ValueProvider
interface
stable
Configures the Injector
to return a value for a token.
provide
any
An injection token. Typically an instance of Type
or InjectionToken
, but can be any
.
multi
boolean | undefined
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.
useValue
any
The value to inject.
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']);
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