simple version of the web audio output could look like this:
+    </p>
+    <div class="sourceCode" id="cb13">
+      <pre
+        class="sourceCode js"
+      ><code class="sourceCode javascript"><span id="cb13-1"><a href="#cb13-1" aria-hidden="true" tabindex="-1"></a><span class="kw">function</span> <span class="fu">onTrigger</span>(hap<span class="op">,</span> deadline<span class="op">,</span> duration) {</span>
+<span id="cb13-2"><a href="#cb13-2" aria-hidden="true" tabindex="-1"></a>  <span class="kw">const</span> { note } <span class="op">=</span> hap<span class="op">.</span><span class="at">value</span><span class="op">;</span></span>
+<span id="cb13-3"><a href="#cb13-3" aria-hidden="true" tabindex="-1"></a>  <span class="kw">const</span> time <span class="op">=</span> <span class="fu">getAudioContext</span>()<span class="op">.</span><span class="at">currentTime</span> <span class="op">+</span> deadline<span class="op">;</span></span>
+<span id="cb13-4"><a href="#cb13-4" aria-hidden="true" tabindex="-1"></a>  <span class="kw">const</span> o <span class="op">=</span> <span class="fu">getAudioContext</span>()<span class="op">.</span><span class="fu">createOscillator</span>()<span class="op">;</span></span>
+<span id="cb13-5"><a href="#cb13-5" aria-hidden="true" tabindex="-1"></a>  o<span class="op">.</span><span class="at">frequency</span><span class="op">.</span><span class="at">value</span> <span class="op">=</span> <span class="fu">getFreq</span>(note)<span class="op">;</span></span>
+<span id="cb13-6"><a href="#cb13-6" aria-hidden="true" tabindex="-1"></a>  o<span class="op">.</span><span class="fu">start</span>(time)<span class="op">;</span></span>
+<span id="cb13-7"><a href="#cb13-7" aria-hidden="true" tabindex="-1"></a>  o<span class="op">.</span><span class="fu">stop</span>(time <span class="op">+</span> <span class="bu">event</span><span class="op">.</span><span class="at">duration</span>)<span class="op">;</span></span>
+<span id="cb13-8"><a href="#cb13-8" aria-hidden="true" tabindex="-1"></a>  o<span class="op">.</span><span class="fu">connect</span>(<span class="fu">getAudioContext</span>()<span class="op">.</span><span class="at">destination</span>)<span class="op">;</span></span>
+<span id="cb13-9"><a href="#cb13-9" aria-hidden="true" tabindex="-1"></a>}</span></code></pre>
+    </div>
+    <p>
+      The above example will create an <code>OscillatorNode</code> for each event, where the frequency is controlled by
+      the <code>note</code> param. In essence, this is how the WebAudio API output of Strudel works, only with many more
+      parameters to control synths, samples and effects.
+    </p>
+    <h1 data-number="8" id="pattern-alignment-and-combination">
+      <span class="header-section-number">8</span> Pattern alignment and combination
+    </h1>
+    <p>
+      One core aspect of Strudel, inherited from Tidal, is the flexible way that patterns can be combined, irrespective
+      of their structure. Its declarative approach means a live coder does not have to think about the details of
+      <em>how</em> this is done, only <em>what</em> is to be done.
+    </p>
+    <p>
+      As a simple example, consider two number patterns <code>"0 [1 2] 3"</code>, and <code>"10 20"</code>. The first
+      has three contiguous steps of equal lengths, with the second step broken down into two substeps, giving four
+      events in total. There are a very large number of ways in which the structure of these two patterns could be
+      combined, but the default method in both Strudel and Tidal is to line up the cycles of the two patterns, and then
+      take events from the first pattern and match them with those in the second pattern. Therefore, the following two
+      lines are equivalent:
+    </p>
+    <div class="sourceCode" id="cb14">
+      <pre
+        class="sourceCode js"
+      ><code class="sourceCode javascript"><span id="cb14-1"><a href="#cb14-1" aria-hidden="true" tabindex="-1"></a><span class="st">&quot;0 [1 2] 3&quot;</span><span class="op">.</span><span class="fu">add</span>(<span class="st">&quot;10 20&quot;</span>)</span>
+<span id="cb14-2"><a href="#cb14-2" aria-hidden="true" tabindex="-1"></a><span class="st">&quot;10 [11 22] 23&quot;</span></span></code></pre>
+    </div>
+    <p>
+      Where the events only partially overlap, they are treated as fragments of the event in the first pattern. This is
+      a little difficult to conceptualise, but lets start by comparing the two patterns in the following example:
+    </p>
+    <div class="sourceCode" id="cb15">
+      <pre
+        class="sourceCode js"
+      ><code class="sourceCode javascript"><span id="cb15-1"><a href="#cb15-1" aria-hidden="true" tabindex="-1"></a><span class="st">&quot;0 1 2&quot;</span><span class="op">.</span><span class="fu">add</span>(<span class="st">&quot;10 20&quot;</span>)</span>
+<span id="cb15-2"><a href="#cb15-2" aria-hidden="true" tabindex="-1"></a><span class="st">&quot;10 [11 21] 20&quot;</span></span></code></pre>
+    </div>
+    <p>
+      They are similar to the previous example in that the number <code>1</code> is split in two, with its two halves
+      added to <code>10</code> and <code>20</code> respectively. However, the <code>11</code> ‘remembers’ that it is a
+      fragment of that original <code>1</code> event, and so is treated as having a duration of a third of a cycle,
+      despite only being active for a sixth of a cycle. Likewise, the <code>21</code> is also a fragment of that
+      original <code>1</code> event, but a fragment of its second half. Because the start of its event is missing, it
+      wouldn’t actually trigger a sound (unless it underwent further pattern transformations/combinations).
+    </p>
+    <p>
+      In practice, the effect of this default, implicit method for combining two patterns is that the second pattern is
+      added <em>in</em> to the first one, and indeed this can be made explicit:
+    </p>
+    <div class="sourceCode" id="cb16">
+      <pre
+        class="sourceCode js"
+      ><code class="sourceCode javascript"><span id="cb16-1"><a href="#cb16-1" aria-hidden="true" tabindex="-1"></a><span class="st">&quot;0 1 2&quot;</span><span class="op">.</span><span class="at">add</span><span class="op">.</span><span class="fu">in</span>(<span class="st">&quot;10 20&quot;</span>)</span></code></pre>
+    </div>
+    <p>This makes way for other ways to align the pattern, and several are already defined, in particular:</p>
+    <ul>
+      <li>
+        <code>in</code> - as explained above, aligns cycles, and applies values from the pattern on the right
+        <em>in</em> to the pattern on the left.
+      </li>
+      <li>
+        <code>out</code> - as with <code>in</code>, but values are applied <em>out</em> of the pattern on the left
+        (i.e. <em>in</em> to the one on the right).
+      </li>
+      <li>
+        <code>mix</code> - structures from both patterns are combined, so that the new events are not fragments but are
+        created at intersections of events from both sides.
+      </li>
+      <li>
+        <code>squeeze</code> - cycles from the pattern on the right are squeezed into events on the left. So that
+        e.g. <code>"0 1 2".add.squeeze("10 20")</code> is equivalent to <code>"[10 20] [11 21] [12 22]"</code>.
+      </li>
+      <li>
+        <code>squeezeout</code> - as with <code>squeeze</code>, but cycles from the left are squeezed into events on the
+        right. So, <code>"0 1 2".add.squeezeout("10 20")</code> is equivalent to <code>[10 11 12] [20 21 22]</code>.
+      </li>
+      <li>
+        <code>trig</code> is similar to <code>squeezeout</code> in that cycles from the right are aligned with events on
+        the left. However those cycles are not ‘squeezed’, rather they are truncated to fit the event. So
+        <code>"0 1 2 3 4 5 6 7".add.trig("10 [20 30]")</code> would be equivalent to
+        <code>10 11 12 13 20 21 30 31</code>. In effect, events on the right ‘trigger’ cycles on the left.
+      </li>
+      <li>
+        <code>trigzero</code> is similar to <code>trig</code>, but the pattern is ‘triggered’ from its very first cycle,
+        rather than from the current cycle. <code>trig</code> and <code>trigzero</code> therefore only give different
+        results where the leftmost pattern differs from one cycle to the next.
+      </li>
+    </ul>
+    <p>
+      We will save going deeper into the background, design and practicalities of these alignment functions for future
+      publications. However in the next section, we take them as a case study for looking at the different design
+      affordances offered by Haskell to Tidal, and JavaScript to Strudel.
+    </p>
+    <h1 data-number="9" id="comparing-strudel-and-haskell-in-use">
+      <span class="header-section-number">9</span> Comparing Strudel and Haskell in use
+    </h1>
+    <p>
+      Unlike Haskell, JavaScript lacks the ability to define custom infix operators, or change the meaning of existing
+      ones. So the above Strudel example of <code>"0 1 2".add.out("10 20")</code> is equivalent to the Tidal expression
+      <code>"0 1 2" +| "10 20"</code>, where the vertical bar in the operator <code>+|</code> stands for
+      <code>out</code> (where <code>a |+ b</code> would be equivalent of <code>a.add.in(b)</code>).
+    </p>
+    <p>
+      From this we can already see that Tidal tends towards brevity through mixing infix operators with functions, and
+      Strudel tends towards spelling out operations which are joined together with the <code>.</code> operator. This
+      then is the design trade-off of Tidal’s tersity, versus Strudel’s simplicity.
+    </p>
+    <p>To demonstrate this, consider the following Tidal pattern:</p>
+    <pre
+      class="tidal"
+    ><code>iter 4 $ every 3 (||+ n &quot;10 20&quot;) $ (n &quot;0 1 3&quot;) # s &quot;triangle&quot; # crush 4</code></pre>
+    <p>This can be directly translated to the Strudel equivalent:</p>
+    <div class="sourceCode" id="cb18">
+      <pre
+        class="sourceCode js"
+      ><code class="sourceCode javascript"><span id="cb18-1"><a href="#cb18-1" aria-hidden="true" tabindex="-1"></a><span class="fu">iter</span>(<span class="dv">4</span><span class="op">,</span> <span class="fu">every</span>(<span class="dv">3</span><span class="op">,</span> add<span class="op">.</span><span class="fu">squeeze</span>(<span class="st">&quot;10 20&quot;</span>)<span class="op">,</span> <span class="fu">n</span>(<span class="st">&quot;0 1 3&quot;</span>)<span class="op">.</span><span class="fu">s</span>(<span class="st">&quot;triangle&quot;</span>)<span class="op">.</span><span class="fu">crush</span>(<span class="dv">4</span>)))</span></code></pre>
+    </div>
+    <p>Although for a more canonical Strudel expression, we would reorder it as:</p>
+    <div class="sourceCode" id="cb19">
+      <pre
+        class="sourceCode js"
+      ><code class="sourceCode javascript"><span id="cb19-1"><a href="#cb19-1" aria-hidden="true" tabindex="-1"></a><span class="fu">n</span>(<span class="st">&quot;0 1 3&quot;</span>)<span class="op">.</span><span class="fu">every</span>(<span class="dv">3</span><span class="op">,</span> add<span class="op">.</span><span class="fu">squeeze</span>(<span class="st">&quot;10 20&quot;</span>))<span class="op">.</span><span class="fu">iter</span>(<span class="dv">4</span>)<span class="op">.</span><span class="fu">s</span>(<span class="st">&quot;triangle&quot;</span>)<span class="op">.</span><span class="fu">crush</span>(<span class="dv">4</span>)</span></code></pre>
+    </div>
+    <p>
+      The Strudel example uses the <code>.</code> method call operator for all operations and combinations, whereas the
+      Tidal example has <code>#</code> for the default method for combining patterns and uses infix operators for other
+      methods. The lack of parenthesis in the Tidal example is partly due to the way that arguments are applied to
+      Haskell’s functions, and partly due to the use of the <code>$</code> operator as an alternative way to establish
+      precedence and control the order of evaluation.
+    </p>
+    <p>
+      Considering the above, we argue that the Haskell syntax is a little cleaner, but that the Strudel syntax is easier
+      to learn. Our informal observation is that while Haskell’s dollar <code>$</code> operator is very useful in making
+      code easier to work with, it is one of the most difficult aspects of Tidal use for beginners to learn. On the
+      other hand, the deeper levels of parenthesis in Strudel code can be difficult to keep track of, especially while
+      coding under pressure of live musical performance. However this difficulty can be largely be mitigated by
+      reordering expressions, and further mitigated by supporting editor features.
+    </p>
+    <p>
+      With Strudel, we have little choice but to embrace the affordances and constraints offered by JavaScript, and
+      while designing a domain-specific language entirely based on method calls is a challenge, through creative
+      adoption of functional programming techniques like partial application, we are so far very happy with the results.
+      Tidal’s functional reactive approach to pattern-making has in general translated well to JavaScript, and
+      opportunities and constraints have overall traded off to create a very approachable and useable live coding
+      environment.
+    </p>
+    <h2 data-number="9.1" id="the-trade-off-of-flexible-typing">
+      <span class="header-section-number">9.1</span> The trade-off of flexible typing
+    </h2>
+    <p>
+      We have identified one problem with porting Tidal to JavaScript where we have missed Haskell’s strict typing and
+      type inference. In both Tidal and Strudel, time is rational, where any point in time is represented as the ratio
+      of two integers. This allows representation of musical ratios such that are impossible to represent accurately
+      using the more common floating point numbers. However while libraries are available that support rational numbers
+      in JavaScript, the lack of strict typing means that it is easy to implement pattern methods where computationally
+      expensive conversion from floating point to rational numbers are performed late, and therefore often enough to
+      overload the CPUs, due to the large number of iterative calculations required to estimate a ratio for a given
+      floating point number. To mitigate this problem, we might consider moving to TypeScript in the future.
+    </p>
+    <h1 data-number="10" id="future-outlook"><span class="header-section-number">10</span> Future Outlook</h1>
+    <p>
+      The project is still young, with many features on the horizon. As general guiding principles, Strudel aims to be
+    </p>
+    <ol type="1">
+      <li>accessible</li>
+      <li>consistent with Tidal’s approach to pattern</li>
+      <li>modular and extensible</li>
+    </ol>
+    <p>
+      While Haskell’s type system makes it a great language for the ongoing development of Tidal’s inner representation
+      of pattern, JavaScript’s vibrant ecosystem, flexibility and accessibility makes it a great host for more ad-hoc
+      experiments, including interface design. For the future, it is planned to integrate additional alternative sound
+      engines such as Glicol <span class="citation" data-cites="lanChaosprintGlicol2022">(Lan [2020] 2022)</span> and
+      Faust
+      <span class="citation" data-cites="FaustProgrammingLanguage2022"
+        >(<em>Faust - Programming Language for Audio Applications and Plugins</em> [2016] 2022)</span
+      >. Strudel is already approaching feature parity with Tidal, but there are more Tidal functions to be ported, and
+      work to be done to improve compatibility with Tidal’s mininotation. Tidal version 2.0 is under development, which
+      brings a new representation for sequences to its patterns, which will then be brought to Strudel. Besides sound,
+      other ways to render events are being explored, such as graphical, and choreographic output. We are also looking
+      into alternative ways of editing patterns, including multi-user editing for network music, parsing a novel syntax
+      to escape the constraints of javascript, and developing hardware/e-textile interfaces. In summary, there is a lot
+      of fun ahead.
+    </p>
+    <h1 data-number="11" id="links"><span class="header-section-number">11</span> Links</h1>
+    <p>
+      The Strudel REPL is available at <a href="https://strudel.cc" class="uri">https://strudel.cc</a>, including an
+      interactive tutorial. The repository is at
+      <a href="https://github.com/tidalcycles/strudel" class="uri">https://github.com/tidalcycles/strudel</a>, all the
+      code is open source under the AGPL-3.0 License.
+    </p>
+    <h1 data-number="12" id="acknowledgments"><span class="header-section-number">12</span> Acknowledgments</h1>
+    <p>
+      Thanks to the Strudel and wider Tidal, live coding, WebAudio and free/open source software communities for
+      inspiration and support. Alex McLean’s work on this project is supported by a UKRI Future Leaders Fellowship
+      [grant number MR/V025260/1].
+    </p>
+    <h1 class="unnumbered" id="references">References</h1>
+    <div id="refs" class="references csl-bib-body hanging-indent" role="doc-bibliography">
+      <div id="ref-FaustProgrammingLanguage2022" class="csl-entry" role="doc-biblioentry">
+        <em>Faust - Programming Language for Audio Applications and Plugins</em>. (2016) 2022. C++. GRAME.
+        <a href="https://github.com/grame-cncm/faust">https://github.com/grame-cncm/faust</a>.
+      </div>
+      <div id="ref-jackHydra2022" class="csl-entry" role="doc-biblioentry">
+        Jack, Olivia. (2022) 2022. <em>Hydra</em>.
+        <a href="https://github.com/ojack/hydra">https://github.com/ojack/hydra</a>.
+      </div>
+      <div id="ref-lanChaosprintGlicol2022" class="csl-entry" role="doc-biblioentry">
+        Lan, Qichao. (2020) 2022. <em>Chaosprint/Glicol</em>. Rust.
+        <a href="https://github.com/chaosprint/glicol">https://github.com/chaosprint/glicol</a>.
+      </div>
+      <div id="ref-mcleanAlgorithmicPattern2020a" class="csl-entry" role="doc-biblioentry">
+        Mclean, Alex. 2020. <span>“Algorithmic Pattern.”</span> In
+        <em>Proceedings of the International Conference on New Interfaces for Musical Expression</em>, 265--270.
+        Birmingham, UK. <a href="https://zenodo.org/record/4813352">https://zenodo.org/record/4813352</a>.
+      </div>
+      <div id="ref-mcleanFeedforward2020" class="csl-entry" role="doc-biblioentry">
+        McLean, Alex. 2020. <span>“Feedforward.”</span> In
+        <em>Proceedings of New Interfaces for Musical Expression</em>. Birmingham.
+        <a href="https://zenodo.org/record/6353969">https://zenodo.org/record/6353969</a>.
+      </div>
+      <div id="ref-mcleanTidalVortexZero2022" class="csl-entry" role="doc-biblioentry">
+        McLean, Alex, Raphaël Forment, Sylvain Le Beux, and Damián Silvani. 2022. <span>“TidalVortex Zero.”</span> In
+        <em>Proceedings of the 7th International Conference on Live Coding</em>. Limerick, Ireland: Zenodo.
+        <a href="https://doi.org/10.5281/zenodo.6456380">https://doi.org/10.5281/zenodo.6456380</a>.
+      </div>
+      <div id="ref-ogbornDktr0WebDirt2022" class="csl-entry" role="doc-biblioentry">
+        Ogborn, David. (2016) 2022. <em>Dktr0/WebDirt</em>. JavaScript.
+        <a href="https://github.com/dktr0/WebDirt">https://github.com/dktr0/WebDirt</a>.
+      </div>
+      <div id="ref-ogbornEstuaryBrowserbasedCollaborative2017" class="csl-entry" role="doc-biblioentry">
+        Ogborn, David, Jamie Beverley, Luis Navarro del Angel, Eldad Tsabary, and Alex McLean. 2017.
+        <span>“Estuary: Browser-Based Collaborative Projectional Live Coding of Musical Patterns.”</span> In
+        <em>Proceedings of the International Conference on Live Coding</em>, 11. Morelia.
+      </div>
+      <div id="ref-robertsGibberLiveCoding2012" class="csl-entry" role="doc-biblioentry">
+        Roberts, Charles, and Joann Kuchera-morin. 2012. <span>“Gibber: Live Coding Audio in the Browser.”</span> In
+        <em>In Proceedings of the 2012 International Computer Music Conference</em>.
+      </div>
+      <div id="ref-StrudelWAC2022" class="csl-entry" role="doc-biblioentry">
+        Roos, Felix, and Alex McLean. 2022. <span>“Strudel: Algorithmic Patterns for the Web.”</span> In. Zenodo.
+        <a href="https://doi.org/10.5281/zenodo.6768844">https://doi.org/10.5281/zenodo.6768844</a>.
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+      <div id="ref-solomonPurescriptocarina2022" class="csl-entry" role="doc-biblioentry">
+        Solomon, Mike. (2021) 2022. <em>Purescript-Ocarina</em>. PureScript.
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+      </div>
+      <div id="ref-SuperDirt2022" class="csl-entry" role="doc-biblioentry">
+        <em>SuperDirt</em>. (2015) 2022. SuperCollider. musikinformatik.
+        <a href="https://github.com/musikinformatik/SuperDirt">https://github.com/musikinformatik/SuperDirt</a>.
+      </div>
+      <div id="ref-toussaintEuclideanAlgorithmGenerates2005" class="csl-entry" role="doc-biblioentry">
+        Toussaint, Godfried. 2005. <span>“The Euclidean Algorithm Generates Traditional Musical Rhythms.”</span> In
+        <em>In Proceedings of BRIDGES: Mathematical Connections in Art, Music and Science</em>, 47–56.
+        <a href="http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.62.231"
+          >http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.62.231</a
+        >.
+      </div>
+      <div id="ref-CsoundWebAssembly" class="csl-entry" role="doc-biblioentry">
+        Yi, Steven, Victor Lazzarini, and Edward Costello. 2018.
+        <span>“WebAssembly AudioWorklet Csound.”</span> In. Berlin, Germany.
+        <a href="https://mural.maynoothuniversity.ie/16018/">https://mural.maynoothuniversity.ie/16018/</a>.
+      </div>
+    </div>
+  </body>
+</html>

docs/iclc2023-paper/iclc2023.md

@@ -451,7 +451,7 @@ While Haskell's type system makes it a great language for the ongoing developmen
 # Links
 
 The Strudel REPL is available at <https://strudel.cc>, including an interactive tutorial.
-The repository is at <https://github.com/tidalcycles/strudel>, all the code is open source under the AGPL-3.0 License.
+The repository is at <https://codeberg.org/uzu/strudel>, all the code is open source under the AGPL-3.0 License.
 
