1 files changed, 37 insertions, 0 deletions
diff --git a/devtools/client/debugger/src/utils/source-queue.js b/devtools/client/debugger/src/utils/source-queue.js
new file mode 100644
index 0000000000..b871dc14e5
--- /dev/null
+++ b/devtools/client/debugger/src/utils/source-queue.js
@@ -0,0 +1,37 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at <http://mozilla.org/MPL/2.0/>. */
+
+const { throttle } = require("devtools/shared/throttle");
+
+// This SourceQueue module is now only used for source mapped sources
+let newOriginalQueuedSources;
+let queuedOriginalSources;
+let currentWork;
+
+async function dispatchNewSources() {
+  const sources = queuedOriginalSources;
+  queuedOriginalSources = [];
+  currentWork = await newOriginalQueuedSources(sources);
+}
+
+const queue = throttle(dispatchNewSources, 100);
+
+export default {
+  initialize: actions => {
+    newOriginalQueuedSources = actions.newOriginalSources;
+    queuedOriginalSources = [];
+  },
+  queueOriginalSources: sources => {
+    if (sources.length) {
+      queuedOriginalSources = queuedOriginalSources.concat(sources);
+      queue();
+    }
+  },
+
+  flush: () => Promise.all([queue.flush(), currentWork]),
+  clear: () => {
+    queuedOriginalSources = [];
+    queue.cancel();
+  },
+};