diff --git a/packages/codemirror/package.json b/packages/codemirror/package.json
index c45fa2e2d..22213ac7d 100644
--- a/packages/codemirror/package.json
+++ b/packages/codemirror/package.json
@@ -1,11 +1,10 @@
 {
   "name": "@strudel/codemirror",
-  "version": "1.0.0",
+  "version": "1.0.1",
   "description": "Codemirror Extensions for Strudel",
   "main": "index.mjs",
   "publishConfig": {
-    "main": "dist/index.js",
-    "module": "dist/index.mjs"
+    "main": "dist/index.mjs"
   },
   "scripts": {
     "build": "vite build",
diff --git a/packages/codemirror/vite.config.js b/packages/codemirror/vite.config.js
index c1d1a2ee0..5df3edc1b 100644
--- a/packages/codemirror/vite.config.js
+++ b/packages/codemirror/vite.config.js
@@ -8,8 +8,8 @@ export default defineConfig({
   build: {
     lib: {
       entry: resolve(__dirname, 'index.mjs'),
-      formats: ['es', 'cjs'],
-      fileName: (ext) => ({ es: 'index.mjs', cjs: 'index.js' })[ext],
+      formats: ['es'],
+      fileName: (ext) => ({ es: 'index.mjs' })[ext],
     },
     rollupOptions: {
       external: [...Object.keys(dependencies)],
diff --git a/packages/core/package.json b/packages/core/package.json
index 158e51bfc..7f59ed416 100644
--- a/packages/core/package.json
+++ b/packages/core/package.json
@@ -1,12 +1,11 @@
 {
   "name": "@strudel/core",
-  "version": "1.0.0",
+  "version": "1.0.1",
   "description": "Port of Tidal Cycles to JavaScript",
   "main": "index.mjs",
   "type": "module",
   "publishConfig": {
-    "main": "dist/index.js",
-    "module": "dist/index.mjs"
+    "main": "dist/index.mjs"
   },
   "scripts": {
     "test": "vitest run",
diff --git a/packages/core/vite.config.js b/packages/core/vite.config.js
index c1d1a2ee0..5df3edc1b 100644
--- a/packages/core/vite.config.js
+++ b/packages/core/vite.config.js
@@ -8,8 +8,8 @@ export default defineConfig({
   build: {
     lib: {
       entry: resolve(__dirname, 'index.mjs'),
-      formats: ['es', 'cjs'],
-      fileName: (ext) => ({ es: 'index.mjs', cjs: 'index.js' })[ext],
+      formats: ['es'],
+      fileName: (ext) => ({ es: 'index.mjs' })[ext],
     },
     rollupOptions: {
       external: [...Object.keys(dependencies)],
diff --git a/packages/csound/package.json b/packages/csound/package.json
index 333728863..e0811208e 100644
--- a/packages/csound/package.json
+++ b/packages/csound/package.json
@@ -1,11 +1,11 @@
 {
   "name": "@strudel/csound",
-  "version": "1.0.0",
+  "version": "1.0.1",
   "description": "csound bindings for strudel",
   "main": "index.mjs",
+  "type": "module",
   "publishConfig": {
-    "main": "dist/index.js",
-    "module": "dist/index.mjs"
+    "main": "dist/index.mjs"
   },
   "scripts": {
     "build": "vite build",
diff --git a/packages/csound/vite.config.js b/packages/csound/vite.config.js
index c1d1a2ee0..5df3edc1b 100644
--- a/packages/csound/vite.config.js
+++ b/packages/csound/vite.config.js
@@ -8,8 +8,8 @@ export default defineConfig({
   build: {
     lib: {
       entry: resolve(__dirname, 'index.mjs'),
-      formats: ['es', 'cjs'],
-      fileName: (ext) => ({ es: 'index.mjs', cjs: 'index.js' })[ext],
+      formats: ['es'],
+      fileName: (ext) => ({ es: 'index.mjs' })[ext],
     },
     rollupOptions: {
       external: [...Object.keys(dependencies)],
diff --git a/packages/hydra/package.json b/packages/hydra/package.json
index 97432f673..48189663f 100644
