Merge pull request #103 from audiojs/copilot/support-blob-urls-in-audio-context

Support blob URLs in AudioWorklet addModule

Author: dy

src/AudioWorklet.js

@@ -376,6 +376,10 @@ class AudioWorklet {
       return meta.includes('base64') ? atob(body) : decodeURIComponent(body)
     }
 
+    if (url.startsWith('blob:')) {
+      return await fetch(url).then(res => res.text())
+    }
+
     // Dynamic import fs/path — works in Node.js, throws in browser
     let fs, path
     try { fs = await import('fs'); path = await import('path') } catch {

test/AudioWorklet.test.js

@@ -160,6 +160,22 @@ test('AudioWorklet > addModule with base64 data URI', async () => {
   ok(node, 'base64 data URI works')
 })
 
+test('AudioWorklet > addModule with blob URI', async () => {
+  let ctx = await mkCtx()
+  let code = `class P extends AudioWorkletProcessor {
+    process() { return true }
+  }; registerProcessor('blob-proc', P)`
+  let url = URL.createObjectURL(new Blob([code], { type: 'text/javascript' }))
+
+  try {
+    await ctx.audioWorklet.addModule(url)
+    let node = new AudioWorkletNode(ctx, 'blob-proc')
+    ok(node, 'blob URI works')
+  } finally {
+    URL.revokeObjectURL(url)
+  }
+})
+
 test('AudioWorklet > message ports are entangled', async () => {
   let ctx = await mkCtx()
   await ctx.audioWorklet.addModule(scope => scope.registerProcessor('msg', AudioWorkletProcessor))