1 files changed, 40 insertions, 0 deletions
diff --git a/devtools/server/actors/manifest.js b/devtools/server/actors/manifest.js
new file mode 100644
index 0000000000..5436d4a53a
--- /dev/null
+++ b/devtools/server/actors/manifest.js
@@ -0,0 +1,40 @@
+/* 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/. */
+
+"use strict";
+
+const { Actor } = require("resource://devtools/shared/protocol.js");
+const {
+  manifestSpec,
+} = require("resource://devtools/shared/specs/manifest.js");
+
+const lazy = {};
+
+ChromeUtils.defineESModuleGetters(lazy, {
+  ManifestObtainer: "resource://gre/modules/ManifestObtainer.sys.mjs",
+});
+
+/**
+ * An actor for a Web Manifest
+ */
+class ManifestActor extends Actor {
+  constructor(conn, targetActor) {
+    super(conn, manifestSpec);
+    this.targetActor = targetActor;
+  }
+
+  async fetchCanonicalManifest() {
+    try {
+      const manifest = await lazy.ManifestObtainer.contentObtainManifest(
+        this.targetActor.window,
+        { checkConformance: true }
+      );
+      return { manifest };
+    } catch (error) {
+      return { manifest: null, errorMessage: error.message };
+    }
+  }
+}
+
+exports.ManifestActor = ManifestActor;