ValueProvider
Configures the Injector to return a value for a token.
interface ValueProvider extends ValueSansProvider {
provide: any
multi?: boolean
}
Description
For more details, see the "Dependency Injection Guide".
Properties
| Property | Description |
|---|---|
provide: any
|
An injection token. (Typically an instance of |
multi?: boolean
|
If true, then injector returns an array of instances. This is useful to allow multiple providers spread across many files to provide configuration information to a common token. |
Usage notes
Example
const injector = Injector.create([{provide: String, useValue: 'Hello'}]);
expect(injector.get(String)).toEqual('Hello');
Multi-value example
const locale = new InjectionToken<string[]>('locale');
const injector = Injector.create([
{provide: locale, multi: true, useValue: 'en'},
{provide: locale, multi: true, useValue: 'sk'},
]);
const locales: string[] = injector.get(locale);
expect(locales).toEqual(['en', 'sk']);