 # Acknowledgments
 

docs/iclc2023-paper/pandoc/iclc.html

@@ -0,0 +1,63 @@
+$if(false)$ This is a pandoc template and should not be edited. $endif$
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml" $if(lang)$ lang="$lang$" xml:lang="$lang$" $endif$>
+  <head>
+    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
+    <meta http-equiv="Content-Style-Type" content="text/css" />
+    <meta name="generator" content="pandoc" />
+    $for(author-meta)$
+    <meta name="author" content="$author-meta$" />
+    $endfor$ $if(date-meta)$
+    <meta name="date" content="$date-meta$" />
+    $endif$
+    <title>$if(title-prefix)$$title-prefix$ - $endif$$pagetitle$</title>
+    <style type="text/css">
+      code {
+        white-space: pre;
+      }
+    </style>
+    $if(quotes)$
+    <style type="text/css">
+      q {
+        quotes: '“' '”' '‘' '’';
+      }
+    </style>
+    $endif$ $if(highlighting-css)$
+    <style type="text/css">
+      $highlighting-css$
+    </style>
+    $endif$
+    <link rel="stylesheet" href="css/iclc.css" $if(html5)$$else$type="text/css" $endif$ />
+    $for(css)$
+    <link rel="stylesheet" href="$css$" $if(html5)$$else$type="text/css" $endif$ />
+    $endfor$ $if(math)$ $math$ $endif$ $for(header-includes)$ $header-includes$ $endfor$
+  </head>
+  <body>
+    $for(include-before)$ $include-before$ $endfor$ $if(title)$
+    <div id="$idprefix$header">
+      <h1 class="title">$title$</h1>
+      $if(subtitle)$
+      <h1 class="subtitle">$subtitle$</h1>
+      $endif$
+      <ul id="authorlist">
+        $for(author)$
+        <li>$author$</li>
+        $endfor$
+      </ul>
+      $if(date)$
+      <h3 class="date">$date$</h3>
+      $endif$
+    </div>
+    $endif$ $if(toc)$
+    <div id="$idprefix$TOC">$toc$</div>
+    $endif$
+
+    <h2 class="abstract">Abstract</h2>
+    <div id="abstract">
+      $if(abstract)$ $abstract$ $else$ Please provide an abstract in the metadata block at the top of your markdown
+      document. Refer to template.txt for details. $endif$
+    </div>
+
+    $body$ $for(include-after)$ $include-after$ $endfor$
+  </body>
+</html>

docs/technical-manual/index.md

@@ -1,4 +1,8 @@
-This document introduces you to Strudel in a technical sense. If you just want to *use* Strudel, have a look at the [Tutorial](https://strudel.tidalcycles.org/tutorial/).
+This document introduces you to Strudel in a technical sense. 
+
+It is rather out of date, but there might still be useful info below.
+
+If you just want to *use* Strudel, have a look at the [Tutorial](https://strudel.tidalcycles.org/tutorial/).
 
 ## Strudel Packages
 
@@ -17,11 +21,11 @@ More info in the [REPL README](https://codeberg.org/uzu/strudel/src/branch/main/
 
 # High Level Overview
 
-<img src="https://github.com/tidalcycles/strudel/blob/talk/talk/public/strudelflow.png?raw=true" width="600" />
+<img src="strudelflow.png" width="600" />
 
 ## 1. End User Code
 
-The End User Code is written in JavaScript with added syntax sugar. The [eval package](https://codeberg.org/uzu/strudel/src/branch/main/packages/eval#strudelcycleseval) evaluates the user code
+The End User Code is written in JavaScript with added syntax sugar. The [eval package](https://github.com/tidalcycles/strudel/tree/main/packages/eval#strudelcycleseval) evaluates the user code
 after a transpilation step, which resolves the syntax sugar. If you don't want the syntax sugar, you can omit the eval package and call the native javascript `eval` instead.
 
 ### 🍭 Syntax Sugar
@@ -54,13 +58,13 @@ This is how it works:
 - The AST is transformed to resolve the syntax sugar
 - The AST is used to generate code again (shift-codegen)
 
-Shift will most likely be replaced with acorn in the future, see https://codeberg.org/uzu/strudel/issues/174
+Shift will most likely be replaced with acorn in the future, see https://github.com/tidalcycles/strudel/issues/174
 
 ### Mini Notation
 
 Another important part of the user code is the mini notation, which allows to express rhythms in a short manner.
 
-- the mini notation is [implemented as a PEG grammar](https://codeberg.org/uzu/strudel/src/branch/main/packages/mini/krill.pegjs), living in the [mini package](https://codeberg.org/uzu/strudel/src/branch/main/packages/mini)
+- the mini notation is [implemented as a PEG grammar](https://github.com/tidalcycles/strudel/blob/main/packages/mini/krill.pegjs), living in the [mini package](https://github.com/tidalcycles/strudel/tree/main/packages/mini)
 - it is based on [krill](https://github.com/Mdashdotdashn/krill) by Mdashdotdashn
 - the peg grammar is used to generate a parser with [peggyjs](https://peggyjs.org/)
 - the generated parser takes a mini notation string and outputs an AST
@@ -171,7 +175,7 @@ Here is an example Hap value with different properties:
 ```js
 { note: 'a4', s: 'sawtooth', gain: 0.5, cutoff: 267 }
 ```
-<img src="https://github.com/tidalcycles/strudel/blob/talk/talk/public/waa-nodes.png?raw=true" width="600" />
+<img src="waa-nodes.png" width="600" />
 
 <div className="text-left">
 
@@ -182,12 +186,12 @@ Here is an example Hap value with different properties:
 
 At the time of writing this doc, the following outputs are supported:
 
-- Web Audio API `.out()` see [/webaudio](https://codeberg.org/uzu/strudel/src/branch/main/packages/webaudio)
-- MIDI `.midi()` see [/midi](https://codeberg.org/uzu/strudel/src/branch/main/packages/midi)
-- OSC `.osc()` see [/osc](https://codeberg.org/uzu/strudel/src/branch/main/packages/osc)
-- Serial `.serial()` see [/serial](https://codeberg.org/uzu/strudel/src/branch/main/packages/serial)
-- Tone.js `.tone()` (deprecated?) [/tone](https://codeberg.org/uzu/strudel/src/branch/main/packages/tone)
-- WebDirt `.webdirt()` (deprecated?) [/webdirt](https://codeberg.org/uzu/strudel/src/branch/main/packages/webdirt)
-- Speech `.speak()` (experimental) part of [/core](https://codeberg.org/uzu/strudel/src/branch/main/packages/core)
+- Web Audio API `.out()` see [/webaudio](https://github.com/tidalcycles/strudel/tree/main/packages/webaudio)
+- MIDI `.midi()` see [/midi](https://github.com/tidalcycles/strudel/tree/main/packages/midi)
+- OSC `.osc()` see [/osc](https://github.com/tidalcycles/strudel/tree/main/packages/osc)
+- Serial `.serial()` see [/serial](https://github.com/tidalcycles/strudel/tree/main/packages/serial)
+- Tone.js `.tone()` (deprecated?) [/tone](https://github.com/tidalcycles/strudel/tree/main/packages/tone)
+- WebDirt `.webdirt()` (deprecated?) [/webdirt](https://github.com/tidalcycles/strudel/tree/main/packages/webdirt)
+- Speech `.speak()` (experimental) part of [/core](https://github.com/tidalcycles/strudel/tree/main/packages/core)
 
-These could change, so make sure to check the [packages folder](https://codeberg.org/uzu/strudel/src/branch/main/packages).
+These could change, so make sure to check the [packages folder](https://github.com/tidalcycles/strudel/tree/main/packages).

eslint.config.mjs

@@ -83,4 +83,14 @@ export default [
       ],
     },
   },
+  {
+    // Properties provided by AudioWorkletGlobalScope
+    files: ['packages/superdough/worklets.mjs'],
+    languageOptions: {
+      globals: {
+        currentTime: 'readonly',
+        sampleRate: 'readonly',
+      },
+    },
+  },
 ];

jsdoc/jsdoc-synonyms.js

@@ -1,5 +1,5 @@
 /*
-jsdoc-synonyms.js - Add support for @synonym tag
+jsdoc-synonyms.js - Add support for @synonyms tag
 Copyright (C) 2023 Strudel contributors - see <https://codeberg.org/uzu/strudel/activity/contributors>
 This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Affero General Public License for more details. You should have received a copy of the GNU Affero General Public License along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

packages/README.md

@@ -2,4 +2,4 @@
 
 Each folder represents one of the @strudel/* packages [published to npm](https://www.npmjs.com/org/strudel).
 
-To understand how those pieces connect, refer to the [Technical Manual](https://codeberg.org/uzu/strudel/src/branch/main/technical-manual.md) or the individual READMEs.
+To understand how those pieces connect, refer to the [Technical Manual](https://codeberg.org/uzu/strudel/wiki/Technical-Manual) or the individual READMEs.

packages/codemirror/codemirror.mjs

@@ -1,7 +1,7 @@
 import { closeBrackets } from '@codemirror/autocomplete';
 export { toggleComment, toggleBlockComment, toggleLineComment, toggleBlockCommentByLine } from '@codemirror/commands';
 // import { search, highlightSelectionMatches } from '@codemirror/search';
-import { history } from '@codemirror/commands';
+import { history, indentWithTab } from '@codemirror/commands';
 import { javascript } from '@codemirror/lang-javascript';
 import { defaultHighlightStyle, syntaxHighlighting, bracketMatching } from '@codemirror/language';
 import { Compartment, EditorState, Prec } from '@codemirror/state';
@@ -37,6 +37,14 @@ const extensions = {
   isActiveLineHighlighted: (on) => (on ? [highlightActiveLine(), highlightActiveLineGutter()] : []),
   isFlashEnabled,
   keybindings,
+  isTabIndentationEnabled: (on) => (on ? keymap.of([indentWithTab]) : []),
+  isMultiCursorEnabled: (on) =>
+    on
+      ? [
+          EditorState.allowMultipleSelections.of(true),
+          EditorView.clickAddsSelectionRange.of((ev) => ev.metaKey || ev.ctrlKey),
+        ]
+      : [],
 };
 const compartments = Object.fromEntries(Object.keys(extensions).map((key) => [key, new Compartment()]));
 
@@ -51,6 +59,8 @@ export const defaultSettings = {
   isFlashEnabled: true,
   isTooltipEnabled: false,
   isLineWrappingEnabled: false,
+  isTabIndentationEnabled: false,
+  isMultiCursorEnabled: false,
   theme: 'strudelTheme',
   fontFamily: 'monospace',
   fontSize: 18,
@@ -62,7 +72,7 @@ export const codemirrorSettings = persistentAtom('codemirror-settings', defaultS
 });
 
 // https://codemirror.net/docs/guide/
-export function initEditor({ initialCode = '', onChange, onEvaluate, onStop, root }) {
+export function initEditor({ initialCode = '', onChange, onEvaluate, onStop, root, mondo }) {
   const settings = codemirrorSettings.get();
   const initialSettings = Object.keys(compartments).map((key) =>
     compartments[key].of(extensions[key](parseBooleans(settings[key]))),
@@ -75,7 +85,7 @@ export function initEditor({ initialCode = '', onChange, onEvaluate, onStop, roo
       /* search(),
       highlightSelectionMatches(), */
       ...initialSettings,
-      javascript(),
+      mondo ? [] : javascript(),
       sliderPlugin,
       widgetPlugin,
       // indentOnInput(), // works without. already brought with javascript extension?
@@ -209,6 +219,7 @@ export class StrudelMirror {
       },
       onEvaluate: () => this.evaluate(),
       onStop: () => this.stop(),
+      mondo: replOptions.mondo,
     });
     const cmEditor = this.root.querySelector('.cm-editor');
     if (cmEditor) {

packages/codemirror/highlight.mjs

@@ -1,4 +1,4 @@
-import { RangeSetBuilder, StateEffect, StateField } from '@codemirror/state';
+import { RangeSetBuilder, StateEffect, StateField, Prec } from '@codemirror/state';
 import { Decoration, EditorView } from '@codemirror/view';
 
 export const setMiniLocations = StateEffect.define();
@@ -134,5 +134,5 @@ export const isPatternHighlightingEnabled = (on, config) => {
     setTimeout(() => {
       updateMiniLocations(config.editor, config.miniLocations);
     }, 100);
-  return on ? highlightExtension : [];
+  return on ? Prec.highest(highlightExtension) : [];
 };

packages/codemirror/keybindings.mjs

@@ -21,11 +21,11 @@ const vscodeExtension = (options) => [vscodePlugin].concat(options ?? []);
 const keymaps = {
   vim,
   emacs,
+  codemirror: () => keymap.of(defaultKeymap),
   vscode: vscodeExtension,
 };
 
 export function keybindings(name) {
   const active = keymaps[name];
-  return [keymap.of(defaultKeymap), keymap.of(historyKeymap), active ? active() : []];
-  // keymap.of(searchKeymap),
+  return [active ? active() : [], keymap.of(historyKeymap)];
 }

packages/codemirror/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@strudel/codemirror",
-  "version": "1.2.2",
+  "version": "1.2.3",
   "description": "Codemirror Extensions for Strudel",
   "main": "index.mjs",
   "publishConfig": {

packages/codemirror/themes.mjs

@@ -8,6 +8,11 @@ import CutiePi, { settings as CutiePiSettings } from './themes/CutiePi.mjs';
 import sonicPink, { settings as sonicPinkSettings } from './themes/sonic-pink.mjs';
 import redText, { settings as redTextSettings } from './themes/red-text.mjs';
 import greenText, { settings as greenTextSettings } from './themes/green-text.mjs';
+import archBtw, { settings as archBtwSettings } from './themes/archBtw.mjs';
+import fruitDaw, { settings as fruitDawSettings } from './themes/fruitDaw.mjs';
+
+import bluescreenlight, { settings as bluescreenlightsettings } from './themes/bluescreenlight.mjs';
+
 import androidstudio, { settings as androidstudioSettings } from './themes/androidstudio.mjs';
 import atomone, { settings as atomOneSettings } from './themes/atomone.mjs';
 import aura, { settings as auraSettings } from './themes/aura.mjs';
@@ -39,17 +44,20 @@ import { setTheme } from '@strudel/draw';
 export const themes = {
   strudelTheme,
   algoboy,
+  archBtw,
   androidstudio,
   atomone,
   aura,
   bbedit,
   blackscreen,
   bluescreen,
+  bluescreenlight,
   CutiePi,
   darcula,
   dracula,
   duotoneDark,
   eclipse,
+  fruitDaw,
   githubDark,
   githubLight,
   greenText,
@@ -78,10 +86,12 @@ export const themes = {
 export const settings = {
   strudelTheme: strudelThemeSettings,
   bluescreen: bluescreenSettings,
+  bluescreenlight: bluescreenlightsettings,
   blackscreen: blackscreenSettings,
   whitescreen: whitescreenSettings,
   teletext: teletextSettings,
   algoboy: algoboySettings,
+  archBtw: archBtwSettings,
   androidstudio: androidstudioSettings,
   atomone: atomOneSettings,
   aura: auraSettings,
@@ -92,9 +102,11 @@ export const settings = {
   eclipse: eclipseSettings,
   CutiePi: CutiePiSettings,
   sonicPink: sonicPinkSettings,
+  fruitDaw: fruitDawSettings,
   githubLight: githubLightSettings,
   githubDark: githubDarkSettings,
   greenText: greenTextSettings,
+
   gruvboxDark: gruvboxDarkSettings,
   gruvboxLight: gruvboxLightSettings,
   materialDark: materialDarkSettings,

packages/codemirror/themes/archBtw.mjs

@@ -0,0 +1,38 @@
+/*
+ * Arch Btw
+ * Modern terminal inspired theme
+ * made by Jade
+ */
+import { tags as t } from '@lezer/highlight';
+import { createTheme } from './theme-helper.mjs';
+
+const hex = ['rgb(0, 0, 0)', 'rgb(82, 208, 250)', 'rgba(113, 208, 250, .4)', 'rgba(113, 208, 250, .15)'];
+
+export const settings = {
+  background: hex[0],
+  lineBackground: 'transparent',
+  foreground: hex[1],
+  selection: hex[2],
+  selectionMatch: hex[0],
+  gutterBackground: hex[0],
+  gutterForeground: hex[2],
+  gutterBorder: 'transparent',
+  lineHighlight: hex[0],
+};
+
+export default createTheme({
+  theme: 'dark',
+  settings,
+  styles: [
+    {
+      tag: [t.function(t.variableName), t.function(t.propertyName), t.url, t.processingInstruction],
+      color: hex[1],
+    },
+    { tag: [t.atom, t.bool, t.special(t.variableName)], color: hex[1] },
+    { tag: [t.comment, t.brace, t.bracket], color: hex[2] },
+    { tag: [t.variableName, t.propertyName, t.labelName], color: hex[1] },
+    { tag: [t.attributeName, t.number], color: hex[1] },
+    { tag: t.keyword, color: hex[1] },
+    { tag: [t.string, t.regexp, t.special(t.propertyName)], color: hex[1] },
+  ],
+});

packages/codemirror/themes/bluescreenlight.mjs

@@ -0,0 +1,37 @@
+/*
+ * A lighter blue screen theme
+ * made by Jade
+ */
+import { tags as t } from '@lezer/highlight';
+import { createTheme } from './theme-helper.mjs';
+
+const hex = ['rgb(75, 130, 247)', 'rgb(47, 108, 246)', 'rgb(255, 255, 255)', 'rgba(255, 255, 255,.3)'];
+
+export const settings = {
+  background: hex[0],
+  lineBackground: 'transparent',
+  foreground: hex[2],
+  selection: hex[3],
+  selectionMatch: hex[0],
+  gutterBackground: hex[0],
+  gutterForeground: hex[2],
+  gutterBorder: 'transparent',
+  lineHighlight: hex[1],
+};
+
+export default createTheme({
+  theme: 'dark',
+  settings,
+  styles: [
+    {
+      tag: [t.function(t.variableName), t.function(t.propertyName), t.url, t.processingInstruction],
+      color: hex[2],
+    },
+    { tag: [t.atom, t.bool, t.special(t.variableName)], color: hex[2] },
+    { tag: [t.comment, t.bracket, t.brace, t.compareOperator], color: hex[3] },
+    { tag: [t.variableName, t.propertyName, t.labelName], color: hex[2] },
+    { tag: [t.attributeName, t.number], color: hex[2] },
+    { tag: t.keyword, color: hex[2] },
+    { tag: [t.string, t.regexp, t.special(t.propertyName)], color: hex[2] },
+  ],
+});

packages/codemirror/themes/fruitDaw.mjs

@@ -0,0 +1,50 @@
+/*
+ * Fruit Daw
+ * made by Jade
+ */
+import { tags as t } from '@lezer/highlight';
+import { createTheme } from './theme-helper.mjs';
+
+const hex = [
+  'rgb(84, 93, 98)',
+  'rgb(255, 255, 255)',
+  'rgba(255, 255, 255, .25)',
+  'rgb(67, 76, 81)',
+  'rgb(186, 230, 115)',
+  'rgb(252, 184, 67)',
+  'rgb(124, 206, 254)',
+  'rgb(83, 101, 102)',
+  'rgba(46, 62, 72,.5)',
+  'rgb(94, 100, 108)',
+  'rgb(167, 216, 177)',
+];
+
+export const settings = {
+  background: hex[0],
+  lineBackground: 'transparent',
+  foreground: hex[10],
+  selection: hex[8],
+  selectionMatch: hex[0],
+  gutterBackground: hex[3],
+  gutterForeground: hex[2],
+  gutterBorder: 'transparent',
+  lineHighlight: hex[3],
+};
+
+export default createTheme({
+  theme: 'dark',
+  settings,
+  styles: [
+    {
+      tag: [t.function(t.variableName), t.function(t.propertyName), t.url, t.processingInstruction],
+      color: hex[1],
+    },
+    { tag: [t.bool, t.special(t.variableName)], color: hex[1] },
+    { tag: [t.comment, t.brace, t.bracket], color: hex[2] },
+    { tag: [t.variableName], color: hex[1] },
+    { tag: [t.labelName, t.propertyName, t.self, t.atom], color: hex[5] },
+    { tag: [t.attributeName, t.number], color: hex[6] },
+    { tag: t.keyword, color: hex[5] },
+    { tag: [t.string, t.regexp, t.special(t.propertyName)], color: hex[4] },
+  ],
+});

packages/core/controls.mjs

@@ -4,13 +4,14 @@ Copyright (C) 2022 Strudel contributors - see <https://codeberg.org/uzu/strudel/
 This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Affero General Public License for more details. You should have received a copy of the GNU Affero General Public License along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
-import { Pattern, register, sequence } from './pattern.mjs';
+import { Pattern, register, reify } from './pattern.mjs';
 
 export function createParam(names) {
   let isMulti = Array.isArray(names);
   names = !isMulti ? [names] : names;
   const name = names[0];
 
