2 files changed, 13 insertions, 0 deletions
diff --git a/platform/javascript/js/engine/config.js b/platform/javascript/js/engine/config.js
index ba61b14eb7..2e5e1ed0d1 100644
--- a/platform/javascript/js/engine/config.js
+++ b/platform/javascript/js/engine/config.js
@@ -107,6 +107,13 @@ const InternalConfig = function (initConfig) { // eslint-disable-line no-unused-
 		 */
 		experimentalVK: false,
 		/**
+		 * The progressive web app service worker to install.
+		 * @memberof EngineConfig
+		 * @default
+		 * @type {string}
+		 */
+		serviceWorker: '',
+		/**
 		 * @ignore
 		 * @type {Array.<string>}
 		 */
@@ -225,6 +232,8 @@ const InternalConfig = function (initConfig) { // eslint-disable-line no-unused-
 	 */
 	Config.prototype.update = function (opts) {
 		const config = opts || {};
+		// NOTE: We must explicitly pass the default, accessing it via
+		// the key will fail due to closure compiler renames.
 		function parse(key, def) {
 			if (typeof (config[key]) === 'undefined') {
 				return def;
@@ -247,6 +256,7 @@ const InternalConfig = function (initConfig) { // eslint-disable-line no-unused-
 		this.persistentDrops = parse('persistentDrops', this.persistentDrops);
 		this.experimentalVK = parse('experimentalVK', this.experimentalVK);
 		this.focusCanvas = parse('focusCanvas', this.focusCanvas);
+		this.serviceWorker = parse('serviceWorker', this.serviceWorker);
 		this.gdnativeLibs = parse('gdnativeLibs', this.gdnativeLibs);
 		this.fileSizes = parse('fileSizes', this.fileSizes);
 		this.args = parse('args', this.args);
diff --git a/platform/javascript/js/engine/engine.js b/platform/javascript/js/engine/engine.js
index 17a8df9e29..d2ba595083 100644
--- a/platform/javascript/js/engine/engine.js
+++ b/platform/javascript/js/engine/engine.js
@@ -189,6 +189,9 @@ const Engine = (function () {
 							preloader.preloadedFiles.length = 0; // Clear memory
 							me.rtenv['callMain'](me.config.args);
 							initPromise = null;
+							if (me.config.serviceWorker && 'serviceWorker' in navigator) {
+								navigator.serviceWorker.register(me.config.serviceWorker);
+							}
 							resolve();
 						});
 					});