ValueProvider
Configures the Injector to return a value for a token.
interface ValueProvider extends ValueSansProvider {
provide: any
multi?: boolean
// inherited from core/ValueSansProvider
useValue: any
}
See also
Properties
| Property | Description |
|---|---|
provide: any
|
An injection token. Typically an instance of |
multi?: boolean
|
When true, 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({providers: [{provide: String, useValue: 'Hello'}]});
expect(injector.get(String)).toEqual('Hello');
Multi-value example
const locale = new InjectionToken<string[]>('locale');
const injector = Injector.create({
providers: [
{provide: locale, multi: true, useValue: 'en'},
{provide: locale, multi: true, useValue: 'sk'},
],
});
const locales: string[] = injector.get(locale);
expect(locales).toEqual(['en', 'sk']);