+  // todo: make this less confusing
   const withVal = (xs) => {
     let bag;
     // check if we have an object with an unnamed control (.value)
@@ -35,25 +36,34 @@ export function createParam(names) {
     }
   };
 
-  const func = (...pats) => sequence(...pats).withValue(withVal);
-
-  const setter = function (...pats) {
-    if (!pats.length) {
-      return this.fmap(withVal);
+  // todo: make this less confusing
+  const func = function (value, pat) {
+    if (!pat) {
+      return reify(value).withValue(withVal);
     }
-    return this.set(func(...pats));
+    if (typeof value === 'undefined') {
+      return pat.fmap(withVal);
+    }
+    return pat.set(reify(value).withValue(withVal));
+  };
+  Pattern.prototype[name] = function (value) {
+    return func(value, this);
   };
-  Pattern.prototype[name] = setter;
   return func;
 }
 
 // maps control alias names to the "main" control name
 const controlAlias = new Map();
 
+export function isControlName(name) {
+  return controlAlias.has(name);
+}
+
 export function registerControl(names, ...aliases) {
   const name = Array.isArray(names) ? names[0] : names;
   let bag = {};
   bag[name] = createParam(names);
+  controlAlias.set(name, name);
   aliases.forEach((alias) => {
     bag[alias] = bag[name];
     controlAlias.set(alias, name);
@@ -242,6 +252,20 @@ export const { fmenv } = registerControl('fmenv');
  *
  */
 export const { fmattack } = registerControl('fmattack');
+
+/**
+ * waveform of the fm modulator
+ *
+ * @name fmwave
+ * @param {number | Pattern} wave waveform
+ * @example
+ * n("0 1 2 3".fast(4)).scale("d:minor").s("sine").fmwave("<sine square sawtooth crackle>").fm(4).fmh(2.01)
+ * @example
+ * n("0 1 2 3".fast(4)).chord("<Dm Am F G>").voicing().s("sawtooth").fmwave("brown").fm(.6)
+ *
+ */
+export const { fmwave } = registerControl('fmwave');
+
 /**
  * Decay time for the FM envelope: seconds until the sustain level is reached after the attack phase.
  *
@@ -296,6 +320,7 @@ export const { fft } = registerControl('fft');
  *
  * @name decay
  * @param {number | Pattern} time decay time in seconds
+ * @synonyms dec
  * @example
  * note("c3 e3 f3 g3").decay("<.1 .2 .3 .4>").sustain(0)
  *
@@ -434,6 +459,78 @@ export const { crush } = registerControl('crush');
  */
 export const { coarse } = registerControl('coarse');
 
+/**
+ * modulate the amplitude of a sound with a continuous waveform
+ *
+ * @name tremolo
+ * @synonyms trem
+ * @param {number | Pattern} speed modulation speed in HZ
+ * @example
+ * note("d d d# d".fast(4)).s("supersaw").tremolo("<3 2 100> ").tremoloskew("<.5>")
+ *
+ */
+export const { tremolo } = registerControl(['tremolo', 'tremolodepth', 'tremoloskew', 'tremolophase'], 'trem');
+
+/**
+ * modulate the amplitude of a sound with a continuous waveform
+ *
+ * @name tremolosync
+ * @synonyms tremsync
+ * @param {number | Pattern} cycles modulation speed in cycles
+ * @example
+ * note("d d d# d".fast(4)).s("supersaw").tremolosync("4").tremoloskew("<1 .5 0>")
+ *
+ */
+export const { tremolosync } = registerControl(
+  ['tremolosync', 'tremolodepth', 'tremoloskew', 'tremolophase'],
+  'tremsync',
+);
+
+/**
+ * depth of amplitude modulation
+ *
+ * @name tremolodepth
+ * @synonyms tremdepth
+ * @param {number | Pattern} depth
+ * @example
+ * note("a1 a1 a#1 a1".fast(4)).s("pulse").tremsync(4).tremolodepth("<1 2 .7>")
+ *
+ */
+export const { tremolodepth } = registerControl('tremolodepth', 'tremdepth');
+/**
+ * alter the shape of the modulation waveform
+ *
+ * @name tremoloskew
+ * @synonyms tremskew
+ * @param {number | Pattern} amount between 0 & 1, the shape of the waveform
+ * @example
+ * note("{f a c e}%16").s("sawtooth").tremsync(4).tremoloskew("<.5 0 1>")
+ *
+ */
+export const { tremoloskew } = registerControl('tremoloskew', 'tremskew');
+
+/**
+ * alter the phase of the modulation waveform
+ *
+ * @name tremolophase
+ * @synonyms tremphase
+ * @param {number | Pattern} offset the offset in cycles of the modulation
+ * @example
+ * note("{f a c e}%16").s("sawtooth").tremsync(4).tremolophase("<0 .25 .66>")
+ *
+ */
+export const { tremolophase } = registerControl('tremolophase', 'tremphase');
+
+/**
+ * shape of amplitude modulation
+ *
+ * @name tremoloshape
+ * @param {number | Pattern} shape tri | square | sine | saw | ramp
+ * @example
+ * note("{f g c d}%16").tremsync(4).tremoloshape("<sine tri square>").s("sawtooth")
+ *
+ */
+export const { tremoloshape } = registerControl('tremoloshape', 'tremshape');
 /**
  * filter overdrive for supported filter types
  *
@@ -443,6 +540,42 @@ export const { coarse } = registerControl('coarse');
  * note("{f g g c d a a#}%16".sub(17)).s("supersaw").lpenv(8).lpf(150).lpq(.8).ftype('ladder').drive("<.5 4>")
  *
  */
+
+/**
+ * modulate the amplitude of an orbit to create a "sidechain" like effect
+ *
+ * @name duckorbit
+ * @param {number | Pattern} orbit target orbit
+ * @example
+ * $: n(run(16)).scale("c:minor:pentatonic").s("sawtooth").delay(.7).orbit(2)
+ * $: s("bd:4!4").beat("0,4,8,11,14",16).duckorbit(2).duckattack(0.2).duckdepth(1)
+ *
+ */
+export const { duck } = registerControl('duckorbit', 'duck');
+
+/**
+ *  the amount of ducking applied to target orbit
+ *
+ * @name duckdepth
+ * @param {number | Pattern} depth depth of modulation from 0 to 1
+ * @example
+ * stack( n(run(8)).scale("c:minor").s("sawtooth").delay(.7).orbit(2), s("bd:4!4").beat("0,4,8,11,14",16).duckorbit(2).duckattack(0.2).duckdepth("<1 .9 .6 0>"))
+ *
+ */
+
+export const { duckdepth } = registerControl('duckdepth');
+
+/**
+ *  the attack time of the duck effect
+ *
+ * @name duckattack
+ * @param {number | Pattern} time
+ * @example
+ * stack( n(run(8)).scale("c:minor").s("sawtooth").delay(.7).orbit(2), s("bd:4!4").beat("0,4,8,11,14",16).duckorbit(2).duckattack("<0.2 0 0.4>").duckdepth(1))
+ *
+ */
+export const { duckattack } = registerControl('duckattack', 'duckatt');
+
 export const { drive } = registerControl('drive');
 
 /**
@@ -975,15 +1108,31 @@ export const { delayfeedback, delayfb, dfb } = registerControl('delayfeedback',
  *
  */
 export const { delaytime, delayt, dt } = registerControl('delaytime', 'delayt', 'dt');
-/* // TODO: test
+
+/**
+ * Sets the time of the delay effect in cycles.
+ *
+ * @name delaysync
+ * @param {number | Pattern} cycles delay length in cycles
+ * @synonyms delayt, dt
+ * @example
+ * s("bd bd").delay(.25).delaysync("<1 2 3 5>".div(8))
+ *
+ */
+export const { delaysync } = registerControl('delaysync');
+
+/**
  * Specifies whether delaytime is calculated relative to cps.
  *
  * @name lock
  * @param {number | Pattern} enable When set to 1, delaytime is a direct multiple of a cycle.
+ * @superdirtOnly
  * @example
  * s("sd").delay().lock(1).osc()
  *
+ *
  */
+
 export const { lock } = registerControl('lock');
 /**
  * Set detune for stacked voices of supported oscillators
@@ -1535,18 +1684,6 @@ export const { density } = registerControl('density');
 // ['modwheel'],
 export const { expression } = registerControl('expression');
 export const { sustainpedal } = registerControl('sustainpedal');
-/* // TODO: doesn't seem to do anything
- *
- * Tremolo Audio DSP effect
- *
- * @name tremolodepth
- * @param {number | Pattern} depth between 0 and 1
- * @example
- * n("0,4,7").tremolodepth("<0 .3 .6 .9>").osc()
- *
- */
-export const { tremolodepth, tremdp } = registerControl('tremolodepth', 'tremdp');
-export const { tremolorate, tremr } = registerControl('tremolorate', 'tremr');
 
 export const { fshift } = registerControl('fshift');
 export const { fshiftnote } = registerControl('fshiftnote');
@@ -1623,7 +1760,6 @@ export const { zmod } = registerControl('zmod');
 // like crush but scaled differently
 export const { zcrush } = registerControl('zcrush');
 export const { zdelay } = registerControl('zdelay');
-export const { tremolo } = registerControl('tremolo');
 export const { zzfx } = registerControl('zzfx');
 
 /**

packages/core/cyclist.mjs

@@ -5,7 +5,7 @@ This program is free software: you can redistribute it and/or modify it under th
 */
 
 import createClock from './zyklus.mjs';
-import { logger } from './logger.mjs';
+import { errorLogger, logger } from './logger.mjs';
 
 export class Cyclist {
   constructor({
@@ -67,6 +67,7 @@ export class Cyclist {
               // the following line is dumb and only here for backwards compatibility
               // see https://codeberg.org/uzu/strudel/pulls/1004
               const deadline = targetTime - phase;
+              // this onTrigger has another signature
               onTrigger?.(hap, deadline, duration, this.cps, targetTime);
               if (hap.value.cps !== undefined && this.cps != hap.value.cps) {
                 this.cps = hap.value.cps;
@@ -75,7 +76,7 @@ export class Cyclist {
             }
           });
         } catch (e) {
-          logger(`[cyclist] error: ${e.message}`);
+          errorLogger(e);
           onError?.(e);
         }
       },

packages/core/euclid.mjs

@@ -10,7 +10,7 @@ https://rohandrape.net/?t=hmt
 This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Affero General Public License for more details. You should have received a copy of the GNU Affero General Public License along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
-import { timeCat, register, silence } from './pattern.mjs';
+import { timeCat, register, silence, stack, pure, _morph } from './pattern.mjs';
 import { rotate, flatten, splitAt, zipWith } from './util.mjs';
 import Fraction, { lcm } from './fraction.mjs';
 
@@ -139,6 +139,14 @@ export const euclid = register('euclid', function (pulses, steps, pat) {
   return pat.struct(_euclidRot(pulses, steps, 0));
 });
 
+export const e = register('e', function (euc, pat) {
+  if (!Array.isArray(euc)) {
+    euc = [euc];
+  }
+  const [pulses, steps = pulses, rot = 0] = euc;
+  return pat.struct(_euclidRot(pulses, steps, rot));
+});
+
 export const { euclidrot, euclidRot } = register(['euclidrot', 'euclidRot'], function (pulses, steps, rotation, pat) {
   return pat.struct(_euclidRot(pulses, steps, rotation));
 });
@@ -188,3 +196,26 @@ export const euclidLegato = register(['euclidLegato'], function (pulses, steps,
 export const euclidLegatoRot = register(['euclidLegatoRot'], function (pulses, steps, rotation, pat) {
   return _euclidLegato(pulses, steps, rotation, pat);
 });
+
+/**
+ * A 'euclid' variant with an additional parameter that morphs the resulting
+ * rhythm from 0 (no morphing) to 1 (completely 'even'). For example
+ * `sound("bd").euclidish(3,8,0)` would be the same as
+ * `sound("bd").euclid(3,8)`, and `sound("bd").euclidish(3,8,1)` would be the
+ * same as `sound("bd bd bd")`. `sound("bd").euclidish(3,8,0.5)` would have a
+ * groove somewhere between.
+ * Inspired by the work of Malcom Braff.
+ * @name euclidish
+ * @synonyms eish
+ * @memberof Pattern
+ * @param {number} pulses the number of onsets
+ * @param {number} steps the number of steps to fill
+ * @param {number} groove exists between the extremes of 0 (straight euclidian) and 1 (straight pulse)
+ * @example
+ * sound("hh").euclidish(7,12,sine.slow(8))
+ * .pan(sine.slow(8))
+ */
+export const { euclidish, eish } = register(['euclidish', 'eish'], function (pulses, steps, perc, pat) {
+  const morphed = _morph(bjork(pulses, steps), new Array(pulses).fill(1), perc);
+  return pat.struct(morphed).setSteps(steps);
+});

packages/core/evaluate.mjs

@@ -4,6 +4,8 @@ Copyright (C) 2022 Strudel contributors - see <https://codeberg.org/uzu/strudel/
 This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Affero General Public License for more details. You should have received a copy of the GNU Affero General Public License along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
+export const strudelScope = {};
+
 export const evalScope = async (...args) => {
   const results = await Promise.allSettled(args);
   const modules = results.filter((result) => result.status === 'fulfilled').map((r) => r.value);
@@ -18,6 +20,7 @@ export const evalScope = async (...args) => {
   modules.forEach((module) => {
     Object.entries(module).forEach(([name, value]) => {
       globalThis[name] = value;
+      strudelScope[name] = value;
     });
   });
   return modules;

packages/core/hap.mjs

@@ -4,6 +4,7 @@ Copyright (C) 2022 Strudel contributors - see <https://codeberg.org/uzu/strudel/
 This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Affero General Public License for more details. You should have received a copy of the GNU Affero General Public License along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 import Fraction from './fraction.mjs';
+import { stringifyValues } from './util.mjs';
 
 export class Hap {
   /*
@@ -148,13 +149,7 @@ export class Hap {
   }
 
   showWhole(compact = false) {
-    return `${this.whole == undefined ? '~' : this.whole.show()}: ${
-      typeof this.value === 'object'
-        ? compact
-          ? JSON.stringify(this.value).slice(1, -1).replaceAll('"', '').replaceAll(',', ' ')
-          : JSON.stringify(this.value)
-        : this.value
-    }`;
+    return `${this.whole == undefined ? '~' : this.whole.show()}: ${stringifyValues(this.value, compact)}`;
   }
 
   combineContext(b) {

packages/core/logger.mjs

@@ -4,6 +4,12 @@ let debounce = 1000,
   lastMessage,
   lastTime;
 
+export function errorLogger(e, origin = 'cyclist') {
+  //TODO: add some kind of debug flag that enables this  while in dev mode
+  // console.error(e);
+  logger(`[${origin}] error: ${e.message}`);
+}
+
 export function logger(message, type, data = {}) {
   let t = performance.now();
   if (lastMessage === message && t - lastTime < debounce) {

packages/core/neocyclist.mjs

@@ -11,7 +11,6 @@ export class NeoCyclist {
   constructor({ onTrigger, onToggle, getTime }) {
     this.started = false;
     this.cps = 0.5;
-    this.lastTick = 0; // absolute time when last tick (clock callback) happened
     this.getTime = getTime; // get absolute time
     this.time_at_last_tick_message = 0;
     // the clock of the worker and the audio context clock can drift apart over time

packages/core/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@strudel/core",
-  "version": "1.2.2",
+  "version": "1.2.3",
   "description": "Port of Tidal Cycles to JavaScript",
   "main": "index.mjs",
   "type": "module",

packages/core/pattern.mjs

@@ -21,6 +21,8 @@ import {
   numeralArgs,
   parseNumeral,
   pairs,
+  zipWith,
+  stringifyValues,
 } from './util.mjs';
 import drawLine from './drawLine.mjs';
 import { logger } from './logger.mjs';
@@ -852,14 +854,29 @@ export class Pattern {
     );
   }
 
-  log(func = (_, hap) => `[hap] ${hap.showWhole(true)}`, getData = (_, hap) => ({ hap })) {
+  /**
+   * Writes the content of the current event to the console (visible in the side menu).
+   * @name log
+   * @memberof Pattern
+   * @example
+   * s("bd sd").log()
+   */
+  log(func = (hap) => `[hap] ${hap.showWhole(true)}`, getData = (hap) => ({ hap })) {
     return this.onTrigger((...args) => {
       logger(func(...args), undefined, getData(...args));
     }, false);
   }
 
-  logValues(func = id) {
-    return this.log((_, hap) => func(hap.value));
+  /**
+   * A simplified version of `log` which writes all "values" (various configurable parameters)
+   * within the event to the console (visible in the side menu).
+   * @name logValues
+   * @memberof Pattern
+   * @example
+   * s("bd sd").gain("0.25 0.5 1").n("2 1 0").logValues()
+   */
+  logValues(func = (value) => `[hap] ${stringifyValues(value, true)}`) {
+    return this.log((hap) => func(hap.value));
   }
 
   //////////////////////////////////////////////////////////////////////
@@ -869,6 +886,31 @@ export class Pattern {
     console.log(drawLine(this));
     return this;
   }
+
+  //////////////////////////////////////////////////////////////////////
+  // methods relating to breaking patterns into subcycles
+
+  // Breaks a pattern into a pattern of patterns, according to the structure of the given binary pattern.
+  unjoin(pieces, func = id) {
+    return pieces.withHap((hap) =>
+      hap.withValue((v) => (v ? func(this.ribbon(hap.whole.begin, hap.whole.duration)) : this)),
+    );
+  }
+
+  /**
+   * Breaks a pattern into pieces according to the structure of a given pattern.
+   * True values in the given pattern cause the corresponding subcycle of the
+   * source pattern to be looped, and for an (optional) given function to be
+   * applied. False values result in the corresponding part of the source pattern
+   * to be played unchanged.
+   * @name into
+   * @memberof Pattern
+   * @example
+   * sound("bd sd ht lt").into("1 0", hurry(2))
+   */
+  into(pieces, func) {
+    return this.unjoin(pieces, func).innerJoin();
+  }
 }
 
