1 files changed, 23 insertions, 0 deletions
diff --git a/devtools/client/debugger/src/utils/selected-location.js b/devtools/client/debugger/src/utils/selected-location.js
new file mode 100644
index 0000000000..a07877449f
--- /dev/null
+++ b/devtools/client/debugger/src/utils/selected-location.js
@@ -0,0 +1,23 @@
+/* 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/>. */
+
+// @flow
+
+import { isOriginalId } from "devtools-source-map";
+import type { SourceLocation, MappedLocation, Source } from "../types";
+
+export function getSelectedLocation(
+  mappedLocation: MappedLocation,
+  context: ?(Source | SourceLocation)
+): SourceLocation {
+  if (!context) {
+    return mappedLocation.location;
+  }
+
+  // $FlowIgnore
+  const sourceId = context.sourceId || context.id;
+  return isOriginalId(sourceId)
+    ? mappedLocation.location
+    : mappedLocation.generatedLocation;
+}