fix(@angular/cli): Do not use floating promises, we can resolve these…#17652
fix(@angular/cli): Do not use floating promises, we can resolve these…#17652timfrijtersppw wants to merge 2 commits intoangular:masterfrom
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packages/schematics/angular/application/other-files/app.component.spec.ts.template
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Please note that I've never really done an open source pull request before. If there is anything missing please let me know. |
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| beforeEach(async(() => { | ||
| TestBed.configureTestingModule({<% if (routing) { %> | ||
| beforeEach(async () => { | ||
| return TestBed.configureTestingModule({<% if (routing) { %> |
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Is there any point in using async if you are not awaiting the promise?
I would expect either async () => { await TestBed... } or () => { return TestBed... }.
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i'd probably go with await to make it more explicit that it is an asynchronous operation and also slightly simplify future user additions (either before or after the call).
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I think async shouldn't only be used when awaiting, returning the promise also showcases asynchronous behavior.
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| export class AppPage { | ||
| navigateTo(): Promise<unknown> { | ||
| async navigateTo(): Promise<unknown> { |
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FWIW, you can also use PromiseLike<...> here and not have to cast below.
Do you know if there are any downsides to using PromiseLike?
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PromiseLike is mainly useful when dealing with alternative implementations of promises (bluebird, etc.). The only real downside is that it won't be accepted for any consumer that expects a Promise (e.g., function myFunc(p: Promise<unknown>) {}).
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Also, no reason for async here since you are not using await.
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In this PR I've fixed some floating promises in the generation of component spec files and app.component.spec.ts.
Without this fix tslint errors occur when generating components when the tslint option 'no-floating-promises' is enabled.
Also see:
https://palantir.github.io/tslint/rules/no-floating-promises/