Bug 1620280 - [devtools] Bypass SourceQueue as it should be made redundant with ResourceWatcher throttling. r=jdescottes

Differential Revision: https://phabricator.services.mozilla.com/D90430

devtools/client/debugger/src/client/firefox.js

@@ -8,7 +8,6 @@ import { setupCommands, clientCommands } from "./firefox/commands";
 import { setupEvents, clientEvents } from "./firefox/events";
 import { features, prefs } from "../utils/prefs";
 import { prepareSourcePayload } from "./firefox/create";
-import sourceQueue from "../utils/source-queue";
 
 let actions;
 let targetList;
@@ -49,12 +48,6 @@ export async function onConnect(
   await resourceWatcher.watchResources([resourceWatcher.TYPES.SOURCE], {
     onAvailable: onSourceAvailable,
   });
-
-  // Tests like browser_webconsole_eval_sources.js using viewSourceInDebugger
-  // are expecting to find sources in the debugger store immediately for existing sources.
-  // So flush the queue immediately after calling watchResources, which will
-  // process all existing sources.
-  await sourceQueue.flush();
 }
 
 export function onDisconnect() {
@@ -143,22 +136,14 @@ function onTargetDestroyed({ targetFront }): void {
 }
 
 async function onSourceAvailable(sources) {
-  for (const source of sources) {
+  const frontendSources = await Promise.all(
-    const threadFront = await source.targetFront.getFront("thread");
+    sources.map(async source => {
-    const frontendSource = prepareSourcePayload(threadFront, source);
+      const threadFront = await source.targetFront.getFront("thread");
-
+      const frontendSource = prepareSourcePayload(threadFront, source);
-    // Use SourceQueue, which will throttle all incoming sources and only display merged set of
+      return frontendSource;
-    // action every 100ms. Unless SourceQueue.flush is manually called when:
+    })
-    // - the thread is paused and we have to retrieve the source immediately
+  );
-    // - after fetching all existing sources (tests expect sources to be in redux store immediately)
+  await actions.newGeneratedSources(frontendSources);
-    //
-    // This throttling code could probably be migrated in the ResourceWatcher API
-    // so that we use a generic throttling algorithm for all resources.
-    sourceQueue.queue({
-      type: "generated",
-      data: frontendSource,
-    });
-  }
 }
 
 export { clientCommands, clientEvents };

devtools/client/debugger/src/utils/source-queue.js

@@ -7,6 +7,7 @@
 import { throttle } from "lodash";
 import type { QueuedSourceData } from "../types";
 
+// This SourceQueue module is now only used for source mapped sources
 let newQueuedSources;
 let queuedSources;
 let currentWork;