Revert "Merge branch 'add-typescript' into 'master'"

This reverts merge request !15264

changelogs/unreleased/add-typescript.yml

----
-title: Adds typescript support
-merge_request:
-author:
-type: added

config/webpack.config.js

@@ -107,10 +107,6 @@ var config = {
         test: /\.vue$/,
         loader: 'vue-loader',
       },
-      {
-        test: /\.ts$/,
-        loader: 'ts-loader',
-      },
       {
         test: /\.svg$/,
         loader: 'raw-loader',
@@ -256,7 +252,7 @@ var config = {
   ],
 
   resolve: {
-    extensions: ['.js', '.ts'],
+    extensions: ['.js'],
     alias: {
       '~':              path.join(ROOT_PATH, 'app/assets/javascripts'),
       'emojis':         path.join(ROOT_PATH, 'fixtures/emojis'),

package.json

@@ -61,8 +61,6 @@
     "three-orbit-controls": "^82.1.0",
     "three-stl-loader": "^1.0.4",
     "timeago.js": "^2.0.5",
-    "ts-loader": "^3.1.1",
-    "typescript": "^2.6.1",
     "underscore": "^1.8.3",
     "url-loader": "^0.5.8",
     "visibilityjs": "^1.2.4",

tsconfig.json

-{
-  "compilerOptions": {
-    "target": "es5",
-    "strict": true,
-    "module": "es2015",
-    "moduleResolution": "node"
-  }
-}
\ No newline at end of file