refactor: use webpack to compile and package

webpack.config.js

@@ -15,7 +15,7 @@ externals.push('vscode');
 
 module.exports = {
   mode: 'production',
-  entry: __dirname + '/src/main.js',
+  entry: __dirname + '/src/main.ts',
   output: {
     path: path.resolve(__dirname, 'dist'),
     filename: 'extension.js',
@@ -27,14 +27,14 @@ module.exports = {
   module: {
     rules: [
       {
-        test: /\.js$/,
-        loader: 'babel-loader',
+        test: /\.ts$/,
+        loader: 'ts-loader',
         exclude: /node_modules/
       }
     ]
   },
   resolve: {
     modules: [path.resolve('./node_modules'), path.resolve('./src')],
-    extensions: ['.js']
+    extensions: ['.ts', '.js']
   }
 };