FactoryProvider
Interface defining a Factory type provider.
interface FactoryProvider<T = any> {
provide: InjectionToken
useFactory: (...args: any[]) => T | Promise<T>
inject?: Array<InjectionToken | OptionalFactoryDependency>
scope?: Scope
durable?: boolean
}See also
Description
For example:
const connectionFactory = {
provide: 'CONNECTION',
useFactory: (optionsProvider: OptionsProvider) => {
const options = optionsProvider.get();
return new DatabaseConnection(options);
},
inject: [OptionsProvider],
};Properties
| Property | Description |
|---|---|
provide: InjectionToken
|
Injection token |
useFactory: (...args: any[]) => T | Promise<T>
|
Factory function that returns an instance of the provider to be injected. |
inject?: Array<InjectionToken | OptionalFactoryDependency>
|
Optional list of providers to be injected into the context of the Factory function. |
scope?: Scope
|
Optional enum defining lifetime of the provider that is returned by the Factory function. |
durable?: boolean
|
Flags provider as durable. This flag can be used in combination with custom context id factory strategy to construct lazy DI subtrees. This flag can be used only in conjunction with scope = Scope.REQUEST. |