Add license info to builds (Fix #1126)

flow-typed/myLibDef.js

@@ -1 +1,2 @@
 declare var __DEV__: boolean;
+declare var __VERSION__: string;

src/index.js

@@ -24,6 +24,10 @@ export type Options = {
 };
 
 const html2canvas = (element: HTMLElement, config: Options): Promise<HTMLCanvasElement> => {
+    if (typeof console === 'object' && typeof console.log === 'function') {
+        console.log(`html2canvas ${__VERSION__}`);
+    }
+
     const logger = new Logger();
 
     const ownerDocument = element.ownerDocument;

webpack.config.js

@@ -1,4 +1,13 @@
 const webpack = require('webpack');
+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`;
 
 module.exports = {
     entry: './src/index.js',
@@ -16,7 +25,9 @@ module.exports = {
     },
     plugins: [
         new webpack.DefinePlugin({
-            '__DEV__': true
+            '__DEV__': true,
-        })
+            '__VERSION__': JSON.stringify(pkg.version)
+        }),
+        new webpack.BannerPlugin(banner)
     ]
 };