make sure draw logic works with multiple repls

packages/codemirror/codemirror.mjs

@@ -154,9 +154,9 @@ export class StrudelMirror {
 
     this.prebaked = prebake();
     autodraw && this.drawFirstFrame();
-
     this.repl = repl({
       ...replOptions,
+      id,
       onToggle: (started) => {
         replOptions?.onToggle?.(started);
         if (started) {
@@ -171,11 +171,11 @@ export class StrudelMirror {
         } else {
           this.drawer.stop();
           updateMiniLocations(this.editor, []);
-          cleanupDraw(false);
+          cleanupDraw(false, id);
         }
       },
       beforeEval: async () => {
-        cleanupDraw();
+        cleanupDraw(true, id);
         this.painters = [];
         const self = this;
         // this is similar to repl.mjs > injectPatternMethods

packages/core/evaluate.mjs

@@ -37,11 +37,11 @@ function safeEval(str, options = {}) {
   return Function(body)();
 }
 
-export const evaluate = async (code, transpiler) => {
+export const evaluate = async (code, transpiler, transpilerOptions) => {
   let meta = {};
   if (transpiler) {
     // transform syntactically correct js code to semantically usable code
-    const transpiled = transpiler(code);
+    const transpiled = transpiler(code, transpilerOptions);
     code = transpiled.output;
     meta = transpiled;
   }

packages/core/repl.mjs

@@ -19,6 +19,7 @@ export function repl({
   sync = false,
   setInterval,
   clearInterval,
+  id,
 }) {
   const state = {
     schedulerError: undefined,
@@ -32,6 +33,10 @@ export function repl({
     started: false,
   };
 
+  const transpilerOptions = {
+    id,
+  };
+
   const updateState = (update) => {
     Object.assign(state, update);
     state.isDirty = state.code !== state.activeCode;
@@ -139,9 +144,10 @@ export function repl({
     try {
       updateState({ code, pending: true });
       await injectPatternMethods();
+      setTime(() => scheduler.now()); // TODO: refactor?
       await beforeEval?.({ code });
       shouldHush && hush();
-      let { pattern, meta } = await _evaluate(code, transpiler);
+      let { pattern, meta } = await _evaluate(code, transpiler, transpilerOptions);
       if (Object.keys(pPatterns).length) {
         pattern = stack(...Object.values(pPatterns));
       }

packages/draw/draw.mjs

@@ -36,8 +36,8 @@ function stopAnimationFrame(id) {
     delete animationFrames[id];
   }
 }
-function stopAllAnimations() {
-  Object.keys(animationFrames).forEach((id) => stopAnimationFrame(id));
+function stopAllAnimations(replID) {
+  Object.keys(animationFrames).forEach((id) => (!replID || id.startsWith(replID)) && stopAnimationFrame(id));
 }
 
 let memory = {};
@@ -72,13 +72,10 @@ Pattern.prototype.draw = function (fn, options) {
   return this;
 };
 
-export const cleanupDraw = (clearScreen = true) => {
+export const cleanupDraw = (clearScreen = true, id) => {
   const ctx = getDrawContext();
   clearScreen && ctx.clearRect(0, 0, ctx.canvas.width, ctx.canvas.width);
-  stopAllAnimations();
-  if (window.strudelScheduler) {
-    clearInterval(window.strudelScheduler);
-  }
+  stopAllAnimations(id);
 };
 
 Pattern.prototype.onPaint = function () {

packages/draw/pianoroll.mjs

@@ -266,7 +266,7 @@ export function getDrawOptions(drawTime, options = {}) {
   let [lookbehind, lookahead] = drawTime;
   lookbehind = Math.abs(lookbehind);
   const cycles = lookahead + lookbehind;
-  const playhead = lookbehind / cycles;
+  const playhead = cycles !== 0 ? lookbehind / cycles : 0;
   return { fold: 1, ...options, cycles, playhead };
 }
 

packages/transpiler/transpiler.mjs

@@ -69,6 +69,7 @@ export function transpiler(input, options = {}) {
           to: node.end,
           index,
           type,
+          id: options.id,
         };
         emitWidgets && widgets.push(widgetConfig);
         return this.replace(widgetWithLocation(node, widgetConfig));
@@ -162,7 +163,7 @@ export function getWidgetID(widgetConfig) {
   // that means, if we use the index index of line position as id, less garbage is generated
   // return `widget_${widgetConfig.to}`; // more gargabe
   //return `widget_${widgetConfig.index}_${widgetConfig.to}`; // also more garbage
-  return `widget_${widgetConfig.type}_${widgetConfig.index}`; // less garbage
+  return `${widgetConfig.id || ''}_widget_${widgetConfig.type}_${widgetConfig.index}`; // less garbage
 }
 
 function widgetWithLocation(node, widgetConfig) {

website/src/docs/MiniRepl.jsx

@@ -34,7 +34,7 @@ export function MiniRepl({
   const canvasId = useMemo(() => `canvas-${id}`, [id]);
   const shouldDraw = !!punchcard || !!claviature;
   const shouldShowCanvas = !!punchcard;
-  const drawTime = punchcard ? [0, 4] : [0, 0];
+  const drawTime = punchcard ? [0, 4] : [-2, 2];
   const [activeNotes, setActiveNotes] = useState([]);
 
   const init = useCallback(({ code, shouldDraw }) => {