AngularJS: Bind injected arguments to instance

after.js

// @ngInject
class AwesomeController {
  constructor(a, b, c, d, e, f, g, h) {
    bindArguments(this, arguments);
  }
  
  foo() {
    this.a.doSomething();
    this.b.doAnotherThing();
    // ...
  }
}
// AwesomeController.$inject = ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h'];

before.js

// @ngInject
class AwesomeController {
  constructor(a, b, c, d, e, f, g, h) {
    this.a = a;
    this.b = b;
    this.c = c;
    this.d = d;
    this.e = e;
    this.f = f;
    this.g = g;
    this.h = h;
  }

  foo() {
    this.a.doSomething();
    this.b.doAnotherThing();
    // ...
  }
}
// AwesomeController.$inject = ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h'];

bind-arguments.js

function bindArguments(instance, args) {
  var ctor = instance.constructor;
  if (!angular.isArray(ctor.$inject)) {
    return;
  }
  ctor.$inject.forEach(function(argName, i) {
    instance[argName] = args[i];
  });
}