--- a/packages/hydra/package.json
+++ b/packages/hydra/package.json
@@ -1,11 +1,11 @@
 {
   "name": "@strudel/hydra",
-  "version": "1.0.0",
+  "version": "1.0.1",
   "description": "Hydra integration for strudel",
   "main": "hydra.mjs",
+  "type": "module",
   "publishConfig": {
-    "main": "dist/index.js",
-    "module": "dist/index.mjs"
+    "main": "dist/index.mjs"
   },
   "scripts": {
     "server": "node server.js",
diff --git a/packages/hydra/vite.config.js b/packages/hydra/vite.config.js
index 215a91140..0caf1d2fb 100644
--- a/packages/hydra/vite.config.js
+++ b/packages/hydra/vite.config.js
@@ -8,8 +8,8 @@ export default defineConfig({
   build: {
     lib: {
       entry: resolve(__dirname, 'hydra.mjs'),
-      formats: ['es', 'cjs'],
-      fileName: (ext) => ({ es: 'index.mjs', cjs: 'index.js' })[ext],
+      formats: ['es'],
+      fileName: (ext) => ({ es: 'index.mjs' })[ext],
     },
     rollupOptions: {
       external: [...Object.keys(dependencies)],
diff --git a/packages/midi/package.json b/packages/midi/package.json
index aea88d139..4cc2dddb7 100644
--- a/packages/midi/package.json
+++ b/packages/midi/package.json
@@ -1,11 +1,11 @@
 {
   "name": "@strudel/midi",
-  "version": "1.0.0",
+  "version": "1.0.1",
   "description": "Midi API for strudel",
   "main": "index.mjs",
+  "type": "module",
   "publishConfig": {
-    "main": "dist/index.js",
-    "module": "dist/index.mjs"
+    "main": "dist/index.mjs"
   },
   "scripts": {
     "build": "vite build",
diff --git a/packages/midi/vite.config.js b/packages/midi/vite.config.js
index c1d1a2ee0..5df3edc1b 100644
--- a/packages/midi/vite.config.js
+++ b/packages/midi/vite.config.js
@@ -8,8 +8,8 @@ export default defineConfig({
   build: {
     lib: {
       entry: resolve(__dirname, 'index.mjs'),
-      formats: ['es', 'cjs'],
-      fileName: (ext) => ({ es: 'index.mjs', cjs: 'index.js' })[ext],
+      formats: ['es'],
+      fileName: (ext) => ({ es: 'index.mjs' })[ext],
     },
     rollupOptions: {
       external: [...Object.keys(dependencies)],
diff --git a/packages/mini/package.json b/packages/mini/package.json
index 080c42d9d..cb4f459c6 100644
--- a/packages/mini/package.json
+++ b/packages/mini/package.json
@@ -1,12 +1,11 @@
 {
   "name": "@strudel/mini",
-  "version": "1.0.0",
+  "version": "1.0.1",
   "description": "Mini notation for strudel",
   "main": "index.mjs",
   "type": "module",
   "publishConfig": {
-    "main": "dist/index.js",
-    "module": "dist/index.mjs"
+    "main": "dist/index.mjs"
   },
   "scripts": {
     "test": "vitest run",
diff --git a/packages/mini/vite.config.js b/packages/mini/vite.config.js
index c1d1a2ee0..5df3edc1b 100644
--- a/packages/mini/vite.config.js
+++ b/packages/mini/vite.config.js
@@ -8,8 +8,8 @@ export default defineConfig({
   build: {
     lib: {
       entry: resolve(__dirname, 'index.mjs'),
-      formats: ['es', 'cjs'],
-      fileName: (ext) => ({ es: 'index.mjs', cjs: 'index.js' })[ext],
+      formats: ['es'],
+      fileName: (ext) => ({ es: 'index.mjs' })[ext],
     },
     rollupOptions: {
       external: [...Object.keys(dependencies)],
diff --git a/packages/osc/package.json b/packages/osc/package.json
index 9e06bd97a..92725cd42 100644
--- a/packages/osc/package.json
+++ b/packages/osc/package.json
@@ -1,11 +1,11 @@
 {
   "name": "@strudel/osc",
-  "version": "1.0.0",
+  "version": "1.0.1",
