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Let's say we have a simple app look like this: import { useEffect, useState } from "react"; function useFetch(config) { console.log("useFetch call"); 阅读全文
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Implement the type version of Lodash.without, Without<T, U> takes an Array T, number or array U and returns an Array without the elements of U. type R 阅读全文
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Implement TrimRight<T> which takes an exact string type and returns a new string with the whitespace ending removed. For example: type Trimed = TrimRi 阅读全文
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Let say we have a simple counter app: import { useEffect, useState } from "react"; function useStopwatch() { const [count, setCount] = useState(0); us 阅读全文
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import { interval, fromEvent, of, merge, empty } from 'rxjs'; import { scan, mapTo, takeWhile, takeUntil, tap, startWith, switchMap } from 'rxjs/opera 阅读全文
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Fill, a common JavaScript function, now let us implement it with types. Fill<T, N, Start?, End?>, as you can see,Fill accepts four types of parameters 阅读全文