 //////////////////////////////////////////////////////////////////////
@@ -904,12 +946,13 @@ Pattern.prototype.collect = function () {
  * note("<[c,eb,g]!2 [c,f,ab] [d,f,ab]>")
  * .arpWith(haps => haps[2])
  * */
-Pattern.prototype.arpWith = function (func) {
-  return this.collect()
+export const arpWith = register('arpWith', (func, pat) => {
+  return pat
+    .collect()
     .fmap((v) => reify(func(v)))
     .innerJoin()
     .withHap((h) => new Hap(h.whole, h.part, h.value.value, h.combineContext(h.value)));
-};
+});
 
 /**
  * Selects indices in in stacked notes.
@@ -917,9 +960,11 @@ Pattern.prototype.arpWith = function (func) {
  * note("<[c,eb,g]!2 [c,f,ab] [d,f,ab]>")
  * .arp("0 [0,2] 1 [0,2]")
  * */
-Pattern.prototype.arp = function (pat) {
-  return this.arpWith((haps) => pat.fmap((i) => haps[i % haps.length]));
-};
+export const arp = register(
+  'arp',
+  (indices, pat) => pat.arpWith((haps) => reify(indices).fmap((i) => haps[i % haps.length])),
+  false,
+);
 
 /*
  * Takes a time duration followed by one or more patterns, and shifts the given patterns in time, so they are
@@ -1260,7 +1305,7 @@ export function sequenceP(pats) {
  * @synonyms polyrhythm, pr
  * @example
  * stack("g3", "b3", ["e4", "d4"]).note()
- * // "g3,b3,[e4,d4]".note()
+ * // "g3,b3,[e4 d4]".note()
  *
  * @example
  * // As a chained function:
@@ -1541,7 +1586,7 @@ export const func = curry((a, b) => reify(b).func(a));
 /**
  * Registers a new pattern method. The method is added to the Pattern class + the standalone function is returned from register.
  *
- * @param {string} name name of the function
+ * @param {string | string[]} name name of the function, or an array of names to be used as synonyms
  * @param {function} func function with 1 or more params, where last is the current pattern
  * @noAutocomplete
  *
@@ -1981,6 +2026,7 @@ export const apply = register('apply', function (func, pat) {
 
 /**
  * Plays the pattern at the given cycles per minute.
+ * @deprecated
  * @example
  * s("<bd sd>,hh*2").cpm(90) // = 90 bpm
  */
@@ -2490,6 +2536,37 @@ export const { fastchunk, fastChunk } = register(
   true,
 );
 
+/**
+ * Like `chunk`, but the function is applied to a looped subcycle of the source pattern.
+ * @name chunkInto
+ * @synonyms chunkinto
+ * @memberof Pattern
+ * @example
+ * sound("bd sd ht lt bd - cp lt").chunkInto(4, hurry(2))
+ *   .bank("tr909")
+ */
+export const { chunkinto, chunkInto } = register(['chunkinto', 'chunkInto'], function (n, func, pat) {
+  return pat.into(fastcat(true, ...Array(n - 1).fill(false))._iterback(n), func);
+});
+
+/**
+ * Like `chunkInto`, but moves backwards through the chunks.
+ * @name chunkBackInto
+ * @synonyms chunkbackinto
+ * @memberof Pattern
+ * @example
+ * sound("bd sd ht lt bd - cp lt").chunkInto(4, hurry(2))
+ *   .bank("tr909")
+ */
+export const { chunkbackinto, chunkBackInto } = register(['chunkbackinto', 'chunkBackInto'], function (n, func, pat) {
+  return pat.into(
+    fastcat(true, ...Array(n - 1).fill(false))
+      ._iter(n)
+      ._early(1),
+    func,
+  );
+});
+
 // TODO - redefine elsewhere in terms of mask
 export const bypass = register(
   'bypass',
@@ -2505,7 +2582,7 @@ export const bypass = register(
  * Loops the pattern inside an `offset` for `cycles`.
  * If you think of the entire span of time in cycles as a ribbon, you can cut a single piece and loop it.
  * @name ribbon
- * @synonym rib
+ * @synonyms rib
  * @param {number} offset start point of loop in cycles
  * @param {number} cycles loop length in cycles
  * @example
@@ -2719,7 +2796,7 @@ export function stepcat(...timepats) {
   if (timepats.length === 0) {
     return nothing;
   }
-  const findsteps = (x) => (Array.isArray(x) ? x : [x._steps, x]);
+  const findsteps = (x) => (Array.isArray(x) ? x : [x._steps ?? 1, x]);
   timepats = timepats.map(findsteps);
   if (timepats.find((x) => x[0] === undefined)) {
     const times = timepats.map((a) => a[0]).filter((x) => x !== undefined);
@@ -3203,7 +3280,7 @@ export const slice = register(
  * s("bd!8").onTriggerTime((hap) => {console.info(hap)})
  */
 Pattern.prototype.onTriggerTime = function (func) {
-  return this.onTrigger((t_deprecate, hap, currentTime, cps = 1, targetTime) => {
+  return this.onTrigger((hap, currentTime, _cps, targetTime) => {
     const diff = targetTime - currentTime;
     window.setTimeout(() => {
       func(hap);
@@ -3340,3 +3417,69 @@ export const { beat } = register(
   ['beat'],
   __beat((x) => x.innerJoin()),
 );
+
+export const _morph = (from, to, by) => {
+  by = Fraction(by);
+  const dur = Fraction(1).div(from.length);
+  const positions = (list) => {
+    const result = [];
+    for (const [pos, value] of list.entries()) {
+      if (value) {
+        result.push([Fraction(pos).div(list.length), value]);
+      }
+    }
+    return result;
+  };
+  const arcs = zipWith(
+    ([posa, valuea], [posb, valueb]) => {
+      const b = by.mul(posb - posa).add(posa);
+      const e = b.add(dur);
+      return new TimeSpan(b, e);
+    },
+    positions(from),
+    positions(to),
+  );
+  function query(state) {
+    const cycle = state.span.begin.sam();
+    const cycleArc = state.span.cycleArc();
+    const result = [];
+    for (const whole of arcs) {
+      const part = whole.intersection(cycleArc);
+      if (part !== undefined) {
+        result.push(
+          new Hap(
+            whole.withTime((x) => x.add(cycle)),
+            part.withTime((x) => x.add(cycle)),
+            true,
+          ),
+        );
+      }
+    }
+    return result;
+  }
+  return new Pattern(query).splitQueries();
+};
+
+/**
+ * Takes two binary rhythms represented as lists of 1s and 0s, and a number
+ * between 0 and 1 that morphs between them. The two lists should contain the same
+ * number of true values.
+ * @example
+ * sound("hh").struct(morph([1,0,1,0,1,0,1,0], // straight rhythm
+ *                          [1,1,0,1,0,1,0], // wonky rhythm
+ *                          0.25 // creates a slightly wonky rhythm
+ *                         )
+ *                   )
+ * @example
+ * sound("hh").struct(morph("1:0:1:0:1:0:1:0", // straight rhythm
+ *                          "1:1:0:1:0:1:0", // wonky rhythm
+ *                          sine.slow(8) // slowly morph between the rhythms
+ *                         )
+ *                   )
+ */
+export const morph = (frompat, topat, bypat) => {
+  frompat = reify(frompat);
+  topat = reify(topat);
+  bypat = reify(bypat);
+  return frompat.innerBind((from) => topat.innerBind((to) => bypat.innerBind((by) => _morph(from, to, by))));
+};

packages/core/repl.mjs

@@ -1,7 +1,7 @@
 import { NeoCyclist } from './neocyclist.mjs';
 import { Cyclist } from './cyclist.mjs';
 import { evaluate as _evaluate } from './evaluate.mjs';
-import { logger } from './logger.mjs';
+import { errorLogger, logger } from './logger.mjs';
 import { setTime } from './time.mjs';
 import { evalScope } from './evaluate.mjs';
 import { register, Pattern, isPattern, silence, stack } from './pattern.mjs';
@@ -21,6 +21,7 @@ export function repl({
   setInterval,
   clearInterval,
   id,
+  mondo = false,
 }) {
   const state = {
     schedulerError: undefined,
@@ -85,6 +86,17 @@ export function repl({
   const pause = () => scheduler.pause();
   const toggle = () => scheduler.toggle();
   const setCps = (cps) => scheduler.setCps(cps);
+
+  /**
+   * Changes the global tempo to the given cycles per minute
+   *
+   * @name setcpm
+   * @alias setCpm
+   * @param {number} cpm cycles per minute
+   * @example
+   * setcpm(140/4) // =140 bpm in 4/4
+   * $: s("bd*4,[- sd]*2").bank('tr707')
+   */
   const setCpm = (cpm) => scheduler.setCps(cpm / 60);
 
   // TODO - not documented as jsdoc examples as the test framework doesn't simulate enough context for `each` and `all`..
@@ -102,8 +114,9 @@ export function repl({
    * all(x => x.pianoroll())
    * ```
    */
+  let allTransforms = [];
   const all = function (transform) {
-    allTransform = transform;
+    allTransforms.push(transform);
     return silence;
   };
   /** Applies a function to each of the running patterns separately. This is intended for future use with upcoming 'stepwise' features. See `all` for a version that applies the function to all the patterns stacked together into a single pattern.
@@ -179,7 +192,12 @@ export function repl({
       await injectPatternMethods();
       setTime(() => scheduler.now()); // TODO: refactor?
       await beforeEval?.({ code });
+      allTransforms = []; // reset all transforms
       shouldHush && hush();
+
+      if (mondo) {
+        code = `mondolang\`${code}\``;
+      }
       let { pattern, meta } = await _evaluate(code, transpiler, transpilerOptions);
       if (Object.keys(pPatterns).length) {
         let patterns = Object.values(pPatterns);
@@ -191,8 +209,10 @@ export function repl({
       } else if (eachTransform) {
         pattern = eachTransform(pattern);
       }
-      if (allTransform) {
-        pattern = allTransform(pattern);
+      if (allTransforms.length) {
+        for (let i in allTransforms) {
+          pattern = allTransforms[i](pattern);
+        }
       }
       if (!isPattern(pattern)) {
         const message = `got "${typeof evaluated}" instead of pattern`;
@@ -225,6 +245,7 @@ export function repl({
 export const getTrigger =
   ({ getTime, defaultOutput }) =>
   async (hap, deadline, duration, cps, t) => {
+    //   ^ this signature is different from hap.context.onTrigger, as set by Pattern.onTrigger(onTrigger)
     // TODO: get rid of deadline after https://codeberg.org/uzu/strudel/pulls/1004
     try {
       if (!hap.context.onTrigger || !hap.context.dominantTrigger) {
@@ -232,9 +253,9 @@ export const getTrigger =
       }
       if (hap.context.onTrigger) {
         // call signature of output / onTrigger is different...
-        await hap.context.onTrigger(getTime() + deadline, hap, getTime(), cps, t);
+        await hap.context.onTrigger(hap, getTime(), cps, t);
       }
     } catch (err) {
-      logger(`[cyclist] error: ${err.message}`, 'error');
+      errorLogger(err, 'getTrigger');
     }
   };

packages/core/signal.mjs

@@ -71,7 +71,6 @@ export const sine2 = signal((t) => Math.sin(Math.PI * 2 * t));
 
 /**
  *  A sine signal between 0 and 1.
- *
  * @return {Pattern}
  * @example
  * n(sine.segment(16).range(0,15))
@@ -100,7 +99,6 @@ export const cosine2 = sine2._early(Fraction(1).div(4));
 
 /**
  *  A square signal between 0 and 1.
- *
  * @return {Pattern}
  * @example
  * n(square.segment(4).range(0,7)).scale("C:minor")
@@ -266,7 +264,7 @@ export const randrun = (n) => {
     const rands = timeToRands(t.floor().add(0.5), n);
     const nums = rands
       .map((n, i) => [n, i])
-      .sort((a, b) => a[0] > b[0] - a[0] < b[0])
+      .sort((a, b) => (a[0] > b[0]) - (a[0] < b[0]))
       .map((x) => x[1]);
     const i = t.cyclePos().mul(n).floor() % n;
     return nums[i];
@@ -285,7 +283,7 @@ const _rearrangeWith = (ipat, n, pat) => {
  * @example
  * note("c d e f").sound("piano").shuffle(4)
  * @example
- * note("c d e f".shuffle(4), "g").sound("piano")
+ * seq("c d e f".shuffle(4), "g").note().sound("piano")
  */
 export const shuffle = register('shuffle', (n, pat) => {
   return _rearrangeWith(randrun(n), n, pat);
@@ -298,7 +296,7 @@ export const shuffle = register('shuffle', (n, pat) => {
  * @example
  * note("c d e f").sound("piano").scramble(4)
  * @example
- * note("c d e f".scramble(4), "g").sound("piano")
+ * seq("c d e f".scramble(4), "g").note().sound("piano")
  */
 export const scramble = register('scramble', (n, pat) => {
   return _rearrangeWith(_irand(n)._segment(n), n, pat);
@@ -398,6 +396,10 @@ export const chooseInWith = (pat, xs) => {
  */
 export const choose = (...xs) => chooseWith(rand, xs);
 
+// todo: doc
+export const chooseIn = (...xs) => chooseInWith(rand, xs);
+export const chooseOut = choose;
+
 /**
  * Chooses from the given list of values (or patterns of values), according
  * to the pattern that the method is called on. The pattern should be in

packages/core/speak.mjs

@@ -32,7 +32,7 @@ function triggerSpeech(words, lang, voice) {
 }
 
 export const speak = register('speak', function (lang, voice, pat) {
-  return pat.onTrigger((_, hap) => {
+  return pat.onTrigger((hap) => {
     triggerSpeech(hap.value, lang, voice);
   });
 });

packages/core/test/controls.test.mjs

@@ -1,6 +1,6 @@
 /*
 controls.test.mjs - <short description TODO>
-Copyright (C) 2023 Strudel contributors - see <https://github.com/tidalcycles/strudel/blob/main/packages/core/test/controls.test.mjs>
+Copyright (C) 2023 Strudel contributors - see <https://codeberg.org/uzu/strudel/src/branch/main/packages/core/test/controls.test.mjs>
 This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Affero General Public License for more details. You should have received a copy of the GNU Affero General Public License along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 

packages/core/test/drawLine.test.mjs

@@ -1,6 +1,6 @@
 /*
 drawLine.test.mjs - <short description TODO>
-Copyright (C) 2022 Strudel contributors - see <https://github.com/tidalcycles/strudel/blob/main/packages/core/test/drawLine.test.mjs>
+Copyright (C) 2022 Strudel contributors - see <https://codeberg.org/uzu/strudel/src/branch/main/packages/core/test/drawLine.test.mjs>
 This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Affero General Public License for more details. You should have received a copy of the GNU Affero General Public License along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 

packages/core/test/fraction.test.mjs

@@ -1,6 +1,6 @@
 /*
 fraction.test.mjs - <short description TODO>
-Copyright (C) 2022 Strudel contributors - see <https://github.com/tidalcycles/strudel/blob/main/packages/core/test/fraction.test.mjs>
+Copyright (C) 2022 Strudel contributors - see <https://codeberg.org/uzu/strudel/src/branch/main/packages/core/test/fraction.test.mjs>
 This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Affero General Public License for more details. You should have received a copy of the GNU Affero General Public License along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 

packages/core/test/pattern.test.mjs

@@ -1,12 +1,12 @@
 /*
 pattern.test.mjs - <short description TODO>
-Copyright (C) 2022 Strudel contributors - see <https://github.com/tidalcycles/strudel/blob/main/packages/core/test/pattern.test.mjs>
+Copyright (C) 2022 Strudel contributors - see <https://codeberg.org/uzu/strudel/src/branch/main/packages/core/test/pattern.test.mjs>
 This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Affero General Public License for more details. You should have received a copy of the GNU Affero General Public License along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 import Fraction from 'fraction.js';
 
-import { describe, it, expect } from 'vitest';
+import { describe, it, expect, vi } from 'vitest';
 
 import {
   TimeSpan,
@@ -52,8 +52,11 @@ import {
   stackCentre,
   stepcat,
   sometimes,
+  expand,
 } from '../index.mjs';
 
+import { log, logValues } from '../pattern.mjs';
+
 import { steady } from '../signal.mjs';
 
 import { n, s } from '../controls.mjs';
@@ -884,7 +887,7 @@ describe('Pattern', () => {
       );
     });
     it('Doesnt drop haps in the 9th cycle', () => {
-      // fixed with https://github.com/tidalcycles/strudel/commit/72eeaf446e3d5e186d63cc0d2276f0723cde017a
+      // fixed with https://codeberg.org/uzu/strudel/commit/72eeaf446e3d5e186d63cc0d2276f0723cde017a
       expect(sequence(1, 2, 3).ply(2).early(8).firstCycle().length).toBe(6);
     });
   });
@@ -1001,7 +1004,7 @@ describe('Pattern', () => {
   });
   describe('hurry', () => {
     it('Can speed up patterns and sounds', () => {
-      sameFirst(s('a', 'b').hurry(2), s('a', 'b').fast(2).speed(2));
+      sameFirst(s(sequence('a', 'b')).hurry(2), s(sequence('a', 'b')).fast(2).speed(2));
     });
   });
   /*describe('composable functions', () => {
@@ -1179,6 +1182,9 @@ describe('Pattern', () => {
     it('calculates undefined steps as the average', () => {
       expect(sameFirst(stepcat(pure(1), pure(2), pure(3).setSteps(undefined)), fastcat(1, 2, 3)));
     });
+    it('works with auto-reified values', () => {
+      expect(sameFirst(stepcat(expand(3, 'bd'), 'rim'), stepcat(expand(3, 'bd'), pure('rim'))));
+    });
   });
   describe('shrink', () => {
     it('can shrink', () => {
@@ -1267,4 +1273,75 @@ describe('Pattern', () => {
       );
     });
   });
+  describe('unjoin', () => {
+    it('destructures a pattern into subcycles', () => {
+      sameFirst(
+        fastcat('a', 'b', 'c', 'd')
+          .unjoin(fastcat(true, fastcat(true, true)))
+          .fmap(fast(2))
+          .join(),
+        fastcat('a', 'b', 'a', 'b', 'c', 'c', 'd', 'd'),
+      );
+    });
+  });
+  describe('into', () => {
+    it('applies a function to subcycles of a pattern', () => {
+      sameFirst(
+        fastcat('a', 'b', 'c', 'd').into(fastcat(fastcat('true', 'true'), 'true'), fast(2)),
+        fastcat('a', 'a', 'b', 'b', 'c', 'd', 'c', 'd'),
+      );
+    });
+  });
+  describe('chunkinto', () => {
+    it('chunks into subcycles', () => {
+      sameFirst(
+        fastcat('a', 'b', 'c').chunkInto(3, fast(2)).fast(3),
+        fastcat(fastcat('a', 'a'), 'b', 'c', 'a', fastcat('b', 'b'), 'c', 'a', 'b', fastcat('c', 'c')),
+      );
+    });
+  });
+  describe('chunkbackinto', () => {
+    it('chunks into subcycles backwards', () => {
+      sameFirst(
+        fastcat('a', 'b', 'c').chunkBackInto(3, fast(2)).fast(3),
+        fastcat('a', 'b', fastcat('c', 'c'), 'a', fastcat('b', 'b'), 'c', fastcat('a', 'a'), 'b', 'c'),
+      );
+    });
+  });
+  describe('log', () => {
+    it('logs to console', () => {
+      const mockConsoleLog = vi.spyOn(console, 'log').mockImplementation(() => {});
+      const pattern = pure('a').log();
+      const haps = pattern.queryArc(0, 1);
+
+      // Force a trigger
+      haps.forEach((hap) => {
+        hap.context?.onTrigger?.(hap);
+      });
+
+      expect(mockConsoleLog).toHaveBeenCalledWith(
+        '%c[hap] 0/1 → 1/1: a',
+        'background-color: black;color:white;border-radius:15px',
+      );
+      mockConsoleLog.mockRestore();
+    });
+  });
+  describe('logValues', () => {
+    it('logs values to console', () => {
+      const mockConsoleLog = vi.spyOn(console, 'log').mockImplementation(() => {});
+      const pattern = pure('a').note('c#').logValues();
+      const haps = pattern.queryArc(0, 1);
+
+      // Force a trigger
+      haps.forEach((hap) => {
+        hap.context?.onTrigger?.(hap);
+      });
+
+      expect(mockConsoleLog).toHaveBeenCalledWith(
+        '%c[hap] value:a note:c#',
+        'background-color: black;color:white;border-radius:15px',
+      );
+      mockConsoleLog.mockRestore();
+    });
+  });
 });

