ES6 箭头函数是否与 Angular 不兼容? [英] Are ES6 arrow functions incompatible with Angular?

问题描述

这是我的 Angular 代码中一个正常的 ES5 函数:

Here's a normal ES5 function in my Angular code which works:

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

我想把它转换成 ES6 箭头函数

I wanted to convert it to ES6 arrow function

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

但它给出了错误

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 箭头函数是否与 Angular 不兼容?

Are ES6 arrow functions incompatible with Angular?

我认为 Angular 可能无法推断名称 $templateCache，因此无法注入它，但后来我将其记录到控制台，它确实显示正确:

I thought perhaps Angular isn't able to infer the name $templateCache and so unable to inject it but then I logged it to console and it does show it correctly:

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

推荐答案

正确.您的 AngularJS 版本与使用的箭头函数不兼容$injector.

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

This is mainly because AngularJS 1.4.6 makes use of (Function).toString, which does not start with function( for arrow functions, at least in Firefox:

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

AngularJS 支持 1.5.0 以上的箭头符号.

AngularJS supports the arrow notation from 1.5.0 onwards.

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