Replace TextEncoder polyfill

src/lib/default-project/index.js

@@ -4,16 +4,10 @@ import projectData from './project-data';
 import backdrop from '!raw-loader!./cd21514d0531fdffb22204e0ec5ed84a.svg';
 import costume1 from '!raw-loader!./14e46ec3e2ba471c2adfe8f119052307.svg';
 /* eslint-enable import/no-unresolved */
+import TextEncoder from '../tw-text-encoder';
 
 const defaultProject = translator => {
-    let _TextEncoder;
-    if (typeof TextEncoder === 'undefined') {
-        _TextEncoder = require('text-encoding').TextEncoder;
-    } else {
-        /* global TextEncoder */
-        _TextEncoder = TextEncoder;
-    }
-    const encoder = new _TextEncoder();
+    const encoder = new TextEncoder();
 
     const projectJson = projectData(translator);
     return [{

src/lib/tw-missing-project/index.js

@@ -3,18 +3,12 @@ import backdrop from '!raw-loader!./c17163c6954e9422ac2405de4c9d68c8.svg';
 /* eslint-enable import/no-unresolved */
 
 import projectData from './project-data';
+import TextEncoder from '../tw-text-encoder';
 
 export const MISSING_PROJECT_ID = '__missing__';
 
 const missingProject = () => {
-    let _TextEncoder;
-    if (typeof TextEncoder === 'undefined') {
-        _TextEncoder = require('text-encoding').TextEncoder;
-    } else {
-        /* global TextEncoder */
-        _TextEncoder = TextEncoder;
-    }
-    const encoder = new _TextEncoder();
+    const encoder = new TextEncoder();
 
     const projectJson = projectData();
     return [{

src/lib/tw-text-encoder.js

@@ -0,0 +1,20 @@
+const _TextEncoder = typeof TextEncoder === 'function' ? TextEncoder : class TextEncoder {
+    constructor (encoding) {
+        if (typeof encoding !== 'undefined' && encoding !== null && encoding !== 'utf-8' && encoding !== 'utf8') {
+            throw new Error('Encoding is not supported');
+        }
+        this.encoding = 'utf-8';
+    }
+    encode (str) {
+        if (typeof str !== 'string') {
+            throw new TypeError('Argument is not a string');
+        }
+        const arr = new Uint8Array(str.length);
+        for (let i = 0; i < str.length; i++) {
+            arr[i] = str.charCodeAt(i);
+        }
+        return arr;
+    }
+};
+
+export default _TextEncoder;