use promise polyfill

index.js

@@ -1,5 +1,6 @@
 "use strict"
 
+var Promise = require("./promise/promise")
 var m = require("./render/hyperscript")
 var renderService = require("./render/render")(window)
 var redrawService = require("./api/pubsub")()

promise/promise.js

@@ -1,8 +1,9 @@
 "use strict"
-{
-function Promise(executor) {
+
+if (typeof Promise === "undefined") {
+	var Promise = function(executor) {
 		if (!(this instanceof Promise)) throw new Error("Promise must be called with `new`")
-	if (typeof executor !== "function") throw new Error("executor must be a function")
+		if (typeof executor !== "function") throw new TypeError("executor must be a function")
 		
 		var self = this, resolvers = [], rejectors = [], resolveCurrent = handler(resolvers, true), rejectCurrent = handler(rejectors, false)
 		var instance = self._instance = {resolvers: resolvers, rejectors: rejectors}
@@ -43,8 +44,8 @@ function Promise(executor) {
 		}
 		
 		executeOnce(executor)
-}
-Promise.prototype.then = function(onFulfilled, onRejection) {
+	}
+	Promise.prototype.then = function(onFulfilled, onRejection) {
 		var self = this, instance = self._instance
 		function handle(callback, list, next, state) {
 			list.push(function(value) {
@@ -57,18 +58,18 @@ Promise.prototype.then = function(onFulfilled, onRejection) {
 		var promise = new Promise(function(resolve, reject) {resolveNext = resolve, rejectNext = reject})
 		handle(onFulfilled, instance.resolvers, resolveNext, true), handle(onRejection, instance.rejectors, rejectNext, false)
 		return promise
-}
-Promise.prototype.catch = function(onRejection) {
+	}
+	Promise.prototype.catch = function(onRejection) {
 		return this.then(null, onRejection)
-}
-Promise.resolve = function(value) {
+	}
+	Promise.resolve = function(value) {
 		if (value instanceof Promise) return value
 		return new Promise(function(resolve, reject) {resolve(value)})
-}
-Promise.reject = function(value) {
+	}
+	Promise.reject = function(value) {
 		return new Promise(function(resolve, reject) {reject(value)})
-}
-Promise.all = function(list) {
+	}
+	Promise.all = function(list) {
 		return new Promise(function(resolve, reject) {
 			var total = list.length, count = 0, values = []
 			for (var i = 0; i < list.length; i++) {
@@ -85,14 +86,13 @@ Promise.all = function(list) {
 				}(i)
 			}
 		})
-}
-Promise.race = function(list) {
+	}
+	Promise.race = function(list) {
 		return new Promise(function(resolve, reject) {
 			for (var i = 0; i < list.length; i++) {
 				list[i].then(resolve, reject)
 			}
 		})
+	}
 }
-
 module.exports = Promise
-}