Fix support for requirejs/amd

Author: niklasvh

.jshintrc

@@ -15,5 +15,5 @@
     "globals": {
       "jQuery": true
     },
-    "predef": ["-Promise"]
+    "predef": ["-Promise", "define"]
 }

dist/html2canvas.js

@@ -1978,10 +1978,18 @@ html2canvas.NodeContainer = NodeContainer;
 html2canvas.log = log;
 html2canvas.utils = utils;
 
-module.exports = (typeof(document) === "undefined" || typeof(Object.create) !== "function" || typeof(document.createElement("canvas").getContext) !== "function") ? function() {
+var html2canvasExport = (typeof(document) === "undefined" || typeof(Object.create) !== "function" || typeof(document.createElement("canvas").getContext) !== "function") ? function() {
     return Promise.reject("No canvas support");
 } : html2canvas;
 
+module.exports = html2canvasExport;
+
+if (typeof(define) === 'function' && define.amd) {
+    define('html2canvas', [], function() {
+        return html2canvasExport;
+    });
+}
+
 function renderDocument(document, options, windowWidth, windowHeight, html2canvasIndex) {
     return createWindowClone(document, document, windowWidth, windowHeight, options, document.defaultView.pageXOffset, document.defaultView.pageYOffset).then(function(container) {
         log("Document cloned");

dist/html2canvas.min.js

@@ -39,6 +39,7 @@
     "humanize-duration": "^2.0.1",
     "lodash": "^2.4.1",
     "png-js": ">= 0.1.1",
+    "requirejs": "^2.1.20",
     "wd": "^0.2.21"
   },
   "scripts": {

package.json

@@ -57,10 +57,18 @@ html2canvas.NodeContainer = NodeContainer;
 html2canvas.log = log;
 html2canvas.utils = utils;
 
-module.exports = (typeof(document) === "undefined" || typeof(Object.create) !== "function" || typeof(document.createElement("canvas").getContext) !== "function") ? function() {
+var html2canvasExport = (typeof(document) === "undefined" || typeof(Object.create) !== "function" || typeof(document.createElement("canvas").getContext) !== "function") ? function() {
     return Promise.reject("No canvas support");
 } : html2canvas;
 
+module.exports = html2canvasExport;
+
+if (typeof(define) === 'function' && define.amd) {
+    define('html2canvas', [], function() {
+        return html2canvasExport;
+    });
+}
+
 function renderDocument(document, options, windowWidth, windowHeight, html2canvasIndex) {
     return createWindowClone(document, document, windowWidth, windowHeight, options, document.defaultView.pageXOffset, document.defaultView.pageYOffset).then(function(container) {
         log("Document cloned");

src/core.js

@@ -1,8 +1,24 @@
 var assert = require('assert');
+var path = require('path');
 var html2canvas = require('../../');
 
 describe("Package", function() {
     it("should have html2canvas defined", function() {
         assert.equal(typeof(html2canvas), "function");
     });
 });
+
+describe.only("requirejs", function() {
+    var requirejs = require('requirejs');
+
+    requirejs.config({
+        baseUrl: path.resolve(__dirname, '../../dist')
+    });
+
+    it("should have html2canvas defined", function(done) {
+        requirejs(['html2canvas'], function(h2c) {
+            assert.equal(typeof(h2c), "function");
+            done();
+        });
+    });
+});