packages/core/test/util.test.mjs

@@ -1,6 +1,6 @@
 /*
 util.test.mjs - Tests for the core 'util' module
-Copyright (C) 2022 Strudel contributors - see <https://github.com/tidalcycles/strudel/blob/main/packages/core/test/util.test.mjs>
+Copyright (C) 2022 Strudel contributors - see <https://codeberg.org/uzu/strudel/src/branch/main/packages/core/test/util.test.mjs>
 This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Affero General Public License for more details. You should have received a copy of the GNU Affero General Public License along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 

packages/core/timespan.mjs

@@ -72,7 +72,7 @@ export class TimeSpan {
   }
 
   intersection(other) {
-    // Intersection of two timespans, returns None if they don't intersect.
+    // Intersection of two timespans, returns undefined if they don't intersect.
     const intersect_begin = this.begin.max(other.begin);
     const intersect_end = this.end.min(other.end);
 

packages/core/util.mjs

@@ -487,3 +487,13 @@ export function getCurrentKeyboardState() {
 //   }
 //   return lcm((x * y) / gcd(x, y), ...z);
 // };
+
+// Takes values -- typically derived from events, i.e. `hap`s -- and renders them
+// into a readable format
+export function stringifyValues(value, compact = false) {
+  return typeof value === 'object'
+    ? compact
+      ? JSON.stringify(value).slice(1, -1).replaceAll('"', '').replaceAll(',', ' ')
+      : JSON.stringify(value)
+    : value;
+}

packages/csound/index.mjs

@@ -23,7 +23,7 @@ export const csound = register('csound', (instrument, pat) => {
   instrument = instrument || 'triangle';
   init(); // not async to support csound inside other patterns + to be able to call pattern methods after it
   // TODO: find a alternative way to wait for csound to load (to wait with first time playback)
-  return pat.onTrigger((time_deprecate, hap, currentTime, _cps, targetTime) => {
+  return pat.onTrigger((hap, currentTime, _cps, targetTime) => {
     if (!_csound) {
       logger('[csound] not loaded yet', 'warning');
       return;
@@ -142,7 +142,7 @@ export const csoundm = register('csoundm', (instrument, pat) => {
     p1 = `"${instrument}"`;
   }
   init(); // not async to support csound inside other patterns + to be able to call pattern methods after it
-  return pat.onTrigger((tidal_time, hap) => {
+  return pat.onTrigger((hap, currentTime, _cps, targetTime) => {
     if (!_csound) {
       logger('[csound] not loaded yet', 'warning');
       return;
@@ -151,7 +151,7 @@ export const csoundm = register('csoundm', (instrument, pat) => {
       throw new Error('csound only support objects as hap values');
     }
     // Time in seconds counting from now.
-    const p2 = tidal_time - getAudioContext().currentTime;
+    const p2 = targetTime - currentTime;
     const p3 = hap.duration.valueOf() + 0;
     const frequency = getFrequency(hap);
     let { gain = 1, velocity = 0.9 } = hap.value;

packages/csound/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@strudel/csound",
-  "version": "1.2.3",
+  "version": "1.2.4",
   "description": "csound bindings for strudel",
   "main": "index.mjs",
   "type": "module",

packages/desktopbridge/midibridge.mjs

@@ -6,7 +6,7 @@ const OFF_MESSAGE = 0x80;
 const CC_MESSAGE = 0xb0;
 
 Pattern.prototype.midi = function (output) {
-  return this.onTrigger((time_deprecate, hap, currentTime, cps, targetTime) => {
+  return this.onTrigger((hap, currentTime, cps, targetTime) => {
     let { note, nrpnn, nrpv, ccn, ccv, velocity = 0.9, gain = 1 } = hap.value;
     //magic number to get audio engine to line up, can probably be calculated somehow
     const latencyMs = 34;

packages/desktopbridge/oscbridge.mjs

@@ -4,7 +4,7 @@ import { Invoke } from './utils.mjs';
 
 const collator = new ClockCollator({});
 
-export async function oscTriggerTauri(t_deprecate, hap, currentTime, cps = 1, targetTime) {
+export async function oscTriggerTauri(hap, currentTime, cps = 1, targetTime) {
   const controls = parseControlsFromHap(hap, cps);
   const params = [];
   const timestamp = collator.calculateTimestamp(currentTime, targetTime);

packages/draw/draw.mjs

@@ -150,7 +150,7 @@ export class Drawer {
         this.lastFrame = phase;
         this.visibleHaps = (this.visibleHaps || [])
           // filter out haps that are too far in the past (think left edge of screen for pianoroll)
-          .filter((h) => h.endClipped >= phase - lookbehind - lookahead)
+          .filter((h) => h.whole && h.endClipped >= phase - lookbehind - lookahead)
           // add new haps with onset (think right edge bars scrolling in)
           .concat(haps.filter((h) => h.hasOnset()));
         const time = phase - lookahead;
@@ -175,7 +175,7 @@ export class Drawer {
     // +0.1 = workaround for weird holes in query..
     const [begin, end] = [Math.max(t, 0), t + lookahead + 0.1];
     // remove all future haps
-    this.visibleHaps = this.visibleHaps.filter((h) => h.whole.begin < t);
+    this.visibleHaps = this.visibleHaps.filter((h) => h.whole?.begin < t);
     this.painters = []; // will get populated by .onPaint calls attached to the pattern
     // query future haps
     const futureHaps = scheduler.pattern.queryArc(begin, end, { painters: this.painters });

packages/draw/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@strudel/draw",
-  "version": "1.2.2",
+  "version": "1.2.3",
   "description": "Helpers for drawing with Strudel",
   "main": "index.mjs",
   "type": "module",

packages/embed/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@strudel/embed",
-  "version": "1.1.0",
+  "version": "1.1.1",
   "description": "Embeddable Web Component to load a Strudel REPL into an iframe",
   "main": "embed.js",
   "type": "module",

packages/gamepad/docs/gamepad.mdx

@@ -56,14 +56,15 @@ You can use button inputs to control different aspects of your music, such as ga
 <MiniRepl
   client:idle
   tune={`const gp = gamepad(0)
-  // Use button values to control amplitude
+setcpm(120) 
+// Use button values to control amplitude
 $: stack(
   s("[[hh hh] oh hh oh]/2").mask(gp.tglX).bank("RolandTR909"), // X btn for HH
    s("cr*1").mask(gp.Y).bank("RolandTR909"), // LB btn for CR
   s("bd").mask(gp.tglA).bank("RolandTR909"), // A btn for BD
   s("[ht - - mt - - lt - ]/2").mask(gp.tglB).bank("RolandTR909"), // B btn for Toms
   s("sd*4").mask(gp.RB).bank("RolandTR909"), // RB btn for SD
-).cpm(120)
+)
 `}
 />
 
@@ -74,14 +75,13 @@ Analog sticks can be used for continuous control, such as pitch shifting or pann
 <MiniRepl
   client:idle
   tune={`const gp = gamepad(0)
-  // Use analog stick for continuous control
+setcpm(120)
+// Use analog stick for continuous control
 $: note("c4 d3 a3 e3").sound("sawtooth") 
   .lpf(gp.x1.range(100,4000)) 
   .lpq(gp.y1.range(5,30))
   .decay(gp.y2.range(0.1,2))
-  .lpenv(gp.x2.range(-5,5))
-  .cpm(120)
-  `}
+  .lpenv(gp.x2.range(-5,5))`}
 />
 
 ### Button Sequences
@@ -89,6 +89,7 @@ $: note("c4 d3 a3 e3").sound("sawtooth")
 You can define button sequences to trigger specific actions, like playing a sound when a sequence is detected.
 
 <MiniRepl client:idle tune={`const gp = gamepad(0)
+setcpm(120)
 // Define button sequences
 const HADOUKEN = [
   'd',               // Down
@@ -99,7 +100,7 @@ const KONAMI = 'uuddlrlrba' //Konami Code ↑↑↓↓←→←→BA
 
 // Check butto-n sequence (returns 1 while detected, 0 when not within last 1 second)
 $: s("free_hadouken -").slow(2)
-.mask(gp.btnSequence(HADOUKEN)).room(1).cpm(120)
+.mask(gp.btnSequence(HADOUKEN)).room(1)
 
 // hadouken.wav by Syna-Max
 //https://freesound.org/people/Syna-Max/sounds/67674/

packages/gamepad/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@strudel/gamepad",
-  "version": "1.2.2",
+  "version": "1.2.3",
   "description": "Gamepad Inputs for strudel",
   "main": "index.mjs",
   "type": "module",

packages/hydra/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@strudel/hydra",
-  "version": "1.2.2",
+  "version": "1.2.3",
   "description": "Hydra integration for strudel",
   "main": "hydra.mjs",
   "type": "module",

packages/midi/midi.mjs

@@ -333,7 +333,7 @@ Pattern.prototype.midi = function (midiport, options = {}) {
       logger(`Midi device disconnected! Available: ${getMidiDeviceNamesString(outputs)}`),
   });
 
-  return this.onTrigger((time_deprecate, hap, currentTime, cps, targetTime) => {
+  return this.onTrigger((hap, currentTime, cps, targetTime) => {
     if (!WebMidi.enabled) {
       logger('Midi not enabled');
       return;

packages/midi/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@strudel/midi",
-  "version": "1.2.3",
+  "version": "1.2.4",
   "description": "Midi API for strudel",
   "main": "index.mjs",
   "type": "module",

packages/mini/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@strudel/mini",
-  "version": "1.2.2",
+  "version": "1.2.3",
   "description": "Mini notation for strudel",
   "main": "index.mjs",
   "type": "module",

packages/mini/test/mini.test.mjs

@@ -1,6 +1,6 @@
 /*
 mini.test.mjs - <short description TODO>
-Copyright (C) 2022 Strudel contributors - see <https://github.com/tidalcycles/strudel/blob/main/packages/mini/test/mini.test.mjs>
+Copyright (C) 2022 Strudel contributors - see <https://codeberg.org/uzu/strudel/src/branch/main/packages/mini/test/mini.test.mjs>
 This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Affero General Public License for more details. You should have received a copy of the GNU Affero General Public License along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 

packages/mondo/README.md

@@ -0,0 +1,39 @@
+# mondo
+
+a lisp-based language intended to be used as a custom dsl for patterns that can stand on its own feet. 
+see the `test` folder for usage examples
+
+more info:
+
+- [uzulang I](https://garten.salat.dev/uzu/uzulang1.html)
+- [uzulang II](https://garten.salat.dev/uzu/uzulang2.html)
+
+## Example Usage
+
+```js
+import { MondoRunner } from 'mondolang'
+// define our library of functions and variables
+let lib = {
+  add: (a, b) => a + b,
+  mul: (a, b) => a * b,
+  PI: Math.PI,
+};
+// this function will evaluate nodes in the syntax tree
+function evaluator(node) {
+  // check if node is a leaf node (!= list)
+  if (node.type !== 'list') {
+    // check lib if we find a match in the lib, otherwise return value
+    return lib[node.value] ?? node.value;
+  }
+  // now it can only be a list..
+  const [fn, ...args] = node.children;
+  // children in a list will already be evaluated
+  // the first child is expected to be a function
+  if (typeof fn !== 'function') {
+    throw new Error(`"${fn}" is not a function`);
+  }
+  return fn(...args);
+}
+const runner = new MondoRunner({ evaluator });
+const pat = runner.run('add 1 (mul 2 PI)') // 7.283185307179586
+```

packages/mondo/mondo.mjs

@@ -0,0 +1,484 @@
+/*
+mondo.mjs - <short description TODO>
+Copyright (C) 2022 Strudel contributors - see <https://github.com/tidalcycles/strudel/blob/main/packages/mini/test/mini.test.mjs>
+This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Affero General Public License for more details. You should have received a copy of the GNU Affero General Public License along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+
+// evolved from https://garten.salat.dev/lisp/parser.html
+export class MondoParser {
+  // these are the tokens we expect
+  token_types = {
+    comment: /^\/\/(.*?)(?=\n|$)/,
+    quotes_double: /^"(.*?)"/,
+    quotes_single: /^'(.*?)'/,
+    open_list: /^\(/,
+    close_list: /^\)/,
+    open_angle: /^</,
+    close_angle: /^>/,
+    open_square: /^\[/,
+    close_square: /^\]/,
+    open_curly: /^\{/,
+    close_curly: /^\}/,
+    number: /^-?[0-9]*\.?[0-9]+/, // before pipe!
+    // TODO: better error handling when "-" is used as rest, e.g "s [- bd]"
+    op: /^[*/:!@%?+-]|^\.{2}/, // * / : ! @ % ? ..
+    // dollar: /^\$/,
+    pipe: /^#/,
+    stack: /^[,$]/,
+    or: /^[|]/,
+    plain: /^[a-zA-Z0-9-~_^#]+/,
+  };
+  // matches next token
+  next_token(code, offset = 0) {
+    for (let type in this.token_types) {
+      const match = code.match(this.token_types[type]);
+      if (match) {
+        let token = { type, value: match[0] };
+        if (offset !== -1) {
+          // add location
+          token.loc = [offset, offset + match[0].length];
+        }
+        return token;
+      }
+    }
+    throw new Error(`mondo: could not match '${code}'`);
+  }
+  // takes code string, returns list of matched tokens (if valid)
+  tokenize(code, offset = 0) {
+    let tokens = [];
+    let locEnabled = offset !== -1;
+    let trim = () => {
+      // trim whitespace at start, update offset
+      offset += code.length - code.trimStart().length;
+      // trim start and end to not confuse parser
+      return code.trim();
+    };
+    code = trim();
+    while (code.length > 0) {
+      code = trim();
+      const token = this.next_token(code, locEnabled ? offset : -1);
+      code = code.slice(token.value.length);
+      offset += token.value.length;
+      tokens.push(token);
+    }
+    return tokens;
+  }
+  // take code, return abstract syntax tree
+  parse(code, offset) {
+    this.code = code;
+    this.offset = offset;
+    this.tokens = this.tokenize(code, offset);
+    const expressions = [];
+    while (this.tokens.length) {
+      expressions.push(this.parse_expr());
+    }
+    if (expressions.length === 0) {
+      // empty case
+      return { type: 'list', children: [] };
+    }
+    // do we have multiple top level expressions or a single non list?
+    if (expressions.length > 1 || expressions[0].type !== 'list') {
+      return {
+        type: 'list',
+        children: this.desugar(expressions),
+      };
+    }
+    // we have a single list
+    return expressions[0];
+  }
+  // parses any valid expression
+  parse_expr() {
+    if (!this.tokens[0]) {
+      throw new Error(`unexpected end of file`);
+      // TODO: could we allow that? like (((((((( s bd
+      // return { type: 'list', children: [] };
+    }
+    let next = this.tokens[0]?.type;
+    if (next === 'open_list') {
+      return this.parse_list();
+    }
+    if (next === 'open_angle') {
+      return this.parse_angle();
+    }
+    if (next === 'open_square') {
+      return this.parse_square();
+    }
+    if (next === 'open_curly') {
+      return this.parse_curly();
+    }
+    return this.consume(next);
+  }
+  // Token[] => Token[][], e.g. (x , y z) => [['x'],['y','z']]
+  split_children(children, split_type) {
+    const chunks = [];
+    while (true) {
+      let splitIndex = children.findIndex((child) => child.type === split_type);
+      if (splitIndex === -1) break;
+      const chunk = children.slice(0, splitIndex);
+      chunks.push(chunk);
+      children = children.slice(splitIndex + 1);
+    }
+    chunks.push(children);
+    return chunks;
+  }
+  desugar_split(children, split_type, next) {
+    const chunks = this.split_children(children, split_type);
+    if (chunks.length === 1) {
+      return next(children);
+    }
+    // collect args of stack function
+    const args = chunks
+      .map((chunk) => {
+        if (!chunk.length) {
+          return; // useful for things like "$ s bd $ s hh*8" (first chunk is empty)
+        }
+        if (chunk.length === 1) {
+          // chunks of one element can be added to the stack as is
+          return chunk[0];
+        }
+        // chunks of multiple args
+        chunk = next(chunk);
+        return { type: 'list', children: chunk };
+      })
+      .filter(Boolean); // ignore empty chunks
+    return [{ type: 'plain', value: split_type }, ...args];
+  }
+  // prevents to get a list, e.g. ((x y)) => (x y)
+  unwrap_children(children) {
+    if (children.length === 1) {
+      return children[0].children;
+    }
+    return children;
+  }
+  desugar_ops(children) {
+    while (true) {
+      let opIndex = children.findIndex((child) => child.type === 'op');
+      if (opIndex === -1) break;
+      const op = { type: 'plain', value: children[opIndex].value };
+      if (opIndex === children.length - 1) {
+        //throw new Error(`cannot use operator as last child.`);
+        children[opIndex] = op; // ignore operator if last child.. e.g. "note [c -]"
+        continue;
+      }
+      if (opIndex === 0) {
+        // regular function call (assuming each operator exists as function)
+        children[opIndex] = op;
+        continue;
+      }
+      // convert infix to prefix notation
+      const left = children[opIndex - 1];
+      const right = children[opIndex + 1];
+      if (left.type === 'pipe') {
+        // "x !* 2" => (* 2 x)
+        children[opIndex] = op;
+        continue;
+      }
+      // some careful error handling
+      if (left.type === 'op') {
+        throw new Error(`got 2 ops in a row: "${left.value}${op.value}"`);
+      }
+      if (right.type === 'op') {
+        let err = `got 2 ops in a row: "${op.value}${right.value}"`;
+        if (op.value === '-') {
+          // yes i know this file is not supposed to know about rests x.X
+          err += '. you probably want a rest, which is "_" in mondo!';
+        }
+        throw new Error(err);
+      }
+      const call = { type: 'list', children: [op, right, left] };
+      // insert call while keeping other siblings
+      children = [...children.slice(0, opIndex - 1), call, ...children.slice(opIndex + 2)];
+      children = this.unwrap_children(children);
+    }
+    return children;
+  }
+  get_lambda(args, children) {
+    // (.fast 2) = (fn (_) (fast _ 2))
+    children = this.desugar(children);
+    const body = children.length === 1 ? children[0] : { type: 'list', children };
+    return [{ type: 'plain', value: 'fn' }, { type: 'list', children: args }, body];
+  }
+  // returns location range of given ast (even if desugared)
+  get_range(ast, range = [Infinity, 0]) {
+    let union = (a, b) => [Math.min(a[0], b[0]), Math.max(a[1], b[1])];
+    if (ast.loc) {
+      return union(range, ast.loc);
+    }
+    if (ast.type !== 'list') {
+      return range;
+    }
+    return ast.children.reduce((range, child) => {
+      const childrange = this.get_range(child, range);
+      return union(range, childrange);
+    }, range);
+  }
+  errorhead(ast) {
+    return `[mondo ${this.get_range(ast)?.join(':') || '?'}]`;
+  }
+  // returns original user code where the given ast originates (even if desugared)
+  get_code_snippet(ast) {
+    const [min, max] = this.get_range(ast);
+    return this.code.slice(min - this.offset, max - this.offset);
+  }
+  desugar_pipes(children) {
+    let chunks = this.split_children(children, 'pipe');
+    while (chunks.length > 1) {
+      let [left, right, ...rest] = chunks;
+
+      if (!left.length) {
+        const arg = { type: 'plain', value: '_' };
+        return this.get_lambda([arg], [arg, ...children]);
+      }
+      // s jazz hh.fast 2 => (fast 2 (s jazz hh))
+      const call = left.length > 1 ? { type: 'list', children: left } : left[0];
+      chunks = [[...right, call], ...rest];
+    }
+    // return next(chunks[0]);
+    return chunks[0];
+  }
+  parse_pair(open_type, close_type) {
+    const begin = this.tokens[0].loc?.[0];
+    this.consume(open_type);
+    const children = [];
+    while (this.tokens[0]?.type !== close_type) {
+      children.push(this.parse_expr());
+    }
+    const end = this.tokens[0].loc?.[1];
+    this.consume(close_type);
+    const node = { type: 'list', children };
+    if (begin !== undefined) {
+      node.loc = [begin, end];
+      node.raw = this.code.slice(begin, end);
+    }
+    return node;
+  }
+  desugar(children, type) {
+    // if type is given, the first element is expected to contain it as plain value
+    // e.g. with (square a b, c), we want to split (a b, c) and ignore "square"
+    children = type ? children.slice(1) : children;
+    children = this.desugar_split(children, 'stack', (children) =>
+      this.desugar_split(children, 'or', (children) => {
+        // chunks of multiple args
+        if (type) {
+          // the type we've removed before splitting needs to be added back
+          children = [{ type: 'plain', value: type }, ...children];
+        }
+        children = this.desugar_ops(children);
+        // children = this.desugar_pipes(children, (children) => this.desugar_dollars(children));
+        children = this.desugar_pipes(children);
+        return children;
+      }),
+    );
+    return children;
+  }
+  parse_list() {
+    let node = this.parse_pair('open_list', 'close_list');
+    node.children = this.desugar(node.children);
+    return node;
+  }
+  parse_angle() {
+    let node = this.parse_pair('open_angle', 'close_angle');
+    node.children.unshift({ type: 'plain', value: 'angle' });
+    node.children = this.desugar(node.children, 'angle');
+    return node;
+  }
+  parse_square() {
+    let node = this.parse_pair('open_square', 'close_square');
+    node.children.unshift({ type: 'plain', value: 'square' });
+    node.children = this.desugar(node.children, 'square');
+    return node;
+  }
+  parse_curly() {
+    let node = this.parse_pair('open_curly', 'close_curly');
+    node.children.unshift({ type: 'plain', value: 'curly' });
+    node.children = this.desugar(node.children, 'curly');
+    return node;
+  }
+  consume(type) {
+    // shift removes first element and returns it
+    const token = this.tokens.shift();
+    if (token.type !== type) {
+      throw new Error(`expected token type ${type}, got ${token.type}`);
+    }
+    return token;
+  }
+  get_locations(code, offset = 0) {
+    let walk = (ast, locations = []) => {
+      if (ast.type === 'list') {
+        return ast.children.forEach((child) => walk(child, locations));
+      }
+      if (ast.loc) {
+        locations.push(ast.loc);
+      }
+    };
+    const ast = this.parse(code, offset);
+    let locations = [];
+    walk(ast, locations);
+    return locations;
+  }
+}
+
+export function printAst(ast, compact = false, lvl = 0) {
+  const br = compact ? '' : '\n';
+  const spaces = compact ? '' : Array(lvl).fill(' ').join('');
+  if (ast.type === 'list') {
+    return `${lvl ? br : ''}${spaces}(${ast.children.map((child) => printAst(child, compact, lvl + 1)).join(' ')}${
+      ast.children.find((child) => child.type === 'list') ? `${br}${spaces})` : ')'
+    }`;
+  }
+  return `${ast.value}`;
+}
+
+// lisp runner
+export class MondoRunner {
+  constructor({ evaluator } = {}) {
+    this.parser = new MondoParser();
+    this.evaluator = evaluator;
+    this.assert(typeof evaluator === 'function', `expected an evaluator function to be passed to new MondoRunner`);
+  }
+  // a helper to check conditions and throw if they are not met
+  assert(condition, error) {
+    if (!condition) {
+      throw new Error(error);
+    }
+  }
+  run(code, scope, offset = 0) {
+    const ast = this.parser.parse(code, offset);
+    //console.log(printAst(ast));
+    return this.evaluate(ast, scope);
+  }
+  evaluate_let(ast, scope) {
+    // (let ((x 3) (y 4)) ...body)
+    // = ((fn (x y) ...body) 3 4)
+    const defs = ast.children[1].children;
+    const args = defs.map((pair) => pair.children[0]);
+    const vals = defs.map((pair) => pair.children[1]);
+    const body = ast.children.slice(2);
+    const lambda = {
+      type: 'list',
+      children: [{ type: 'plain', value: 'fn' }, { type: 'list', children: args }, ...body],
+    };
+    return this.evaluate({ type: 'list', children: [lambda, ...vals] }, scope);
+  }
+  evaluate_def(ast, scope) {
+    // function definition special form?
+    if (ast.children[1].type === 'list') {
+      // (def (add a b) (+ a b))
+      // => (def add (fn (a b) (+ a b)) )
+      const args = ast.children[1].children.slice(1);
+      const lambda = {
+        // lambda
+        type: 'list',
+        children: [
+          { type: 'plain', value: 'fn' },
+          { type: 'list', children: args },
+          ...ast.children.slice(2), // body
+        ],
+      };
+      // we mutate to make sure the old ast wont make a mess later
+      ast.children[1] = ast.children[1].children[0];
+      ast.children[2] = lambda;
+      ast.children = ast.children.slice(0, 3); // throw away rest
+    }
+    // (def name body)
+    if (ast.children.length !== 3) {
+      throw new Error(`expected "def" to have 3 children, but got ${ast.children.length}`);
+    }
+    const name = ast.children[1].value;
+    const body = this.evaluate(ast.children[2], scope);
+    scope[name] = body;
+    // def with fall through
+  }
+  evaluate_match(ast, scope) {
+    // (match (p1 e1) (p2 e2) ... (pn en))
+    // = cond in lisp
+    if (ast.children.length < 2) {
+      return;
+    }
+    const [_, ...body] = ast.children;
+    for (let i = 0; i < body.length; ++i) {
+      const [predicate, exp] = body[i].children;
+      if (predicate.value === 'else') {
+        return this.evaluate(exp, scope);
+      }
+      const outcome = this.evaluate(predicate, scope);
+      if (outcome) {
+        return this.evaluate(exp, scope);
+      }
+    }
+    return undefined; // nothing was matched
+  }
+  evaluate_if(ast, scope) {
+    // if is a special case of match
+    if (ast.children.length !== 4) {
+      return;
+    }
+    // (if predicate consequent alternative)
+    const [_, predicate, consequent, alternative] = ast.children;
+    // (match (predicate consequent) (else alternative))
+    const matcher = {
+      type: 'list',
+      children: [
+        { type: 'plain', value: 'match' },
+        { type: 'list', children: [predicate, consequent] },
+        { type: 'list', children: [{ type: 'plain', value: 'else' }, alternative] },
+      ],
+    };
+    return this.evaluate_match(matcher, scope);
+  }
+  evaluate_lambda(ast, scope) {
+    // (fn (_)   (ply 2 _)
+    //     ^args ^ body
+    const [_, formalArgs, ...body] = ast.children;
+    return (...args) => {
+      const params = Object.fromEntries(formalArgs.children.map((arg, i) => [arg.value, args[i]]));
+      const closure = {
+        ...scope,
+        ...params,
+      };
+      // body can have multiple expressions
+      const res = body.map((exp) => this.evaluate(exp, closure));
+      // last expression is the return value
+      return res[res.length - 1];
+    };
+  }
+  evaluate_list(ast, scope) {
+    // evaluate all children before evaluating list (dont mutate!!!)
+    const args = ast.children
+      .filter((child) => child.type !== 'comment') // ignore comments
+      .map((arg) => this.evaluate(arg, scope));
+    const node = { type: 'list', children: args };
+    return this.evaluator(node, scope);
+  }
+  evaluate_leaf(ast, scope) {
+    if (ast.type === 'number') {
+      ast.value = Number(ast.value);
+    } else if (['quotes_double', 'quotes_single'].includes(ast.type)) {
+      ast.value = ast.value.slice(1, -1);
+      ast.type = 'string';
+    }
+    return this.evaluator(ast, scope);
+  }
+  evaluate(ast, scope = {}) {
+    if (ast.type !== 'list') {
+      return this.evaluate_leaf(ast, scope);
+    }
+    const name = ast.children[0]?.value;
+    if (name === 'fn') {
+      return this.evaluate_lambda(ast, scope);
+    }
+    if (name === 'match') {
+      return this.evaluate_match(ast, scope);
+    }
+    if (name === 'if') {
+      return this.evaluate_if(ast, scope);
+    }
+    if (name === 'let') {
+      return this.evaluate_let(ast, scope);
+    }
+    if (name === 'def') {
+      this.evaluate_def(ast, scope);
+    }
+    return this.evaluate_list(ast, scope);
+  }
+}

