Adding base64 encoding from web-editor and removed old encoding (#339)

* Adding base64 encoding from web-editor and removed old encoding

* Adding base64 to main exports

src/base64.ts

@@ -0,0 +1,27 @@
+import global from './global';
+import has, { add as hasAdd } from '@dojo/has/has';
+
+hasAdd('btoa', 'btoa' in global);
+hasAdd('atob', 'atob' in global);
+
+/**
+ * Take a string encoded in base64 and decode it
+ * @param encodedString The base64 encoded string
+ */
+export const decode: (encodedString: string) => string = has('atob') ? function (encodedString: string) {
+	/* this allows for utf8 characters to be decoded properly */
+	return decodeURIComponent(Array.prototype.map.call(atob(encodedString), (char: string) => '%' + ('00' + char.charCodeAt(0).toString(16)).slice(-2)).join(''));
+} : function (encodedString: string): string {
+	return new Buffer(encodedString.toString(), 'base64').toString('utf8');
+};
+
+/**
+ * Take a string and encode it to base64
+ * @param rawString The string to encode
+ */
+export const encode: (rawString: string) => string = has('btoa') ? function (decodedString: string) {
+	/* this allows for utf8 characters to be encoded properly */
+	return btoa(encodeURIComponent(decodedString).replace(/%([0-9A-F]{2})/g, (match, code: string) => String.fromCharCode(Number('0x' + code))));
+} : function (rawString: string): string {
+	return new Buffer(rawString.toString(), 'utf8').toString('base64');
+};

src/main.ts

@@ -1,10 +1,10 @@
 import * as aspect from './aspect';
 import DateObject from './DateObject';
-import * as encoding from './encoding';
 import Evented from './Evented';
 import global from './global';
 import IdentityRegistry from './IdentityRegistry';
 import * as lang from './lang';
+import * as base64 from './base64';
 import load from './load';
 import MatchRegistry from './MatchRegistry';
 import on, { emit } from './on';
@@ -29,9 +29,9 @@ const async = {
 export {
 	aspect,
 	async,
+	base64,
 	DateObject,
 	emit,
-	encoding,
 	Evented,
 	global,
 	IdentityRegistry,

tests/unit/all.ts

@@ -3,9 +3,9 @@ import './async/iteration';
 import './async/ExtensiblePromise';
 import './async/Task';
 import './async/timing';
+import './base64';
 import './Destroyable';
 import './Evented';
-import './encoding';
 import './global';
 import './IdentityRegistry';
 import './instrument';