angular2
Version:
Angular 2 - a web framework for modern web apps
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JavaScript
var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
if (typeof Reflect === "object" && typeof Reflect.decorate === "function") return Reflect.decorate(decorators, target, key, desc);
switch (arguments.length) {
case 2: return decorators.reduceRight(function(o, d) { return (d && d(o)) || o; }, target);
case 3: return decorators.reduceRight(function(o, d) { return (d && d(target, key)), void 0; }, void 0);
case 4: return decorators.reduceRight(function(o, d) { return (d && d(target, key, o)) || o; }, desc);
}
};
var __metadata = (this && this.__metadata) || function (k, v) {
if (typeof Reflect === "object" && typeof Reflect.metadata === "function") return Reflect.metadata(k, v);
};
import { CONST } from 'angular2/src/facade/lang';
/**
* Creates a token that can be used in a DI Provider.
*
* ### Example ([live demo](http://plnkr.co/edit/Ys9ezXpj2Mnoy3Uc8KBp?p=preview))
*
* ```typescript
* var t = new OpaqueToken("value");
*
* var injector = Injector.resolveAndCreate([
* provide(t, {useValue: "providedValue"})
* ]);
*
* expect(injector.get(t)).toEqual("bindingValue");
* ```
*
* Using an `OpaqueToken` is preferable to using strings as tokens because of possible collisions
* caused by multiple providers using the same string as two different tokens.
*
* Using an `OpaqueToken` is preferable to using an `Object` as tokens because it provides better
* error messages.
*/
export let OpaqueToken = class {
constructor(_desc) {
this._desc = _desc;
}
toString() { return `Token ${this._desc}`; }
};
OpaqueToken = __decorate([
CONST(),
__metadata('design:paramtypes', [String])
], OpaqueToken);
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