   "description": "OSC messaging for strudel",
   "main": "osc.mjs",
+  "type": "module",
   "publishConfig": {
-    "main": "dist/index.js",
-    "module": "dist/index.mjs"
+    "main": "dist/index.mjs"
   },
   "scripts": {
     "server": "node server.js",
diff --git a/packages/osc/vite.config.js b/packages/osc/vite.config.js
index 23e7bb4ea..88e673b31 100644
--- a/packages/osc/vite.config.js
+++ b/packages/osc/vite.config.js
@@ -8,8 +8,8 @@ export default defineConfig({
   build: {
     lib: {
       entry: resolve(__dirname, 'osc.mjs'),
-      formats: ['es', 'cjs'],
-      fileName: (ext) => ({ es: 'index.mjs', cjs: 'index.js' })[ext],
+      formats: ['es'],
+      fileName: (ext) => ({ es: 'index.mjs' })[ext],
     },
     rollupOptions: {
       external: [...Object.keys(dependencies)],
diff --git a/packages/repl/package.json b/packages/repl/package.json
index 009d33d1e..eae203f1a 100644
--- a/packages/repl/package.json
+++ b/packages/repl/package.json
@@ -1,11 +1,10 @@
 {
   "name": "@strudel/repl",
-  "version": "1.0.0",
+  "version": "1.0.1",
   "description": "Strudel REPL as a Web Component",
   "main": "index.mjs",
   "publishConfig": {
-    "main": "dist/index.js",
-    "module": "dist/index.mjs"
+    "main": "dist/index.mjs"
   },
   "scripts": {
     "build": "vite build",
diff --git a/packages/serial/package.json b/packages/serial/package.json
index 927414484..9a98a2535 100644
--- a/packages/serial/package.json
+++ b/packages/serial/package.json
@@ -1,11 +1,11 @@
 {
   "name": "@strudel/serial",
-  "version": "1.0.0",
+  "version": "1.0.1",
   "description": "Webserial API for strudel",
   "main": "serial.mjs",
+  "type": "module",
   "publishConfig": {
-    "main": "dist/index.js",
-    "module": "dist/index.mjs"
+    "main": "dist/index.mjs"
   },
   "scripts": {
     "build": "vite build",
diff --git a/packages/serial/vite.config.js b/packages/serial/vite.config.js
index 2f5dcc393..9e2c287db 100644
--- a/packages/serial/vite.config.js
+++ b/packages/serial/vite.config.js
@@ -8,8 +8,8 @@ export default defineConfig({
   build: {
     lib: {
       entry: resolve(__dirname, 'serial.mjs'),
-      formats: ['es', 'cjs'],
-      fileName: (ext) => ({ es: 'index.mjs', cjs: 'index.js' })[ext],
+      formats: ['es'],
+      fileName: (ext) => ({ es: 'index.mjs' })[ext],
     },
     rollupOptions: {
       external: [...Object.keys(dependencies)],
diff --git a/packages/soundfonts/package.json b/packages/soundfonts/package.json
index dee0ca64e..db8370c36 100644
--- a/packages/soundfonts/package.json
+++ b/packages/soundfonts/package.json
@@ -1,11 +1,10 @@
 {
   "name": "@strudel/soundfonts",
-  "version": "1.0.0",
+  "version": "1.0.1",
   "description": "Soundsfont support for strudel",
   "main": "index.mjs",
   "publishConfig": {
-    "main": "dist/index.js",
-    "module": "dist/index.mjs"
+    "main": "dist/index.mjs"
   },
   "scripts": {
     "build": "vite build",
diff --git a/packages/soundfonts/vite.config.js b/packages/soundfonts/vite.config.js
index c1d1a2ee0..5df3edc1b 100644
--- a/packages/soundfonts/vite.config.js
+++ b/packages/soundfonts/vite.config.js
@@ -8,8 +8,8 @@ export default defineConfig({
   build: {
     lib: {
       entry: resolve(__dirname, 'index.mjs'),
-      formats: ['es', 'cjs'],
-      fileName: (ext) => ({ es: 'index.mjs', cjs: 'index.js' })[ext],
+      formats: ['es'],
+      fileName: (ext) => ({ es: 'index.mjs' })[ext],
