Stable Class
Class Overview
class OpaqueToken { constructor(_desc: string) toString() : string }
Class Description
Creates a token that can be used in a DI Provider.
Example (live demo)
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.
Annotations
@Injectable()
Constructor
constructor(_desc: string)
Class Details
toString() : string
exported from @angular/core/index, defined in @angular/core/src/di/opaque_token.ts
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