add encoding polyfill for Edge

Author: JasperDeSutter

wasm-demo/www/index.js

@@ -49,6 +49,13 @@ import 'monaco-editor/esm/vs/editor/standalone/browser/toggleHighContrast/toggle
 import * as monaco from 'monaco-editor/esm/vs/editor/editor.api';
 import * as rustConf from 'monaco-editor/esm/vs/basic-languages/rust/rust';
 import exampleCode from './example-code';
+import encoding from 'text-encoding';
+
+if (typeof TextEncoder === "undefined") {
+    // Edge polyfill, https://rustwasm.github.io/docs/wasm-bindgen/reference/browser-support.html
+    self.TextEncoder = encoding.TextEncoder
+    self.TextDecoder = encoding.TextDecoder
+}
 
 import './index.css';
 

wasm-demo/www/package-lock.json

@@ -10,6 +10,7 @@
   "license": "(MIT OR Apache-2.0)",
   "dependencies": {
     "monaco-editor": "^0.18.1",
+    "text-encoding": "^0.7.0",
     "wasm_demo": "file:../pkg"
   },
   "devDependencies": {