     },
     rollupOptions: {
       external: [...Object.keys(dependencies)],
diff --git a/packages/superdough/package.json b/packages/superdough/package.json
index deb75784f..f1abd95bd 100644
--- a/packages/superdough/package.json
+++ b/packages/superdough/package.json
@@ -1,12 +1,11 @@
 {
   "name": "superdough",
-  "version": "1.0.0",
+  "version": "1.0.1",
   "description": "simple web audio synth and sampler intended for live coding. inspired by superdirt and webdirt.",
   "main": "index.mjs",
   "type": "module",
   "publishConfig": {
-    "main": "dist/index.cjs",
-    "module": "dist/index.mjs"
+    "main": "dist/index.mjs"
   },
   "directories": {
     "example": "examples"
diff --git a/packages/superdough/vite.config.js b/packages/superdough/vite.config.js
index dd71cf678..d94e37f41 100644
--- a/packages/superdough/vite.config.js
+++ b/packages/superdough/vite.config.js
@@ -8,7 +8,7 @@ export default defineConfig({
   build: {
     lib: {
       entry: resolve(__dirname, 'index.mjs'),
-      formats: ['es', 'cjs'],
+      formats: ['es'],
       fileName: (ext) => ({ es: 'index.mjs', cjs: 'index.cjs' })[ext],
     },
     rollupOptions: {
diff --git a/packages/tonal/package.json b/packages/tonal/package.json
index 918f99659..e44182280 100644
--- a/packages/tonal/package.json
+++ b/packages/tonal/package.json
@@ -1,11 +1,10 @@
 {
   "name": "@strudel/tonal",
-  "version": "1.0.0",
+  "version": "1.0.1",
   "description": "Tonal functions for strudel",
   "main": "index.mjs",
   "publishConfig": {
-    "main": "dist/index.js",
-    "module": "dist/index.mjs"
+    "main": "dist/index.mjs"
   },
   "scripts": {
     "build": "vite build",
diff --git a/packages/tonal/vite.config.js b/packages/tonal/vite.config.js
index c1d1a2ee0..5df3edc1b 100644
--- a/packages/tonal/vite.config.js
+++ b/packages/tonal/vite.config.js
@@ -8,8 +8,8 @@ export default defineConfig({
   build: {
     lib: {
       entry: resolve(__dirname, 'index.mjs'),
-      formats: ['es', 'cjs'],
-      fileName: (ext) => ({ es: 'index.mjs', cjs: 'index.js' })[ext],
+      formats: ['es'],
+      fileName: (ext) => ({ es: 'index.mjs' })[ext],
     },
     rollupOptions: {
       external: [...Object.keys(dependencies)],
diff --git a/packages/transpiler/package.json b/packages/transpiler/package.json
index 662565a92..12038fc4b 100644
--- a/packages/transpiler/package.json
+++ b/packages/transpiler/package.json
@@ -1,11 +1,11 @@
 {
   "name": "@strudel/transpiler",
-  "version": "1.0.0",
+  "version": "1.0.1",
   "description": "Transpiler for strudel user code. Converts syntactically correct but semantically meaningless JS into evaluatable strudel code.",
   "main": "index.mjs",
+  "type": "module",
   "publishConfig": {
-    "main": "dist/index.js",
-    "module": "dist/index.mjs"
+    "main": "dist/index.mjs"
   },
   "scripts": {
     "build": "vite build",
diff --git a/packages/transpiler/vite.config.js b/packages/transpiler/vite.config.js
index c1d1a2ee0..5df3edc1b 100644
--- a/packages/transpiler/vite.config.js
+++ b/packages/transpiler/vite.config.js
@@ -8,8 +8,8 @@ export default defineConfig({
   build: {
     lib: {
       entry: resolve(__dirname, 'index.mjs'),
-      formats: ['es', 'cjs'],
-      fileName: (ext) => ({ es: 'index.mjs', cjs: 'index.js' })[ext],
+      formats: ['es'],
+      fileName: (ext) => ({ es: 'index.mjs' })[ext],
     },
