d169c2434e
- Introduce `InjectionToken<T>` which is a parameterized and type-safe
version of `OpaqueToken`.
DEPRECATION:
- `OpaqueToken` is now deprecated, use `InjectionToken<T>` instead.
- `Injector.get(token: any, notFoundValue?: any): any` is now deprecated
use the same method which is now overloaded as
`Injector.get<T>(token: Type<T>|InjectionToken<T>, notFoundValue?: T): T;`.
Migration
- Replace `OpaqueToken` with `InjectionToken<?>` and parameterize it.
- Migrate your code to only use `Type<?>` or `InjectionToken<?>` as
injection tokens. Using other tokens will not be supported in the
future.
BREAKING CHANGE:
- Because `injector.get()` is now parameterize it is possible that code
which used to work no longer type checks. Example would be if one
injects `Foo` but configures it as `{provide: Foo, useClass: MockFoo}`.
The injection instance will be that of `MockFoo` but the type will be
`Foo` instead of `any` as in the past. This means that it was possible
to call a method on `MockFoo` in the past which now will fail type
check. See this example:
```
class Foo {}
class MockFoo extends Foo {
setupMock();
}
var PROVIDERS = [
{provide: Foo, useClass: MockFoo}
];
...
function myTest(injector: Injector) {
var foo = injector.get(Foo);
// This line used to work since `foo` used to be `any` before this
// change, it will now be `Foo`, and `Foo` does not have `setUpMock()`.
// The fix is to downcast: `injector.get(Foo) as MockFoo`.
foo.setUpMock();
}
```
PR Close #13785
54 lines
2.2 KiB
TypeScript
54 lines
2.2 KiB
TypeScript
/**
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* @license
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* Copyright Google Inc. All Rights Reserved.
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*
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* Use of this source code is governed by an MIT-style license that can be
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* found in the LICENSE file at https://angular.io/license
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*/
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import {InjectionToken} from '@angular/core';
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import * as fs from 'fs';
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export class Options {
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static SAMPLE_ID = new InjectionToken('Options.sampleId');
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static DEFAULT_DESCRIPTION = new InjectionToken('Options.defaultDescription');
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static SAMPLE_DESCRIPTION = new InjectionToken('Options.sampleDescription');
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static FORCE_GC = new InjectionToken('Options.forceGc');
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static NO_PREPARE = () => true;
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static PREPARE = new InjectionToken('Options.prepare');
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static EXECUTE = new InjectionToken('Options.execute');
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static CAPABILITIES = new InjectionToken('Options.capabilities');
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static USER_AGENT = new InjectionToken('Options.userAgent');
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static MICRO_METRICS = new InjectionToken('Options.microMetrics');
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static USER_METRICS = new InjectionToken('Options.userMetrics');
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static NOW = new InjectionToken('Options.now');
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static WRITE_FILE = new InjectionToken('Options.writeFile');
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static RECEIVED_DATA = new InjectionToken('Options.receivedData');
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static REQUEST_COUNT = new InjectionToken('Options.requestCount');
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static CAPTURE_FRAMES = new InjectionToken('Options.frameCapture');
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static DEFAULT_PROVIDERS = [
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{provide: Options.DEFAULT_DESCRIPTION, useValue: {}},
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{provide: Options.SAMPLE_DESCRIPTION, useValue: {}},
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{provide: Options.FORCE_GC, useValue: false},
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{provide: Options.PREPARE, useValue: Options.NO_PREPARE},
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{provide: Options.MICRO_METRICS, useValue: {}}, {provide: Options.USER_METRICS, useValue: {}},
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{provide: Options.NOW, useValue: () => new Date()},
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{provide: Options.RECEIVED_DATA, useValue: false},
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{provide: Options.REQUEST_COUNT, useValue: false},
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{provide: Options.CAPTURE_FRAMES, useValue: false},
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{provide: Options.WRITE_FILE, useValue: writeFile}
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];
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}
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function writeFile(filename: string, content: string): Promise<any> {
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return new Promise(function(resolve, reject) {
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fs.writeFile(filename, content, (error) => {
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if (error) {
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reject(error);
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} else {
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resolve();
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}
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});
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});
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}
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