Download hot chunk using importScripts if in a web worker

Author: elliottsj

lib/JsonpMainTemplate.runtime.js

@@ -10,6 +10,16 @@ module.exports = function() {
 	}
 
 	function hotDownloadUpdateChunk(chunkId) { // eslint-disable-line no-unused-vars
+		if(typeof WorkerGlobalScope !== 'undefined' && self instanceof WorkerGlobalScope) {
+			// In a web worker
+			try {
+				importScripts($require$.p + $hotChunkFilename$);
+			} catch (e) {
+				console.warn(e);
+			}
+			return;
+		}
+
 		var head = document.getElementsByTagName("head")[0];
 		var script = document.createElement("script");
 		script.type = "text/javascript";