angular2
Version:
Angular 2 - a web framework for modern web apps
45 lines • 3.77 kB
JavaScript
;"use strict";
var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
if (typeof Reflect === "object" && typeof Reflect.decorate === "function") r = Reflect.decorate(decorators, target, key, desc);
else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
return c > 3 && r && Object.defineProperty(target, key, r), r;
};
var __metadata = (this && this.__metadata) || function (k, v) {
if (typeof Reflect === "object" && typeof Reflect.metadata === "function") return Reflect.metadata(k, v);
};
var lang_1 = require('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: "bindingValue"})
* ]);
*
* 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.
*/
var OpaqueToken = (function () {
function OpaqueToken(_desc) {
this._desc = _desc;
}
OpaqueToken.prototype.toString = function () { return "Token " + this._desc; };
OpaqueToken = __decorate([
lang_1.CONST(),
__metadata('design:paramtypes', [String])
], OpaqueToken);
return OpaqueToken;
}());
exports.OpaqueToken = OpaqueToken;
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