packages/mondo/package.json

@@ -0,0 +1,37 @@
+{
+  "name": "mondolang",
+  "version": "1.1.1",
+  "description": "a language for functional composition that translates to js",
+  "main": "mondo.mjs",
+  "type": "module",
+  "publishConfig": {
+    "main": "dist/mondo.mjs"
+  },
+  "scripts": {
+    "test": "vitest run",
+    "bench": "vitest bench",
+    "build": "vite build",
+    "prepublishOnly": "npm run build"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/tidalcycles/strudel.git"
+  },
+  "keywords": [
+    "tidalcycles",
+    "strudel",
+    "pattern",
+    "livecoding",
+    "algorave"
+  ],
+  "author": "Felix Roos <flix91@gmail.com>",
+  "license": "AGPL-3.0-or-later",
+  "bugs": {
+    "url": "https://github.com/tidalcycles/strudel/issues"
+  },
+  "homepage": "https://github.com/tidalcycles/strudel/blob/main/packages/mondo/README.md",
+  "devDependencies": {
+    "vite": "^6.0.11",
+    "vitest": "^3.0.4"
+  }
+}

packages/mondo/test/mondo.test.mjs

@@ -0,0 +1,978 @@
+/*
+mondo.test.mjs - <short description TODO>
+Copyright (C) 2022 Strudel contributors - see <https://github.com/tidalcycles/strudel/blob/main/packages/mini/test/mini.test.mjs>
+This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Affero General Public License for more details. You should have received a copy of the GNU Affero General Public License along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+
+import { describe, expect, it } from 'vitest';
+import { MondoParser, printAst, MondoRunner } from '../mondo.mjs';
+
+const parser = new MondoParser();
+const p = (code) => parser.parse(code, -1);
+
+describe('mondo tokenizer', () => {
+  const parser = new MondoParser();
+  it('should tokenize with locations', () =>
+    expect(
+      parser
+        .tokenize('(one two three)')
+        .map((t) => t.value + '=' + t.loc.join('-'))
+        .join(' '),
+    ).toEqual('(=0-1 one=1-4 two=5-8 three=9-14 )=14-15'));
+  // it('should parse with loangleions', () => expect(parser.parse('(one two three)')).toEqual());
+  it('should get loangleions', () =>
+    expect(parser.get_locations('s bd rim')).toEqual([
+      [0, 1],
+      [2, 4],
+      [5, 8],
+    ]));
+});
+describe('mondo s-expressions parser', () => {
+  it('should parse an empty string', () => expect(p('')).toEqual({ type: 'list', children: [] }));
+  it('should parse a single item', () =>
+    expect(p('a')).toEqual({ type: 'list', children: [{ type: 'plain', value: 'a' }] }));
+  it('should parse an empty list', () => expect(p('()')).toEqual({ type: 'list', children: [] }));
+  it('should parse a list with 1 item', () =>
+    expect(p('(a)')).toEqual({ type: 'list', children: [{ type: 'plain', value: 'a' }] }));
+  it('should parse a list with 2 items', () =>
+    expect(p('(a b)')).toEqual({
+      type: 'list',
+      children: [
+        { type: 'plain', value: 'a' },
+        { type: 'plain', value: 'b' },
+      ],
+    }));
+  it('should parse a list with 2 items', () =>
+    expect(p('(a (b c))')).toEqual({
+      type: 'list',
+      children: [
+        { type: 'plain', value: 'a' },
+        {
+          type: 'list',
+          children: [
+            { type: 'plain', value: 'b' },
+            { type: 'plain', value: 'c' },
+          ],
+        },
+      ],
+    }));
+  it('should parse numbers', () =>
+    expect(p('(1 .2 1.2 10 22.3)')).toEqual({
+      type: 'list',
+      children: [
+        { type: 'number', value: '1' },
+        { type: 'number', value: '.2' },
+        { type: 'number', value: '1.2' },
+        { type: 'number', value: '10' },
+        { type: 'number', value: '22.3' },
+      ],
+    }));
+  it('should parse comments', () =>
+    expect(p('a // hello')).toEqual({
+      type: 'list',
+      children: [
+        { type: 'plain', value: 'a' },
+        { type: 'comment', value: '// hello' },
+      ],
+    }));
+});
+
+let desguar = (a) => {
+  return printAst(parser.parse(a), true);
+};
+
+describe('mondo sugar', () => {
+  it('should desugar []', () => expect(desguar('[a b c]')).toEqual('(square a b c)'));
+  it('should desugar [] nested', () => expect(desguar('[a [b c] d]')).toEqual('(square a (square b c) d)'));
+  it('should desugar <>', () => expect(desguar('<a b c>')).toEqual('(angle a b c)'));
+  it('should desugar <> nested', () => expect(desguar('<a <b c> d>')).toEqual('(angle a (angle b c) d)'));
+  it('should desugar mixed [] <>', () => expect(desguar('[a <b c>]')).toEqual('(square a (angle b c))'));
+  it('should desugar mixed <> []', () => expect(desguar('<a [b c]>')).toEqual('(angle a (square b c))'));
+
+  it('should desugar #', () => expect(desguar('s jazz # fast 2')).toEqual('(fast 2 (s jazz))'));
+  it('should desugar # square', () => expect(desguar('[bd cp # fast 2]')).toEqual('(fast 2 (square bd cp))'));
+  it('should desugar # twice', () => expect(desguar('s jazz # fast 2 # slow 2')).toEqual('(slow 2 (fast 2 (s jazz)))'));
+  it('should desugar # nested', () => expect(desguar('(s cp # fast 2)')).toEqual('(fast 2 (s cp))'));
+  it('should desugar # within []', () => expect(desguar('[bd cp # fast 2]')).toEqual('(fast 2 (square bd cp))'));
+  it('should desugar # within , within []', () =>
+    expect(desguar('[bd cp # fast 2, x]')).toEqual('(stack (fast 2 (square bd cp)) x)'));
+
+  // it('should desugar .(.', () => expect(desguar('[jazz hh.(.fast 2)]')).toEqual('(square jazz (fast 2 hh))'));
+
+  it('should desugar , |', () => expect(desguar('[bd, hh | oh]')).toEqual('(stack bd (or hh oh))'));
+  it('should desugar , | of []', () =>
+    expect(desguar('[bd, hh | [oh rim]]')).toEqual('(stack bd (or hh (square oh rim)))'));
+  it('should desugar , square', () => expect(desguar('[bd, hh]')).toEqual('(stack bd hh)'));
+  it('should desugar , square 2', () => expect(desguar('[bd, hh oh]')).toEqual('(stack bd (square hh oh))'));
+  it('should desugar , square 3', () =>
+    expect(desguar('[bd cp, hh oh]')).toEqual('(stack (square bd cp) (square hh oh))'));
+  it('should desugar , angle', () => expect(desguar('<bd, hh>')).toEqual('(stack bd hh)'));
+  it('should desugar , angle 2', () => expect(desguar('<bd, hh oh>')).toEqual('(stack bd (angle hh oh))'));
+  it('should desugar , angle 3', () =>
+    expect(desguar('<bd cp, hh oh>')).toEqual('(stack (angle bd cp) (angle hh oh))'));
+  it('should desugar , ()', () => expect(desguar('(s bd, s cp)')).toEqual('(stack (s bd) (s cp))'));
+  it('should desugar * /', () => expect(desguar('[a b*2 c d/3 e]')).toEqual('(square a (* 2 b) c (/ 3 d) e)'));
+  it('should desugar []*x', () => expect(desguar('[a [b c]*3]')).toEqual('(square a (* 3 (square b c)))'));
+  it('should desugar []*<x y>', () => expect(desguar('[a b*<2 3> c]')).toEqual('(square a (* (angle 2 3) b) c)'));
+  it('should desugar x:y', () => expect(desguar('x:y')).toEqual('(: y x)'));
+  it('should desugar x:y:z', () => expect(desguar('x:y:z')).toEqual('(: z (: y x))'));
+  it('should desugar x:y*x', () => expect(desguar('bd:0*2')).toEqual('(* 2 (: 0 bd))'));
+  it('should desugar a..b', () => expect(desguar('0..2')).toEqual('(.. 2 0)'));
+  /* it('should desugar x $ y', () => expect(desguar('x $ y')).toEqual('(x y)'));
+  it('should desugar x $ y z', () => expect(desguar('x $ y z')).toEqual('(x (y z))'));
+  it('should desugar x $ y . z', () => expect(desguar('x $ y . z')).toEqual('(z (x y))')); */
+
+  it('should desugar README example', () =>
+    expect(desguar('s [bd hh*2 (cp # crush 4) <mt ht lt>] # speed .8')).toEqual(
+      '(speed .8 (s (square bd (* 2 hh) (crush 4 cp) (angle mt ht lt))))',
+    ));
+
+  it('should desugar (#)', () => expect(desguar('(#)')).toEqual('(fn (_) _)'));
+  it('should desugar lambda', () => expect(desguar('(# fast 2)')).toEqual('(fn (_) (fast 2 _))'));
+  it('should desugar lambda call', () => expect(desguar('((# mul 2) 2)')).toEqual('((fn (_) (mul 2 _)) 2)'));
+  it('should desugar lambda with pipe', () =>
+    expect(desguar('(# fast 2 # room 1)')).toEqual('(fn (_) (room 1 (fast 2 _)))'));
+  /* const lambda = parser.parse('(lambda (_) (fast 2 _))');
+  const target = { type: 'plain', value: 'xyz' };
+  it('should desugar_lambda', () =>
+    expect(printAst(parser.desugar_lambda(lambda.children, target))).toEqual('(fast 2 xyz)')); */
+});
+
+describe('mondo arithmetic', () => {
+  let multi =
+    (op) =>
+    (init, ...rest) =>
+      rest.reduce((acc, arg) => op(acc, arg), init);
+
+  let lib = {
+    '+': multi((a, b) => a + b),
+    add: multi((a, b) => a + b),
+    '-': multi((a, b) => a - b),
+    sub: multi((a, b) => a - b),
+    '*': multi((a, b) => a * b),
+    '/': multi((a, b) => a / b),
+    mod: multi((a, b) => a % b),
+    eq: (a, b) => a === b,
+    lt: (a, b) => a < b,
+    gt: (a, b) => a > b,
+    and: (a, b) => a && b,
+    or: (a, b) => a || b,
+    not: (a) => !a,
+    run: (...args) => args[args.length - 1],
+    def: () => 0,
+    sin: Math.sin,
+    cos: Math.cos,
+    PI: Math.PI,
+    cons: (a, b) => [a, ...(Array.isArray(b) ? b : [b])],
+    car: (pair) => pair[0],
+    cdr: (pair) => pair.slice(1),
+    list: (...items) => items,
+    nil: [],
+    isnull: (items) => items.length === 0,
+    concat: (...msgs) => msgs.join(''),
+    error: (...msgs) => {
+      throw new Error(msgs.join(' '));
+    },
+  };
+  function evaluator(node, scope) {
+    if (node.type !== 'list') {
+      // is leaf
+      return scope[node.value] ?? lib[node.value] ?? node.value;
+    }
+    // is list
+    const [fn, ...args] = node.children;
+    if (typeof fn !== 'function') {
+      throw new Error(`"${fn}": expected function, got ${typeof fn} "${fn}"`);
+    }
+    return fn(...args);
+  }
+  const runner = new MondoRunner({ evaluator });
+  let evaluate = (exp, scope) => runner.run(`run ${exp}`, scope);
+  let pretty = (exp) => printAst(runner.parser.parse(exp), false);
+  //it('should eval nested expression', () => expect(runner.run('add 1 (mul 2 PI)').toFixed(2)).toEqual('7.28'));
+
+  it('eval number', () => expect(evaluate('2')).toEqual(2));
+  it('eval string', () => expect(evaluate('abc')).toEqual('abc'));
+  it('eval list', () => expect(evaluate('(+ 1 2)')).toEqual(3));
+  it('eval nested list', () => expect(evaluate('(+ 1 (+ 2 3))')).toEqual(6));
+  it('def number', () => expect(evaluate('(def a 2) a')).toEqual(2));
+  it('def + ref number', () => expect(evaluate('(def a 2) (* a a)')).toEqual(4));
+  it('def + call lambda', () => expect(evaluate('(def sqr (fn (x) (* x x))) (sqr 3)')).toEqual(9));
+
+  // sicp
+  it('sicp 8.1', () => expect(evaluate('(+ 137 349)')).toEqual(486));
+  it('sicp 8.2', () => expect(evaluate('(- 1000 334)')).toEqual(666));
+  it('sicp 8.3', () => expect(evaluate('(* 5 99)')).toEqual(495));
+  it('sicp 8.4', () => expect(evaluate('(/ 10 5)')).toEqual(2));
+  it('sicp 8.5', () => expect(evaluate('(+ 2.7 10)')).toEqual(12.7));
+  it('sicp 9.1', () => expect(evaluate('(+ 21 35 12 7)')).toEqual(75));
+  it('sicp 9.2', () => expect(evaluate('(* 25 4 12)')).toEqual(1200));
+  it('sicp 9.3', () => expect(evaluate('(+ (* 3 5) (- 10 6))')).toEqual(19));
+  it('sicp 9.4', () =>
+    expect(pretty('(+ (* 3 (+ (* 2 4) (+ 3 5))) (+ (- 10 7) 6))')).toEqual(`(+ 
+ (* 3 
+  (+ 
+   (* 2 4) 
+   (+ 3 5)
+  )
+ ) 
+ (+ 
+  (- 10 7) 6
+ )
+)`)); // this is not exactly pretty printing by convention..
+
+  let scope = {};
+  it('sicp 11.1', () => expect(evaluate('(def size 2) (* 5 size)', scope)).toEqual(10));
+  it('sicp 11.2', () =>
+    expect(evaluate('(def pi 3.14159) (def radius 10) (* pi (* radius radius))', scope)).toEqual(314.159));
+  it('sicp 11.3', () => expect(evaluate('(def circumference (* 2 pi radius))', scope)).toEqual(0));
+  it('sicp 11.4', () => expect(evaluate('circumference', scope)).toEqual(62.8318));
+  it('sicp 13.1', () => expect(evaluate('(* (+ 2 (* 4 6)) (+ 3 5 7))')).toEqual(390));
+  it('sicp 16.1', () => expect(evaluate('(def (square x) (* x x))', scope)).toEqual(0));
+  // it('sicp 16.1', () => expect(evaluate('(def (square x) (* x x))', scope)).toEqual(0));
+  it('sicp 17.1', () => expect(evaluate('(square 21)', scope)).toEqual(441));
+  it('sicp 17.2', () => expect(evaluate('(square (+ 2 5))', scope)).toEqual(49));
+  it('sicp 17.3', () => expect(evaluate('(square (square 3))', scope)).toEqual(81));
+  it('sicp 17.4', () => expect(evaluate(`(def (sumofsquares x y) (+ (square x) (square y)))`, scope)).toEqual(0));
+  it('sicp 17.5', () => expect(evaluate(`(sumofsquares 3 4)`, scope)).toEqual(25));
+  it('sicp 17.6', () => expect(evaluate(`(def (f a) (sumofsquares (+ a 1) (* a 2))) (f 5)`, scope)).toEqual(136));
+  it('sicp 21.1', () => expect(evaluate(`(sumofsquares (+ 5 1) (* 5 2))`, scope)).toEqual(136));
+
+  it('sicp 22.1', () =>
+    expect(
+      evaluate(
+        `(def (abs x) 
+        (match 
+         ((gt x 0) x) 
+         ((eq x 0) 0)
+         ((lt x 0) (- 0 x))
+      ))`, // sicp was doing (- x), which doesnt work with our -
+        scope,
+      ),
+    ).toEqual(0));
+
+  it('sicp gt1', () => expect(evaluate(`(gt -12 0)`, scope)).toEqual(false));
+  it('sicp gt2', () => expect(evaluate(`(gt 0 -12)`, scope)).toEqual(true));
+  it('sicp lt1', () => expect(evaluate(`(lt -12 0)`, scope)).toEqual(true));
+  it('sicp lt2', () => expect(evaluate(`(lt 0 -12)`, scope)).toEqual(false));
+
+  it('sicp 24.1', () => expect(evaluate(`(abs (- 3))`, scope)).toEqual(3));
+  it('sicp 24.2', () => expect(evaluate(`(abs (+ 3))`, scope)).toEqual(3));
+  it('sicp 24.3', () => expect(evaluate(`(abs -12)`, scope)).toEqual(12));
+
+  it('sicp 24.4', () => expect(evaluate(`(def (abs x) (if (lt x 0) (- 0 x) x))`, scope)).toEqual(0));
+  it('sicp 24.5', () => expect(evaluate(`(abs -13)`, scope)).toEqual(13));
+  it('sicp 25.1', () => expect(evaluate(`(and (gt 6 5) (lt 6 10))`, scope)).toEqual(true));
+  it('sicp 25.2', () => expect(evaluate(`(and (gt 4 5) (lt 6 10))`, scope)).toEqual(false));
+
+  it('sicp ex1.1.1', () => expect(evaluate(`(def a 3)`, scope)).toEqual(0));
+  it('sicp ex1.1.2', () => expect(evaluate(`(def b (+ a 1))`, scope)).toEqual(0));
+  it('sicp ex1.1.3', () => expect(evaluate(`(+ a b (* a b))`, scope)).toEqual(19));
+  it('sicp ex1.1.4', () => expect(evaluate(`(if (and (gt b a) (lt b (* a b))) b a)`, scope)).toEqual(4));
+  it('sicp ex1.1.5', () => expect(evaluate(`(match ((eq a 4) 6) ((eq b 4) (+ 6 7 a)) (else 25))`, scope)).toEqual(16));
+  it('sicp ex1.1.6', () => expect(evaluate(`(+ 2 (if (gt b a) b a))`, scope)).toEqual(6));
+  it('sicp ex1.1.7', () =>
+    expect(evaluate(`(* (match ((gt a b) a) ((lt a b) b) (else -1)) (+ a 1))`, scope)).toEqual(16));
+
+  // .. cant use "+" and "-" as standalone expressions, because they are parsed as operators...
+  it('sicp ex1.4.1', () => expect(evaluate(`(def (foo a b) ((if (gt b 0) add sub) a b))`, scope)).toEqual(0));
+  it('sicp ex1.4.1', () => expect(evaluate(`(foo 3 1)`, scope)).toEqual(4));
+  it('sicp ex1.4.2', () => expect(evaluate(`(foo 3 -1)`, scope)).toEqual(4));
+
+  // 1.1.7 Example: Square Roots by Newton’s Method
+  it('sicp 30.1', () =>
+    expect(evaluate(`(def (goodenuf guess x) (lt (abs (- (square guess) x)) 0.001))`, scope)).toEqual(0));
+  it('sicp 30.2', () => expect(evaluate(`(goodenuf 1 1.001)`, scope)).toEqual(true));
+  it('sicp 30.3', () => expect(evaluate(`(goodenuf 1 1.002)`, scope)).toEqual(false));
+  it('sicp 30.4', () => expect(evaluate(`(def (average x y) (/ (+ x y) 2))`, scope)).toEqual(0));
+  it('sicp 30.5', () => expect(evaluate(`(average 18 20)`, scope)).toEqual(19));
+  it('sicp 30.6', () => expect(evaluate(`(def (improve guess x) (average guess (/ x guess)))`, scope)).toEqual(0));
+  it('sicp 31.1', () =>
+    expect(
+      evaluate(
+        `(def (sqrtiter guess x) (if (goodenuf guess x)
+      guess
+      (sqrtiter (improve guess x) x)))`,
+        scope,
+      ),
+    ).toEqual(0));
+  it('sicp 31.2', () => expect(evaluate(`(def (sqrt x) (sqrtiter 1.0 x))`, scope)).toEqual(0));
+  it('sicp 31.3', () => expect(evaluate(`(sqrt 9)`, scope)).toEqual(3.00009155413138));
+  it('sicp 31.4', () => expect(evaluate(`(sqrt (+ 100 37))`, scope)).toEqual(11.704699917758145));
+  // eslint-disable-next-line no-loss-of-precision
+  it('sicp 31.5', () => expect(evaluate(`(sqrt (+ (sqrt 2) (sqrt 3)))`, scope)).toEqual(1.77392790232078925));
+  it('sicp 31.6', () => expect(evaluate(`(square (sqrt 1000))`, scope)).toEqual(1000.000369924366));
