add typings for webpack

Author: rebornix

package.json

@@ -260,6 +260,7 @@
     "@types/lodash": "^4.14.106",
     "@types/mocha": "^5.2.2",
     "@types/node": "*",
+    "@types/webpack": "^4.4.10",
     "css-loader": "^0.28.11",
     "del": "^3.0.0",
     "gulp": "3.9.1",

webpack.config.js

@@ -2,9 +2,15 @@
  *  Copyright (c) Microsoft Corporation. All rights reserved.
  *  Licensed under the MIT License. See License.txt in the project root for license information.
  *--------------------------------------------------------------------------------------------*/
+
+//@ts-check
+
 const path = require('path');
+const webpack = require('webpack');
 
-module.exports = [{
+/** @type webpack.Configuration */
+const webview = {
+	name: 'webiew',
 	entry: {
 		index: './preview-src/index.ts'
 	},
@@ -29,7 +35,11 @@ module.exports = [{
 		filename: '[name].js',
 		path: path.resolve(__dirname, 'media')
 	}
-}, {
+};
+
+/** @type webpack.Configuration */
+const extension = {
+	name: 'extension',
 	target: 'node',
 	entry: {
 		extension: './src/extension.ts'
@@ -59,4 +69,6 @@ module.exports = [{
 	externals: {
 		'vscode': 'commonjs vscode',
 	},
-}];
+};
+
+module.exports = [webview, extension];

yarn.lock

@@ -56,6 +56,25 @@
   version "10.3.2"
   resolved "https://registry.yarnpkg.com/@types/node/-/node-10.3.2.tgz#3840ec6c12556fdda6e0e6d036df853101d732a4"
 
+"@types/tapable@*":
+  version "1.0.4"
+  resolved "https://registry.yarnpkg.com/@types/tapable/-/tapable-1.0.4.tgz#b4ffc7dc97b498c969b360a41eee247f82616370"
+
+"@types/uglify-js@*":
+  version "3.0.3"
+  resolved "https://registry.yarnpkg.com/@types/uglify-js/-/uglify-js-3.0.3.tgz#801a5ca1dc642861f47c46d14b700ed2d610840b"
+  dependencies:
+    source-map "^0.6.1"
+
+"@types/webpack@^4.4.10":
+  version "4.4.10"
+  resolved "https://registry.yarnpkg.com/@types/webpack/-/webpack-4.4.10.tgz#2ecf12589142bc531549140612815b7d8b076358"
+  dependencies:
+    "@types/node" "*"
+    "@types/tapable" "*"
+    "@types/uglify-js" "*"
+    source-map "^0.6.0"
+
 "@types/ws@^5.1.2":
   version "5.1.2"
   resolved "https://registry.yarnpkg.com/@types/ws/-/ws-5.1.2.tgz#f02d3b1cd46db7686734f3ce83bdf46c49decd64"