add scope

packages/core/examples/metro.html

@@ -1,8 +1,8 @@
 <input
   type="text"
   id="text"
-  value="cat(880, 440, 220, 440).div(2).slow(2)"
-  style="width: 100%; font-size: 2em; outline: none; margin-bottom: 10px"
+  value="sequence(888, [432, 666], 444, 666).div(slowcat(3,2).slow(2)).off(1/8,mul(2)).off(1/4,mul(3))"
+  style="width: 100%; outline: none; margin-bottom: 10px"
   spellcheck="false"
 />
 <button id="start">start</button>
@@ -66,6 +66,7 @@
   const strudel = await import('https://cdn.skypack.dev/@strudel.cycles/core@0.0.2');
   const { cat, State, TimeSpan } = strudel;
   let pattern;
+  Object.assign(window, strudel); // add strudel to eval scope
   const input = document.getElementById('text');
   const evaluate = () => {
     pattern = eval(input.value);