+
+  // lexical scoping
+  it('sicp 39.1', () =>
+    expect(
+      evaluate(
+        `
+(def (sqrt x)
+ (def (goodenough guess)
+  (lt (abs (- (square guess) x)) 0.001)) 
+(def (improve guess)
+ (average guess (/ x guess))) 
+(def (sqrt-iter guess)
+ (if (goodenough guess) guess (sqrt-iter (improve guess))))
+(sqrtiter 1.0))
+  
+  `,
+        scope,
+      ),
+    ).toEqual(0));
+
+  // recursive fac
+  it('sicp 41.1', () => expect(evaluate(`(def (fac n) (if (eq n 1) 1 (* n (fac (- n 1)))))`, scope)).toEqual(0));
+  it('sicp 41.2', () => expect(evaluate(`(fac 4)`, scope)).toEqual(24));
+
+  // iterative fac
+  it('sicp 41.3', () =>
+    expect(
+      evaluate(
+        `
+(def (factorial n) (factiter 1 1 n))
+(def (factiter product counter maxcount) 
+ (if (gt counter maxcount)
+  product
+  (factiter (* counter product)
+             (+ counter 1)
+             maxcount)))
+`,
+        scope,
+      ),
+    ).toEqual(0));
+  it('sicp 41.4', () => expect(evaluate(`(fac 4)`, scope)).toEqual(24));
+
+  // 46.1
+  /* (def (+ a b)
+(if (= a 0) b (inc (+ (dec a) b))))
+(def (+ a b)
+(if (= a 0) b (+ (dec a) (inc b)))) */
+
+  // Exercise 1.10
+  //  Ackermann’s function
+  it('sicp 47.1', () =>
+    expect(
+      evaluate(
+        `
+(def (A x y) (match ((eq y 0) 0) 
+((eq x 0) (* 2 y))
+((eq y 1) 2)
+(else (A (- x 1) (A x (- y 1))))))
+`,
+        scope,
+      ),
+    ).toEqual(0));
+  it('sicp 47.2', () => expect(evaluate(`(A 1 10)`, scope)).toEqual(1024));
+  it('sicp 47.3', () => expect(evaluate(`(A 2 4)`, scope)).toEqual(65536));
+  it('sicp 47.4', () => expect(evaluate(`(A 3 3)`, scope)).toEqual(65536));
+  it('sicp 47.5', () =>
+    expect(
+      evaluate(
+        `
+(def (f n) (A 0 n))
+(def (g n) (A 1 n)))
+(def (h n) (A 2 n))
+(def (k n) (* 5 n n))
+    `,
+        scope,
+      ),
+    ).toEqual(0));
+
+  // Tree Recursion
+  // recursive process
+  it('sicp 48.1', () =>
+    expect(
+      evaluate(
+        `
+(def (fib n) (match ((eq n 0) 0) ((eq n 1) 1)
+(else (+ (fib (- n 1)) (fib (- n 2))))))
+(fib 7)
+    `,
+        scope,
+      ),
+    ).toEqual(13));
+
+  // iterative process
+  it('sicp 48.2', () =>
+    expect(
+      evaluate(
+        `
+(def (fib n) (fibiter 1 0 n))
+(def (fibiter a b count) (if (eq count 0)
+      b
+      (fibiter (+ a b) a (- count 1))))
+(fib 7)
+    `,
+        scope,
+      ),
+    ).toEqual(13));
+
+  // example: counting change
+  it('sicp 52.2', () =>
+    expect(
+      evaluate(
+        `
+(def (countchange amount) (cc amount 5))
+(def (cc amount kindsofcoins)
+ (match 
+  ((eq amount 0) 1)
+  ((or (lt amount 0) (eq kindsofcoins 0)) 0)
+  (else (+ 
+   (cc amount (- kindsofcoins 1))
+   (cc (- amount (firstdenomination kindsofcoins)) kindsofcoins)))))
+
+(def (firstdenomination kindsofcoins)
+(match 
+ ((eq kindsofcoins 1) 1) 
+ ((eq kindsofcoins 2) 5)
+ ((eq kindsofcoins 3) 10)
+ ((eq kindsofcoins 4) 25)
+ ((eq kindsofcoins 5) 50)))
+
+(countchange 100)
+    `,
+        scope,
+      ),
+    ).toEqual(292));
+
+  // todo: pascals triangle
+  it('sicp 57.1', () =>
+    expect(
+      evaluate(
+        `
+(def (cube x) (* x x x))
+(def (p x) (sub (* 3 x) (* 4 (cube x))))
+(def (sine angle)
+(if (not (gt (abs angle) 0.1)) angle
+(p (sine (/ angle 3.0)))))
+
+(sine 12.15)
+    `,
+        scope,
+      ),
+    ).toEqual(-0.39980345741334));
+
+  // exponentiation recursive
+  it('sicp 57.2', () =>
+    expect(
+      evaluate(
+        `
+(def (expt b n) (if (eq n 0) 1 (* b (expt b (- n 1)))))
+(expt 2 4)
+`,
+        scope,
+      ),
+    ).toEqual(16));
+
+  // exponentiation iterative
+  it('sicp 58.1b', () =>
+    expect(
+      evaluate(
+        `
+(def (expt b n) (exptiter b n 1))
+(def (exptiter b counter product) (if (eq counter 0)
+      product
+      (exptiter b (- counter 1) (* b product))))
+(expt 2 5)
+  `,
+        scope,
+      ),
+    ).toEqual(32));
+
+  // exponentiation fast
+  it('sicp 58.2', () =>
+    expect(
+      evaluate(
+        `
+(def (fastexpt b n) (match ((eq n 0) 1)
+((iseven n) (square (fastexpt b (/ n 2)))) (else (* b (fastexpt b (- n 1))))))
+(def (iseven n)
+(eq (mod n 2) 0))
+(fastexpt 2 5)
+   `,
+        scope,
+      ),
+    ).toEqual(32));
+
+  // * = repeated addition
+  it('sicp 60.1', () =>
+    expect(
+      evaluate(
+        `(def (mult a b) (if (eq b 0)
+        0
+        (+ a (* a (- b 1)))))
+        (mult 3 15)
+   `,
+      ),
+    ).toEqual(45));
+
+  // gcd / euclid
+  it('sicp 63.1', () =>
+    expect(
+      evaluate(
+        `(def (gcd a b) (if (eq b 0)
+      a
+      (gcd b (mod a b))))
+      (gcd 20 6)
+     `,
+        scope,
+      ),
+    ).toEqual(2));
+
+  // 65 smallest divisor
+  // 67 fermat test
+  // ....
+
+  // higher order procedures
+
+  it('sicp 77.1', () =>
+    expect(
+      evaluate(
+        `
+(def (sum term a next b)
+(if (gt a b) 0 (+ (term a)
+(sum term (next a) next b))))
+`,
+        scope,
+      ),
+    ).toEqual(0));
+
+  it('sicp 78.1', () =>
+    expect(
+      evaluate(
+        `
+(def (inc n) (+ n 1))
+(def (cube a) (* a a a))
+(def (sumcubes a b)
+(sum cube a inc b))
+(sumcubes 1 10)
+  `,
+        scope,
+      ),
+    ).toEqual(3025));
+
+  it('sicp 78.2', () =>
+    expect(
+      evaluate(
+        `
+    (def (identity x) x)
+    (def (sumintegers a b)
+    (sum identity a inc b))
+    (sumintegers 1 10)
+    `,
+        scope,
+      ),
+    ).toEqual(55));
+
+  // pisum
+  it('sicp 79.1', () =>
+    expect(
+      evaluate(
+        `
+(def (pisum a b) 
+ (def (piterm x)
+  (/ 1.0 (* x (+ x 2)))) 
+(def (pinext x) (+ x 4))
+(sum piterm a pinext b))
+(* 8 (pisum 1 1000))
+`,
+        scope,
+      ),
+    ).toEqual(3.139592655589783));
+
+  // integral
+  it('sicp 79.2', () =>
+    expect(
+      evaluate(
+        `
+(def (integral f a b dx) 
+ (def (adddx x) (+ x dx))
+(* (sum f (+ a (/ dx 2.0)) adddx b) dx))
+(integral cube 0 1 0.01)
+  `,
+        scope,
+      ),
+    ).toEqual(0.24998750000000042));
+  // maximum callstack...
+  //it('sicp 79.3', () => expect(evaluate(`(integral cube 0 1 0.001)`, scope)).toEqual(0.249999875000001));
+
+  //lambdas
+  it('sicp 83.1', () => expect(evaluate(`((fn (x) (+ x 4)) 5)`)).toEqual(9));
+
+  it('sicp 83.2', () =>
+    expect(
+      evaluate(
+        `
+(def (pisum a b)
+  (sum (fn (x) (/ 1.0 (* x (+ x 2))))
+        a
+        (fn (x) (+ x 4)) 
+        b))
+(* 8 (pisum 1 1000))
+`,
+        scope,
+      ),
+    ).toEqual(3.139592655589783));
+  it('sicp 83.3', () =>
+    expect(
+      evaluate(
+        `
+(def (integral f a b dx) 
+ (* (sum f
+         (+ a (/ dx 2.0)) 
+         (fn (x) (+ x dx)) 
+         b)
+    dx))
+(integral cube 0 1 0.01)
+`,
+        scope,
+      ),
+    ).toEqual(0.24998750000000042));
+  it('sicp 84.1', () => expect(evaluate(`((fn (x y z) (+ x y (square z))) 1 2 3)`, scope)).toEqual(12));
+
+  // let expressions
+  it('sicp 87.1', () =>
+    expect(
+      evaluate(
+        `
+(+ (let ((x 3))
+(+ x (* x 10))) x)
+`,
+        { x: 5 },
+      ),
+    ).toEqual(38));
+  it('sicp 87.2', () =>
+    expect(
+      evaluate(
+        `
+(let ((x 3)
+(y (+ x 2)))
+(* x y))
+  `,
+        { x: 2 },
+      ),
+    ).toEqual(12));
+  it('sicp 88.1', () =>
+    expect(
+      evaluate(
+        `
+(def (f g) (g 2))
+(f square)
+      `,
+        scope,
+      ),
+    ).toEqual(4));
+  it('sicp 88.2', () =>
+    expect(
+      evaluate(
+        `
+  (def (f g) (g 2))
+  (f (fn (z) (* z (+ z 1))))
+            `,
+        scope,
+      ),
+    ).toEqual(6));
+
+  // Finding roots of equations by the half-interval method
+  it('sicp 89.1', () =>
+    expect(
+      evaluate(
+        `
+(def (search f negpoint pospoint)
+ (let ((midpoint (average negpoint pospoint)))
+ (if (closeenough negpoint pospoint) 
+  midpoint
+  (let ((testvalue (f midpoint))) 
+   (match ((positive testvalue)
+           (search f negpoint midpoint))
+          ((negative testvalue)
+           (search f midpoint pospoint)) 
+          (else midpoint))))))
+
+(def (closeenough x y) (lt (abs (- x y)) 0.001))
+
+(def (negative x) (lt x 0))
+(def (positive x) (gt x 0))
+
+(def (halfintervalmethod f a b) (let ((avalue (f a))
+(bvalue (f b)))
+(match ((and (negative avalue) (positive bvalue))
+(search f a b))
+((and (negative bvalue) (positive avalue))
+(search f b a)) (else
+(error "Values are not of opposite sign" a b)))))
+
+(halfintervalmethod sin 2.0 4.0)
+`,
+        scope,
+      ),
+    ).toEqual(3.14111328125));
+
+  it('sicp 89.1', () =>
+    expect(evaluate(`(halfintervalmethod (fn (x) (- (* x x x) (* 2 x) 3)) 1.0 2.0)`, scope)).toEqual(1.89306640625));
+
+  // Finding fixed points of functions
+  it('sicp 92.1', () =>
+    expect(
+      evaluate(
+        `
+(def tolerance 0.00001)
+(def (fixedpoint f first-guess)
+ (def (closeenough v1 v2) (lt (abs (- v1 v2)) tolerance)) 
+ (def (try guess)
+  (let ((next (f guess)))
+  (if (closeenough guess next) next (try next))))
+ (try first-guess))
+
+(fixedpoint cos 1.0)
+`,
+        scope,
+      ),
+    ).toEqual(0.7390822985224023));
+  it('sicp 93.1', () =>
+    expect(evaluate(`(fixedpoint (fn (y) (+ (sin y) (cos y))) 1.0)`, scope)).toEqual(1.2587315962971173));
+  // Maximum call stack size exceeded (expected)
+  /* it('sicp 93.2', () =>
+    expect(evaluate(`(def (sqrt x) (fixedpoint (fn (y) (/ x y)) 1.0)) (sqrt 4)`, scope)).toEqual(0)); */
+  it('sicp 93.3', () =>
+    expect(evaluate(`(def (sqrt x) (fixedpoint (fn (y) (average y (/ x y))) 1.0)) (sqrt 7)`, scope)).toEqual(
+      2.6457513110645907,
+    ));
+  // Procedures as Returned Values
+  it('sicp 97.1', () =>
+    expect(evaluate(`(def (averagedamp f) (fn (x) (average x (f x)))) ((averagedamp square) 10)`, scope)).toEqual(55));
+  it('sicp 98.1', () =>
+    expect(evaluate(`(def (sqrt x) (fixedpoint (averagedamp (fn (y) (/ x y))) 1.0)) (sqrt 7)`, scope)).toEqual(
+      2.6457513110645907,
+    ));
+  it('sicp 98.2', () =>
+    expect(
+      evaluate(`(def (cuberoot x) (fixedpoint (averagedamp (fn (y) (/ x (square y)))) 1.0)) (cuberoot 7)`, scope),
+    ).toEqual(1.912934258514886));
+  it('sicp 99.1', () =>
+    expect(
+      evaluate(
+        `
+        (def (deriv g) (fn (x) (/ (- (g (+ x dx)) (g x)) dx))) 
+        (def dx 0.00001)
+        (def (cube x) (* x x x))
+        ((deriv cube) 5)
+        `,
+        scope,
+      ),
+    ).toEqual(75.00014999664018));
+  // With the aid of deriv, we can express Newton’s method as a fixed-point process:
+  it('sicp 100.1', () =>
+    expect(
+      evaluate(
+        `
+(def (newtontransform g)
+(fn (x) (- x (/ (g x) ((deriv g) x)))))
+(def (newtonsmethod g guess) (fixedpoint (newtontransform g) guess))
+(def (sqrt x) (newtonsmethod (fn (y) (- (square y) x)) 1.0))
+(sqrt 7)
+          `,
+        scope,
+      ),
+    ).toEqual(2.6457513110645907));
+  // whatever this is
+  it('sicp 101.1', () =>
+    expect(
+      evaluate(
+        `
+  (def (fixedpointoftransform g transform guess) (fixedpoint (transform g) guess))
+  (def (sqrt x) (fixedpointoftransform
+  (fn (y) (/ x y)) averagedamp 1.0))
+  (sqrt 7)
+  `,
+        scope,
+      ),
+    ).toEqual(2.6457513110645907));
+  it('sicp 101.2', () =>
+    expect(
+      evaluate(
+        `
+(def (sqrt x) (fixedpointoftransform
+(fn (y) (- (square y) x)) newtontransform 1.0))
+(sqrt 7)
+    `,
+        scope,
+      ),
+    ).toEqual(2.6457513110645907));
+
+  // data abstraction
+
+  // rational arithmetic
+  it('sicp 114.1', () =>
+    expect(
+      evaluate(
+        `
+(def (addrat x y)
+ (makerat (+ (* 
+   (numer x) (denom y))
+   (* (numer y) (denom x)))
+  (* (denom x) (denom y))))
+(def (subrat x y)
+ (makerat (- (* (numer x) (denom y))
+   (* (numer y) (denom x)))
+  (* (denom x) (denom y))))
+(def (mulrat x y)
+ (makerat (* (numer x) (numer y))
+  (* (denom x) (denom y)))) 
+(def (divrat x y)
+  (makerat (* (numer x) (denom y))
+   (* (denom x) (numer y))))
+(def (equalrat x y)
+  (eq (* (numer x) (denom y))
+     (* (numer y) (denom x))))
+        `,
+        scope,
+      ),
+    ).toEqual(0));
+
+  // markerat number denom
+  it('sicp 117.1', () =>
+    expect(
+      evaluate(
+        `
+(def (makerat n d) (cons n d)) 
+(def (numer x) (car x))
+(def (denom x) (cdr x))
+(def (printrat x) (concat (numer x) ':' (denom x)))
+      `,
+        scope,
+      ),
+    ).toEqual(0));
+
+  it('sicp 117.1', () => expect(evaluate(`(def onehalf (makerat 1 2)) (printrat onehalf)`, scope)).toEqual('1:2'));
+  it('sicp 117.2', () =>
+    expect(evaluate(`(def onethird (makerat 1 3)) (printrat (addrat onehalf onethird))`, scope)).toEqual('5:6'));
+  it('sicp 117.3', () => expect(evaluate(`(printrat (mulrat onehalf onethird))`, scope)).toEqual('1:6'));
+  it('sicp 117.4', () => expect(evaluate(`(printrat (addrat onethird onethird))`, scope)).toEqual('6:9'));
+  it('sicp 118.1', () =>
+    expect(evaluate(`(def (makerat n d) (let ((g (gcd n d))) (cons (/ n g) (/ d g))))`, scope)).toEqual(0));
+  it('sicp 118.1', () => expect(evaluate(`(printrat (addrat onethird onethird))`, scope)).toEqual('2:3'));
+
+  let lscope = {};
+  // pairs with lambda
+  it('sicp 124.1', () =>
+    expect(
+      evaluate(
+        `
+(def (cons x y) 
+ (def (dispatch m)
+  (match 
+   ((eq m 0) x) 
+   ((eq m 1) y)
+   (else (error "argument not 0 or 1: CONS" m)))
+  ) dispatch)
+ (def (car z) (z 0)) 
+ (def (cdr z) (z 1))
+      `,
+        lscope,
+      ),
+    ).toEqual(0));
+  it('sicp 124.1', () => expect(evaluate(`(car (cons first second))`, lscope)).toEqual('first'));
+  it('sicp 124.2', () => expect(evaluate(`(cdr (cons first second))`, lscope)).toEqual('second'));
+  // lists
+  it('sicp 135.1', () => expect(evaluate(`(list 1 2 3 4)`)).toEqual([1, 2, 3, 4]));
+  it('sicp 137.1', () => expect(evaluate(`(car (list 1 2 3 4))`)).toEqual(1));
+  it('sicp 137.2', () => expect(evaluate(`(cdr (list 1 2 3 4))`)).toEqual([2, 3, 4]));
+  it('sicp 137.3', () => expect(evaluate(`(car (cdr (list 1 2 3 4)))`)).toEqual(2));
+  it('sicp 137.4', () => expect(evaluate(`(cons 10 (list 1 2 3 4))`)).toEqual([10, 1, 2, 3, 4]));
+  // listref
+  it('sicp 138.1', () =>
+    expect(
+      evaluate(
+        `
+(def (listref items n) (if (eq n 0) (car items) 
+ (listref (cdr items) (- n 1)))) 
+(def squares (list 1 4 9 16 25)) 
+(listref squares 3)`,
+        scope,
+      ),
+    ).toEqual(16));
+  // length recursive
+  it('sicp 138.2', () =>
+    expect(
+      evaluate(
+        `
+  (def (length items) 
+   (if (isnull items) 0
+    (+ 1 (length (cdr items))))) 
+  (def odds (list 1 3 5 7)) 
+  (length odds)`,
+      ),
+    ).toEqual(4));
+  // length iterative
+  it('sicp 139.1', () =>
+    expect(
+      evaluate(
+        `
+  (def (length items)
+  (def (lengthiter a count)
+   (if (isnull a) count
+    (lengthiter (cdr a) (+ 1 count))))
+    (lengthiter items 0))
+  (def odds (list 1 3 5 7)) 
+  (length odds)
+  `,
+        scope,
+      ),
+    ).toEqual(4));
+  // append
+  it('sicp 139.1', () =>
+    expect(
+      evaluate(
+        `
+(def (append list1 list2) 
+(if (isnull list1)
+  list2
+  (cons (car list1) (append (cdr list1) list2))))
+  (append squares odds)
+    `,
+        scope,
+      ),
+    ).toEqual([1, 4, 9, 16, 25, 1, 3, 5, 7]));
+  // (define (f x y . z) ⟨body⟩) <- tbd: variable argument count
+  // Mapping over lists
+
+  it('sicp 143.1', () =>
+    expect(
+      evaluate(
+        `
+(def (scalelist items factor) (if (isnull items) nil
+    (cons (* (car items) factor)
+          (scalelist (cdr items) factor))))
+(scalelist (list 1 2 3 4 5) 10)
+    `,
+        scope,
+      ),
+    ).toEqual([10, 20, 30, 40, 50]));
+
+  it('sicp 143.1', () =>
+    expect(
+      evaluate(
+        `
+  (def (map proc items) (if (isnull items) nil
+        (cons (proc (car items))
+              (map proc (cdr items)))))
+  (map abs (list -10 2.5 -11.6 17))
+  `,
+        scope,
+      ),
+    ).toEqual([10, 2.5, 11.6, 17]));
+  it('sicp 143.1', () => expect(evaluate(`(map (fn (x) (* x x)) (list 1 2 3 4))`, scope)).toEqual([1, 4, 9, 16]));
+  it('sicp 143.1', () =>
+    expect(
+      evaluate(
+        `
+(def (scalelist items factor) (map (fn (x) (* x factor)) items))
+(scalelist (list 1 2 3 4 5) 10)
+`,
+        scope,
+      ),
+    ).toEqual([10, 20, 30, 40, 50]));
+});