     rollupOptions: {
       external: [...Object.keys(dependencies)],
diff --git a/packages/web/package.json b/packages/web/package.json
index 10e502905..68ced2d26 100644
--- a/packages/web/package.json
+++ b/packages/web/package.json
@@ -1,11 +1,10 @@
 {
   "name": "@strudel/web",
-  "version": "1.0.0",
+  "version": "1.0.1",
   "description": "Easy to setup, opiniated bundle of Strudel for the browser.",
   "main": "web.mjs",
   "publishConfig": {
-    "main": "dist/index.js",
-    "module": "dist/index.mjs"
+    "main": "dist/index.mjs"
   },
   "scripts": {
     "build": "vite build",
diff --git a/packages/web/vite.config.js b/packages/web/vite.config.js
index 02873d65c..7fe99498e 100644
--- a/packages/web/vite.config.js
+++ b/packages/web/vite.config.js
@@ -8,8 +8,8 @@ export default defineConfig({
   build: {
     lib: {
       entry: resolve(__dirname, 'web.mjs'),
-      formats: ['es', 'cjs'],
-      fileName: (ext) => ({ es: 'index.mjs', cjs: 'index.js' })[ext],
+      formats: ['es'],
+      fileName: (ext) => ({ es: 'index.mjs' })[ext],
     },
     rollupOptions: {
       external: [...Object.keys(dependencies)],
diff --git a/packages/webaudio/package.json b/packages/webaudio/package.json
index b27ea94b9..dce539613 100644
--- a/packages/webaudio/package.json
+++ b/packages/webaudio/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@strudel/webaudio",
-  "version": "1.0.0",
+  "version": "1.0.1",
   "description": "Web Audio helpers for Strudel",
   "main": "index.mjs",
   "type": "module",
@@ -8,8 +8,7 @@
     "example": "examples"
   },
   "publishConfig": {
-    "main": "dist/index.js",
-    "module": "dist/index.mjs"
+    "main": "dist/index.mjs"
   },
   "scripts": {
     "example": "npx parcel examples/repl.html",
diff --git a/packages/webaudio/vite.config.js b/packages/webaudio/vite.config.js
index c1d1a2ee0..5df3edc1b 100644
--- a/packages/webaudio/vite.config.js
+++ b/packages/webaudio/vite.config.js
@@ -8,8 +8,8 @@ export default defineConfig({
   build: {
     lib: {
       entry: resolve(__dirname, 'index.mjs'),
-      formats: ['es', 'cjs'],
-      fileName: (ext) => ({ es: 'index.mjs', cjs: 'index.js' })[ext],
+      formats: ['es'],
+      fileName: (ext) => ({ es: 'index.mjs' })[ext],
     },
     rollupOptions: {
       external: [...Object.keys(dependencies)],
diff --git a/packages/xen/package.json b/packages/xen/package.json
index 8f328ba77..8ee5d8a38 100644
--- a/packages/xen/package.json
+++ b/packages/xen/package.json
@@ -1,11 +1,11 @@
 {
   "name": "@strudel/xen",
-  "version": "1.0.0",
+  "version": "1.0.1",
   "description": "Xenharmonic API for strudel",
   "main": "index.mjs",
+  "type": "module",
   "publishConfig": {
-    "main": "dist/index.js",
-    "module": "dist/index.mjs"
+    "main": "dist/index.mjs"
   },
   "scripts": {
     "build": "vite build",
diff --git a/packages/xen/vite.config.js b/packages/xen/vite.config.js
index c1d1a2ee0..5df3edc1b 100644
--- a/packages/xen/vite.config.js
+++ b/packages/xen/vite.config.js
@@ -8,8 +8,8 @@ export default defineConfig({
   build: {
     lib: {
       entry: resolve(__dirname, 'index.mjs'),
-      formats: ['es', 'cjs'],
-      fileName: (ext) => ({ es: 'index.mjs', cjs: 'index.js' })[ext],
+      formats: ['es'],
+      fileName: (ext) => ({ es: 'index.mjs' })[ext],
     },
     rollupOptions: {
       external: [...Object.keys(dependencies)],