Build ipywidgets and copy output into right place

src/ipywidgets/.gitignore

@@ -0,0 +1,9 @@
+.DS_Store
+out
+dist
+**/node_modules
+.nyc_output
+npm-debug.log
+bin/**
+obj/**
+tmp/**

src/ipywidgets/package.json

@@ -3,9 +3,9 @@
   "version": "1.0.0",
   "main": "index.js",
   "scripts": {
-    "build": "npm run clean && tsc",
-    "buildx": "npm run clean && tsc && node scripts/copyfiles.js && webpack && npm run copyFile",
-    "clean": "rimraf out && rimraf tsconfig.tsbuildinfo && rimraf built",
+    "build": "npm run clean && tsc && node scripts/copyfiles.js && webpack --mode='production' && npm run copyFile && npm run clean",
+    "build:dev": "npm run clean && tsc && node scripts/copyfiles.js && webpack --mode='development' && npm run copyFile && npm run clean",
+    "clean": "rimraf out && rimraf tsconfig.tsbuildinfo && rimraf dist",
     "lint": "tslint --project tsconfig.json",
     "copyFile": "node scripts/copyBuild.js"
   },

src/ipywidgets/scripts/copyBuild.js

@@ -1,6 +1,9 @@
-// Copyright (c) Jupyter Development Team.
-// Distributed under the terms of the Modified BSD License.
+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT License.
 
-var fs = require('fs');
-// TODO: To be fixed when integrating ipywidgets with extension.
-// fs.copyFileSync('built/ipywidgets.js', '/Users/donjayamanne/.vscode-insiders/extensions/pythonVSCode/out/datascience-ui/native-editor/ipywidgets.js');
+'use strict';
+
+const fs = require('fs');
+const path = require('path');
+
+fs.copyFileSync(path.resolve(__dirname, '..', 'dist', 'ipywidgets', 'ipywidgets.js'), path.resolve(__dirname, '..', '..', '..', 'out', 'datascience-ui', 'native-editor', 'ipywidgets.js'));

src/ipywidgets/scripts/copyfiles.js

@@ -1,5 +1,7 @@
-// Copyright (c) Jupyter Development Team.
-// Distributed under the terms of the Modified BSD License.
+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT License.
+
+'use strict';
 
 var fs = require('fs');
 fs.copyFileSync('src/widgets.css', 'out/widgets.css');

src/ipywidgets/webpack.config.js

@@ -13,7 +13,7 @@ module.exports = {
     entry: './out/index.js',
     output: {
         filename: 'ipywidgets.js',
-        path: path.resolve(__dirname, '..', '..', 'out', 'ipywidgets'),
+        path: path.resolve(__dirname, 'dist', 'ipywidgets'),
         publicPath: 'built/',
 		library: "vscIPyWidgets",
 		libraryTarget: "window"