Begin implementing rollup

Author: niklasvh

package.json

@@ -25,6 +25,7 @@
     "babel-eslint": "7.2.3",
     "babel-loader": "7.1.1",
     "babel-plugin-dev-expression": "0.2.1",
+    "babel-plugin-external-helpers": "^6.22.0",
     "babel-plugin-transform-es2015-modules-commonjs": "6.26.0",
     "babel-plugin-transform-object-rest-spread": "6.23.0",
     "babel-preset-es2015": "6.24.1",
@@ -56,6 +57,11 @@
     "promise-polyfill": "6.0.2",
     "replace-in-file": "^3.0.0",
     "rimraf": "2.6.1",
+    "rollup": "0.57.1",
+    "rollup-plugin-babel": "^3.0.3",
+    "rollup-plugin-commonjs": "^9.1.0",
+    "rollup-plugin-node-resolve": "^3.3.0",
+    "rollup-plugin-uglify": "^3.0.0",
     "serve-index": "1.9.0",
     "slash": "1.0.0",
     "uglifyjs-webpack-plugin": "^1.1.2",
@@ -65,6 +71,7 @@
     "build": "rimraf dist/ && node scripts/create-reftest-list && npm run build:npm && npm run build:browser",
     "build:npm": "babel src/ -d dist/npm/ --plugins=dev-expression,transform-es2015-modules-commonjs && replace-in-file __VERSION__ '\"$npm_package_version\"' dist/npm/index.js",
     "build:browser": "webpack",
+    "rollup": "rollup -c",
     "format": "prettier --single-quote --no-bracket-spacing --tab-width 4 --print-width 100 --write \"{src,www/src,tests,scripts}/**/*.js\"",
     "flow": "flow",
     "lint": "eslint src/**",

rollup.config.js

@@ -0,0 +1,38 @@
+/* @flow */
+'use strict';
+
+const fs = require('fs');
+const path = require('path');
+const pkg = JSON.parse(fs.readFileSync(path.resolve(__dirname, 'package.json')));
+
+const banner =
+    `/*
+${pkg.title} ${pkg.version} <${pkg.homepage}>
+Copyright (c) ${(new Date()).getFullYear()} ${pkg.author.name} <${pkg.author.url}>
+Released under ${pkg.license} License
+*/`;
+
+import babel from 'rollup-plugin-babel';
+import commonjs from 'rollup-plugin-commonjs';
+import resolve from 'rollup-plugin-node-resolve';
+
+export default {
+    input: './src/index.js',
+    plugins: [
+        resolve(),
+        babel({
+            exclude: 'node_modules/**'
+        }),
+        commonjs({
+            namedExports: {
+                'node_modules/css-line-break/dist/index.js': ['toCodePoints', 'fromCodePoint', 'LineBreaker']
+            }
+        })
+    ],
+    output: {
+        file: './dist/html2canvas.js',
+        name: 'html2canvas',
+        format: 'umd',
+        banner
+    }
+};