Are ES6 arrow functions incompatible with Angular?
Correct. Your version of AngularJS is not compatible with arrow functions that make use of $injector.
This is mainly because AngularJS 1.4.6 makes use of (Function).toString, which does not start with function( for arrow functions, at least in Firefox:
>var a = () => 5function a()>a.toString()"() => 5" // not "function a() {return 5;}"AngularJS supports the arrow notation from 1.5.0 onwards.
I tried another variation which worked: (x)=>… (instead of x=>…)
app.run(($templateCache) => $templateCache.put('/some','thing'));I guess it needs parentheses for some reason