Zhentiw - 博客园

2022年11月11日

摘要： import { z } from "zod"; export enum SUBTYPE { ABORT = "abort", START = "start", UPLOAD = "upload", LOADING = "loading", } export const TYPE = "print" 阅读全文

posted @ 2022-11-11 20:42 Zhentiw 阅读(44) 评论(0) 推荐(0)

[Typescript] 97. Hard - Capitalize Words

摘要： Implement CapitalizeWords<T> which converts the first letter of each word of a string to uppercase and leaves the rest as-is. For example type capital 阅读全文

posted @ 2022-11-11 15:51 Zhentiw 阅读(34) 评论(0) 推荐(0)

[Typescript] 96. Hard - Optional Keys

摘要： Implement the advanced util type OptionalKeys<T>, which picks all the optional keys into a union. /* _____________ Your Code Here _____________ */ typ 阅读全文

posted @ 2022-11-11 00:11 Zhentiw 阅读(35) 评论(0) 推荐(0)

[Typescript] 95. Hard - Required Keys

摘要： Implement the advanced util type RequiredKeys<T>, which picks all the required keys into a union. For example type Result = RequiredKeys<{ foo: number 阅读全文

posted @ 2022-11-11 00:07 Zhentiw 阅读(45) 评论(0) 推荐(0)

2022年11月10日

[Typescript] 94. Hard - Get Optional

摘要： Implement the advanced util type GetOptional<T>, which remains all the optional fields For example type I = GetOptional<{ foo: number, bar?: string }> 阅读全文

posted @ 2022-11-10 22:03 Zhentiw 阅读(33) 评论(0) 推荐(0)

[Typescript] 93. Hard - Get Required

摘要： Implement the advanced util type GetRequired<T>, which remains all the required fields For example type I = GetRequired<{ foo: number, bar?: string }> 阅读全文

posted @ 2022-11-10 21:57 Zhentiw 阅读(40) 评论(0) 推荐(0)

2022年11月9日

[Typescript] 92. Medium - PathParams

摘要： type PathParams<S extends string> = S extends `/${string}/:${infer Param}/${infer REST}` ? Param | PathParams<`/${REST}`> : S extends `${string}/:${in 阅读全文

posted @ 2022-11-09 22:28 Zhentiw 阅读(27) 评论(0) 推荐(0)

[Typescript] 91. Hard - Union to Intersection

摘要： Implement the advanced util type UnionToIntersection<U> For example type I = Union2Intersection<'foo' | 42 | true> // expected to be 'foo' & 42 & true 阅读全文

posted @ 2022-11-09 17:22 Zhentiw 阅读(55) 评论(0) 推荐(0)

[Typescript] Contra-variant type positions

摘要： Co-Variance: declare let b: string declare let c: string | number c = b // ✅ // string is a sub-type of string | number // all elements of string appe 阅读全文

posted @ 2022-11-09 17:18 Zhentiw 阅读(54) 评论(0) 推荐(0)

[Typescript] The naked type

摘要： So what is a nake type? Example: type UnionToIntersection<T> = (T extends any ? (x: T) => any : never) //... We check Tin a sub-type condition, T exte 阅读全文

posted @ 2022-11-09 02:47 Zhentiw 阅读(35) 评论(0) 推荐(0)

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