2023年2月2日
[Typescript] Function overload: For default value arguement
摘要： import { Equal, Expect } from "../helpers/type-utils"; const obj = { a: 1, b: 2, c: 3, } as const; type ObjKey = keyof typeof obj; // If don't pass in 阅读全文
posted @ 2023-02-02 16:04 Zhentiw 阅读(38) 评论(0) 推荐(0)
[Typescript] Function overload: Data hook problem
摘要： Requirement is if pass in initialData, then return type should not contain undefined, otherwise, it should. import { it } from "vitest"; import { Equa 阅读全文
posted @ 2023-02-02 15:51 Zhentiw 阅读(27) 评论(0) 推荐(0)
[Typescript] The Inference Mystery Solved
摘要： When we pass in "div" to document.querySelector, it returns an HTMLDivElement or null. Similarly, when we pass it "span" we're getting an HTMLSpanElem 阅读全文
posted @ 2023-02-02 15:42 Zhentiw 阅读(45) 评论(0) 推荐(0)
[Typescript] Generics in Function Overloads
摘要： Here's a function called returnWhatIPassInExceptFor1: function returnWhatIPassInExceptFor1(t: unknown): unknown { if (t 1) { return 2; } return t; } W 阅读全文
posted @ 2023-02-02 01:15 Zhentiw 阅读(46) 评论(0) 推荐(0)