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import { it } from 'vitest'; interface Events { click: { x: number; y: number; }; focus: undefined; } type LookUpEvents<K extends keyof Events> = Even 阅读全文
posted @ 2023-02-18 16:15
Zhentiw
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import { expect, it } from "vitest"; import { fetchUser } from "fake-external-lib"; type Middleware<TInput, TOutput> = (input: TInput) => TOutput; cla 阅读全文
posted @ 2023-02-15 16:48
Zhentiw
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From previous post, Builder pattern - 03 If we do the following changes: - class TypeSafeStringMap<TMap extends Record<string, string> = {}> { + class 阅读全文
posted @ 2023-02-14 15:07
Zhentiw
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import { expect, it } from 'vitest'; class TypeSafeStringMap<TMap extends Record<string, string> = {}> { private map: TMap; constructor() { this.map = 阅读全文
posted @ 2023-02-14 14:24
Zhentiw
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export class BuilderTuple<TList extends any[] = []> { list: TList; constructor() { this.list = [] as any; } push<TNum extends number>(num: TNum): Buil 阅读全文
posted @ 2023-02-13 18:12
Zhentiw
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The builder pattern is a design pattern commonly used in OOP. It is used to create complex objects step by step throught a series of methods, each of 阅读全文
posted @ 2023-02-13 16:41
Zhentiw
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file1: import { expect, it } from "vitest"; /** * Here, we've actually got _multiple_ problem files! * Make sure to to check problem.2.ts too. */ decl 阅读全文
posted @ 2023-02-10 21:09
Zhentiw
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We have the following code: class Form<TValues> { error?: string; constructor( public values: TValues, private validate: (values: TValues) => string | 阅读全文
posted @ 2023-02-10 21:03
Zhentiw
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import { it } from 'vitest'; import { Brand } from '../helpers/Brand'; type Valid<T> = Brand<T, 'Valid'>; interface PasswordValues { password: string; 阅读全文
posted @ 2023-02-10 20:44
Zhentiw
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import { it } from 'vitest'; import { Equal, Expect } from '../helpers/type-utils'; export const isDivElement = (element: unknown): element is HTMLDiv 阅读全文
posted @ 2023-02-10 20:38
Zhentiw
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