patterns can now be async

repl/src/App.tsx

@@ -51,11 +51,11 @@ function App() {
   // set active pattern on ctrl+enter
   useLayoutEffect(() => {
     // TODO: make sure this is only fired when editor has focus
-    const handleKeyPress = (e: any) => {
+    const handleKeyPress = async (e: any) => {
       if (e.ctrlKey || e.altKey) {
         switch (e.code) {
           case 'Enter':
-            activateCode();
+            await activateCode();
             !cycle.started && cycle.start();
             break;
           case 'Period':
@@ -88,11 +88,11 @@ function App() {
         </div>
         <div className="flex space-x-4">
           <button
-            onClick={() => {
+            onClick={async () => {
               const _code = getRandomTune();
               console.log('tune', _code); // uncomment this to debug when random code fails
               setCode(_code);
-              const parsed = evaluate(_code);
+              const parsed = await evaluate(_code);
               // Tone.Transport.cancel(Tone.Transport.seconds);
               setPattern(parsed.pattern);
             }}

repl/src/evaluate.ts

@@ -29,10 +29,10 @@ hackLiteral(String, ['pure', 'p'], bootstrapped.pure); // comment out this line
 // this will add everything to global scope, which is accessed by eval
 Object.assign(globalThis, bootstrapped, Tone, toneHelpers);
 
-export const evaluate: any = (code: string) => {
+export const evaluate: any = async (code: string) => {
   const shapeshifted = shapeshifter(code); // transform syntactically correct js code to semantically usable code
   // console.log('shapeshifted', shapeshifted);
-  let evaluated = eval(shapeshifted);
+  let evaluated = await eval(shapeshifted);
   if (typeof evaluated === 'function') {
     evaluated = evaluated();
   }

repl/src/useRepl.ts

@@ -21,15 +21,15 @@ function useRepl({ tune, defaultSynth, autolink = true, onEvent, onDraw }: any)
   const [pattern, setPattern] = useState<Pattern>();
   const dirty = code !== activeCode || error;
   const generateHash = () => encodeURIComponent(btoa(code));
-  const activateCode = (_code = code) => {
-    !cycle.started && cycle.start();
-    broadcast({ type: 'start', from: id });
+  const activateCode = async (_code = code) => {
     if (activeCode && !dirty) {
       setError(undefined);
       return;
     }
     try {
-      const parsed = evaluate(_code);
+      const parsed = await evaluate(_code);
+      !cycle.started && cycle.start();
+      broadcast({ type: 'start', from: id });
       setPattern(() => parsed.pattern);
       if (autolink) {
         window.location.hash = '#' + encodeURIComponent(btoa(code));