packages/mondo/vite.config.js

@@ -0,0 +1,19 @@
+import { defineConfig } from 'vite';
+//import { dependencies } from './package.json';
+import { resolve } from 'path';
+
+// https://vitejs.dev/config/
+export default defineConfig({
+  plugins: [],
+  build: {
+    lib: {
+      entry: resolve(__dirname, 'mondo.mjs'),
+      formats: ['es'],
+      fileName: (ext) => ({ es: 'mondo.mjs' })[ext],
+    },
+    rollupOptions: {
+      // external: [...Object.keys(dependencies)],
+    },
+    target: 'esnext',
+  },
+});

packages/mondough/README.md

@@ -0,0 +1,3 @@
+# @strudel/mondough
+
+connects mondo to strudel.

packages/mondough/mondough.mjs

@@ -0,0 +1,132 @@
+import {
+  strudelScope,
+  reify,
+  fast,
+  slow,
+  seq,
+  stepcat,
+  extend,
+  expand,
+  pace,
+  chooseIn,
+  degradeBy,
+  silence,
+} from '@strudel/core';
+import { registerLanguage } from '@strudel/transpiler';
+import { MondoRunner } from 'mondolang';
+
+const tail = (friend, pat) => pat.fmap((a) => (b) => (Array.isArray(a) ? [...a, b] : [a, b])).appLeft(friend);
+
+const arrayRange = (start, stop, step = 1) =>
+  Array.from({ length: Math.abs(stop - start) / step + 1 }, (_, index) =>
+    start < stop ? start + index * step : start - index * step,
+  );
+const range = (max, min) => min.squeezeBind((a) => max.bind((b) => seq(...arrayRange(a, b))));
+
+let nope = (...args) => args[args.length - 1];
+
+let lib = {};
+lib['nope'] = nope;
+lib['-'] = (a, b) => b.early(a);
+lib['+'] = (a, b) => b.late(a);
+lib['_'] = silence;
+lib['~'] = silence;
+lib.curly = stepcat;
+lib.square = (...args) => stepcat(...args).setSteps(1);
+lib.angle = (...args) => stepcat(...args).pace(1);
+lib['*'] = fast;
+lib['/'] = slow;
+lib['!'] = extend;
+lib['@'] = expand;
+lib['%'] = pace;
+lib['?'] = degradeBy; // todo: default 0.5 not working..
+lib[':'] = tail;
+lib['..'] = range;
+lib['def'] = () => silence;
+lib['or'] = (...children) => chooseIn(...children); // always has structure but is cyclewise.. e.g. "s oh*8.dec[.04 | .5]"
+//lib['or'] = (...children) => chooseOut(...children); // "s oh*8.dec[.04 | .5]" is better but "dec[.04 | .5].s oh*8" has no struct
+
+function evaluator(node, scope) {
+  const { type } = node;
+  // node is list
+  if (type === 'list') {
+    const { children } = node;
+    const [name, ...args] = children;
+    // some functions wont be reified to make sure they work (e.g. see extend below)
+    if (typeof name === 'function') {
+      return name(...args);
+    }
+    if (name.value === 'def') {
+      return silence;
+    }
+    // name is expected to be a pattern of functions!
+    const first = name.firstCycle(true)[0];
+    const type = typeof first?.value;
+    if (type !== 'function') {
+      throw new Error(`[mondough] expected function, got "${first?.value}"`);
+    }
+    return name
+      .fmap((fn) => {
+        if (typeof fn !== 'function') {
+          throw new Error(`[mondough] "${fn}" is not a function b`);
+        }
+        return fn(...args);
+      })
+      .innerJoin();
+  }
+  // node is leaf
+  let { value } = node;
+  if (type === 'plain' && scope[value]) {
+    return reify(scope[value]); // -> local scope has no location
+  }
+  const variable = lib[value] ?? strudelScope[value];
+  // problem: collisions when we want a string that happens to also be a variable name
+  // example: "s sine" -> sine is also a variable
+  let pat;
+  if (type === 'plain' && typeof variable !== 'undefined') {
+    // some function names are not patternable, so we skip reification here
+    if (['!', 'extend', '@', 'expand', 'square', 'angle'].includes(value)) {
+      return variable;
+    }
+    pat = reify(variable);
+  } else {
+    pat = reify(value);
+  }
+  if (node.loc) {
+    pat = pat.withLoc(node.loc[0], node.loc[1]);
+  }
+  return pat;
+}
+
+let runner = new MondoRunner({ evaluator });
+
+export function mondo(code, offset = 0) {
+  if (Array.isArray(code)) {
+    code = code.join('');
+  }
+  const pat = runner.run(code, undefined, offset);
+  return pat.markcss('color: var(--caret,--foreground);text-decoration:underline');
+}
+
+let getLocations = (code, offset) => runner.parser.get_locations(code, offset);
+
+export const mondi = (str, offset) => {
+  const code = `[${str}]`;
+  return mondo(code, offset);
+};
+
+// tell transpiler how to get locations for mondo`` calls
+registerLanguage('mondo', {
+  getLocations,
+});
+
+// this is like mondo, but with a zero offset
+export const mondolang = (code) => mondo(code, 0);
+registerLanguage('mondolang', {
+  getLocations: (code) => getLocations(code, 0),
+});
+// uncomment the following to use mondo as mini notation language
+/* registerLanguage('minilang', {
+  name: 'mondi',
+  getLocations,
+}); */

packages/mondough/package.json

@@ -0,0 +1,44 @@
+{
+  "name": "@strudel/mondo",
+  "version": "1.1.1",
+  "description": "mondo notation for strudel",
+  "main": "mondough.mjs",
+  "type": "module",
+  "publishConfig": {
+    "main": "dist/mondough.mjs"
+  },
+  "scripts": {
+    "test": "vitest run",
+    "bench": "vitest bench",
+    "build:parser": "peggy -o krill-parser.js --format es ./krill.pegjs",
+    "build": "vite build",
+    "prepublishOnly": "npm run build"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/tidalcycles/strudel.git"
+  },
+  "keywords": [
+    "tidalcycles",
+    "strudel",
+    "pattern",
+    "livecoding",
+    "algorave"
+  ],
+  "author": "Felix Roos <flix91@gmail.com>",
+  "license": "AGPL-3.0-or-later",
+  "bugs": {
+    "url": "https://github.com/tidalcycles/strudel/issues"
+  },
+  "homepage": "https://github.com/tidalcycles/strudel#readme",
+  "dependencies": {
+    "@strudel/core": "workspace:*",
+    "@strudel/transpiler": "workspace:*",
+    "mondolang": "workspace:*"
+  },
+  "devDependencies": {
+    "mondo": "*",
+    "vite": "^6.0.11",
+    "vitest": "^3.0.4"
+  }
+}

packages/mondough/vite.config.js

@@ -0,0 +1,19 @@
+import { defineConfig } from 'vite';
+//import { dependencies } from './package.json';
+import { resolve } from 'path';
+
+// https://vitejs.dev/config/
+export default defineConfig({
+  plugins: [],
+  build: {
+    lib: {
+      entry: resolve(__dirname, 'mondough.mjs'),
+      formats: ['es'],
+      fileName: (ext) => ({ es: 'mondough.mjs' })[ext],
+    },
+    rollupOptions: {
+      // external: [...Object.keys(dependencies)],
+    },
+    target: 'esnext',
+  },
+});

packages/motion/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@strudel/motion",
-  "version": "1.2.2",
+  "version": "1.2.3",
   "description": "DeviceMotion API for strudel",
   "main": "index.mjs",
   "type": "module",

packages/mqtt/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@strudel/mqtt",
-  "version": "1.2.2",
+  "version": "1.2.3",
   "description": "MQTT API for strudel",
   "main": "mqtt.mjs",
   "type": "module",

packages/osc/osc.mjs

@@ -60,7 +60,7 @@ export function parseControlsFromHap(hap, cps) {
 
 const collator = new ClockCollator({});
 
-export async function oscTrigger(t_deprecate, hap, currentTime, cps = 1, targetTime) {
+export async function oscTrigger(hap, currentTime, cps = 1, targetTime) {
   const osc = await connect();
   const controls = parseControlsFromHap(hap, cps);
   const keyvals = Object.entries(controls).flat();

packages/osc/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@strudel/osc",
-  "version": "1.2.2",
+  "version": "1.2.3",
   "description": "OSC messaging for strudel",
   "main": "osc.mjs",
   "type": "module",

packages/reference/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@strudel/reference",
-  "version": "1.2.0",
+  "version": "1.2.1",
   "description": "Headless reference of all strudel functions",
   "main": "index.mjs",
   "type": "module",

packages/repl/README.md

@@ -17,7 +17,7 @@ You can also pin the version like this:
 ```
 
 This has the advantage that your code will always work, regardless of potential breaking changes in the strudel codebase.
-See [releases](https://github.com/tidalcycles/strudel/releases) for the latest versions.
+See [releases](https://codeberg.org/uzu/strudel/releases) for the latest versions.
 
 ## Use Web Component
 
@@ -91,7 +91,7 @@ or
 </script>
 ```
 
-The `.editor` property on the `strudel-editor` web component gives you the instance of [StrudelMirror](https://github.com/tidalcycles/strudel/blob/a46bd9b36ea7d31c9f1d3fca484297c7da86893f/packages/codemirror/codemirror.mjs#L124) that runs the REPL.
+The `.editor` property on the `strudel-editor` web component gives you the instance of [StrudelMirror](https://codeberg.org/uzu/strudel/src/branch/a46bd9b36ea7d31c9f1d3fca484297c7da86893f/packages/codemirror/codemirror.mjs#L124) that runs the REPL.
 
 For example, you could use `setCode` to change the code from the outside, `start` / `stop` to toggle playback or `evaluate` to evaluate the code.
 

packages/repl/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@strudel/repl",
-  "version": "1.2.3",
+  "version": "1.2.4",
   "description": "Strudel REPL as a Web Component",
   "module": "index.mjs",
   "publishConfig": {

packages/repl/prebake.mjs

@@ -36,7 +36,7 @@ export async function prebake() {
     samples(`${ds}/tidal-drum-machines.json`),
     samples(`${ds}/piano.json`),
     samples(`${ds}/Dirt-Samples.json`),
-    samples(`${ds}/EmuSP12.json`),
+    samples(`${ds}/uzu-drumkit.json`),
     samples(`${ds}/vcsl.json`),
     samples(`${ds}/mridangam.json`),
   ]);

packages/serial/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@strudel/serial",
-  "version": "1.2.2",
+  "version": "1.2.3",
   "description": "Webserial API for strudel",
   "main": "serial.mjs",
   "type": "module",

packages/soundfonts/gm.mjs

@@ -537,7 +537,7 @@ export default {
   ],
   gm_synth_bass_1: [
     // Synth Bass 1: Bass
-    '0380_Aspirin_sf2_file',
+    // '0380_Aspirin_sf2_file', // broken in safari https://codeberg.org/uzu/strudel/issues/1384
     '0380_Chaos_sf2_file',
     '0380_FluidR3_GM_sf2_file',
     // 0380_GeneralUserGS_sf2_file // laut

packages/soundfonts/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@strudel/soundfonts",
-  "version": "1.2.3",
+  "version": "1.2.4",
   "description": "Soundsfont support for strudel",
   "main": "index.mjs",
   "publishConfig": {