Injector
Direct Subclass:
A dependency injector for resolving dependencies. Injectors are hierarchicle.
Example:
const injector = new Injector([
{ provide: 'test', useValue: 'blorg' },
{ provide: 'factory', useFactory: () => 'BOOM' },
{ provide: 'myClass', useClass: MyClass },
MyClass
]);
injector.get('test'); // => 'blorg';
injector.get('factory'); // => 'BOOM';
injector.get('myClass'); // => instanceof MyClass;
injector.get(MyClass); // => instanceof MyClass;Static Method Summary
| Static Public Methods | ||
| public static |
fromInjectable(injectable: Type<any>, providers: ProviderArg[], parent: Injector): Injector Creates a new injector from an annotated injectable Class. |
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| public static |
resolveInjectables(injectable: *): *[] |
|
Constructor Summary
| Public Constructor | ||
| public |
constructor(providers: ProviderArg[], _parent: Injector | null) Creates an instance of Injector. |
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Method Summary
| Public Methods | ||
| public |
get(token: *, defaultValue: *, metadata: InjectionMetadata): * Gets a dependecy from the provided token. |
|
| public |
getDependencies(metadata: *): * |
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| public |
instantiate(Ref: *, d: ...*): * |
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| public |
invoke(fn: *, providers: *): * |
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| public |
registerProvider(provider: ProviderArg) Registers a provider with the injector. |
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| public |
resolveAndCreateChild(providers: ProviderArg[]): Injector Creates a new injector with the given providers and sets this injector as it's parent. |
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| public |
resolveAndInstantiate(provider: *): T Resolves the given provider with this injector. |
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| public |
Programmatically set the parent injector. |
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Static Public Methods
public static fromInjectable(injectable: Type<any>, providers: ProviderArg[], parent: Injector): Injector source
Creates a new injector from an annotated injectable Class. See Injectable for more details.
Params:
| Name | Type | Attribute | Description |
| injectable | Type<any> | ||
| providers | ProviderArg[] |
|
|
| parent | Injector |
|
public static resolveInjectables(injectable: *): *[] source
Params:
| Name | Type | Attribute | Description |
| injectable | * |
Return:
| *[] |
Public Constructors
public constructor(providers: ProviderArg[], _parent: Injector | null) source
Creates an instance of Injector.
Params:
| Name | Type | Attribute | Description |
| providers | ProviderArg[] |
|
List of providers for this injector. |
| _parent | Injector | null |
|
A parent injector. |
Public Methods
public get(token: *, defaultValue: *, metadata: InjectionMetadata): * source
Gets a dependecy from the provided token.
Params:
| Name | Type | Attribute | Description |
| token | * | ||
| defaultValue | * |
|
|
| metadata | InjectionMetadata |
|
Return:
| * |
public getDependencies(metadata: *): * source
Params:
| Name | Type | Attribute | Description |
| metadata | * |
Return:
| * |
public instantiate(Ref: *, d: ...*): * source
Params:
| Name | Type | Attribute | Description |
| Ref | * | ||
| d | ...* |
Return:
| * |
public invoke(fn: *, providers: *): * source
Params:
| Name | Type | Attribute | Description |
| fn | * | ||
| providers | * |
Return:
| * |
public registerProvider(provider: ProviderArg) source
Registers a provider with the injector.
Params:
| Name | Type | Attribute | Description |
| provider | ProviderArg |
public resolveAndCreateChild(providers: ProviderArg[]): Injector source
Creates a new injector with the given providers and sets this injector as it's parent.
Params:
| Name | Type | Attribute | Description |
| providers | ProviderArg[] |
|
public resolveAndInstantiate(provider: *): T source
Resolves the given provider with this injector.
Params:
| Name | Type | Attribute | Description |
| provider | * |
Return:
| T |