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Implement the type version of Object.entries For example interface Model { name: string; age: number; locations: string[] | null; } type modelEntries 阅读全文
posted @ 2022-10-16 17:08
Zhentiw
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Implement the generic Mutable<T> which makes all properties in T mutable (not readonly). For example interface Todo { readonly title: string readonly 阅读全文
posted @ 2022-10-15 20:36
Zhentiw
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Want to turn a module into a type? You can use typeof import('./') to grab the type of any module, even third-party ones. Here, we create a type from 阅读全文
posted @ 2022-10-15 20:27
Zhentiw
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For example we have a search input: const input$ = fromEvent(document.getElementById("#input"), "input"); input$ .pipe( debounceTime(200), pluck("targ 阅读全文
posted @ 2022-10-14 20:56
Zhentiw
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const { TestScheduler } = require("rxjs/testing"); const { map, take, delay, mapTo, catchError } = require("rxjs/operators"); const { concat, from, of 阅读全文
posted @ 2022-10-14 20:24
Zhentiw
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describe("Marble testing in Rxjs", () => { let testScheduler; beforeEach(() => { testScheduler = new TestScheduler((actual, expected) => { expect(actu 阅读全文
posted @ 2022-10-14 20:20
Zhentiw
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const { TestScheduler } = require("rxjs/testing"); const { map, take, delay, mapTo, catchError } = require("rxjs/operators"); const { concat, from, of 阅读全文
posted @ 2022-10-14 19:35
Zhentiw
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Implement a generic RequiredByKeys<T, K> which takes two type argument T and K. K specify the set of properties of T that should set to be required. W 阅读全文
posted @ 2022-10-14 19:14
Zhentiw
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Implement a generic PartialByKeys<T, K> which takes two type argument T and K. K specify the set of properties of T that should set to be optional. Wh 阅读全文
posted @ 2022-10-14 19:04
Zhentiw
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https://developer.mozilla.org/en-US/docs/Web/API/Clipboard_API const app = document.getElementById('app'); app.innerHTML = ` <h1>JavaScript HTML5 APIs 阅读全文
posted @ 2022-10-14 16:03
Zhentiw
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