ES6箭头功能是否与Angular不兼容?

时间:2015-09-21 16:20:50

标签: javascript angularjs ecmascript-6 angularjs-injector arrow-functions

这是我的Angular代码中正常的ES5函数:

app.run(function($templateCache){ $templateCache.put('/some','thing') });

我想将其转换为ES6箭头功能

app.run($templateCache => $templateCache.put('/some','thing'));

但是它给出了错误

Uncaught Error: [$injector:unpr] Unknown provider: '/some'Provider <- '/some'
http://errors.angularjs.org/1.4.6/$injector/unpr?p0='%2Fsome'Provider%20%3C-%20'%2Fsome'
REGEX_STRING_REGEXP  @ angular.js:68
(anonymous function) @ angular.js:4287
getService           @ angular.js:4435
(anonymous function) @ angular.js:4292
getService           @ angular.js:4435
invoke               @ angular.js:4467
(anonymous function) @ angular.js:4297
forEach              @ angular.js:336
createInjector       @ angular.js:4297
doBootstrap          @ angular.js:1657
bootstrap            @ angular.js:1678
angularInit          @ angular.js:1572
(anonymous function) @ angular.js:28821
trigger              @ angular.js:3022
eventHandler         @ angular.js:3296

ES6箭头功能是否与Angular不兼容?

编辑:我想也许Angular无法推断名称$templateCache,因此无法注入它,但后来我将其记录到控制台并确实正确显示:

app.run($templateCache=>console.log($templateCache));
// => 
//  Object {}
//      destroy: function()
//      get: function(key)
//      info: function()
//      put: function(key, value)
//      remove: function(key)
//      removeAll: function()
//      __proto__: Object

2 个答案:

答案 0 :(得分:9)

正确。 Your version of AngularJS is not compatible with arrow functions that make use of $injector.

这主要是因为AngularJS 1.4.6使用(Function).toString,它不以function(开头的箭头函数,至少在Firefox中是这样的:

>var a = () => 5
function a()
>a.toString()
"() => 5"  // not "function a() {return 5;}"

AngularJS支持1.5.0 onwards的箭头符号。

答案 1 :(得分:3)

我尝试了另一个有效的变体:(x)=>…(而不是x=>…

app.run(($templateCache) => $templateCache.put('/some','thing'));

我想由于某种原因它需要括号