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Open source hooliganism and the TypeScript meltdown
September 7, 2023 Open source hooliganism and the TypeScript meltdown I've seen a lot of true believers argue for virtues of their favorite paradigms and methods over the decades working in software. And mostly, I look at people with a passionate preference and smile. Isn't it great that people care so much about their craft that they volunteer to extol the benefits of their favorite tools! Yes it
My new error...
JavaScript の undefined と null を完全に理解する
2022年秋版 最新React/Typescript開発環境の作成 - Qiita
JavaScript/TypeScriptで独自のエラークラスを利用する - くらげになりたい。
JavaScriptでカスタム例外クラスを作りたいなと思ったら、 めんどうだったので、その時調べたときの備忘録。 以下がすごく参考になった(´ω｀) ・例外処理 — 仕事ですぐに使えるTypeScript ドキュメント カスタム例外 こんな感じ。 export class CustomError extends Error { constructor(e?: string) { super(e); this.name = new.target.name; // Maintains proper stack trace for where our error was thrown (only available on V8) if (Error.captureStackTrace) { Error.captureStackTrace(this, this.constructor); } //
【入門】フロントエンドのテスト手法まとめ - Qiita
はじめに 自分は2021年に新卒でweb系の開発会社にフロントエンジニアとして入社し2022年で2年目になります。 実務ではReact×TypeScriptを利用したフロント周りの開発をメインで行なっていなす。 今回は実務でNext.jsプロジェクトにテストを導入することになり「React-Testing-Library」と「Jest」について改めて学び直したのでその内容を紹介します。 はじめに「React-Testing-Library」と「Jest」の概要を説明しその上で具体的なテストコードを何パターンか書いていきます。 この記事の対象者 フロントエンドのテストの概要を知りたい人 React-Testing-LibraryとJestについて知りたい人 具体的なテストの書き方を学びたい人 なお本記事では、React-Testing-Libraryの具体的な書き方についてをメインにしている
JavaScriptのES2023・ES2022の新機能まとめ - ICS MEDIA
State of JS 2020
As crappy as 2020 was, JavaScript as a whole still managed to somehow move forward. As the language itself keeps improving thanks to new features like Optional Chaining and Nullish Coalescing, TypeScript's widespread adoption is taking things to a whole other level by popularizing static typing. And on the framework side, just when we thought things were settling down, Svelte comes in and shakes e
The State of JS 2021
Types vs. interfaces in TypeScript - LogRocket Blog
Leonardo Maldonado Follow Fullstack developer. JavaScript, React, TypeScript, GraphQL. The idea of having static type-checking in JavaScript is really fantastic and the adoption of TypeScript is growing more every day. You started to use TypeScript in your project, you created your first type, then you jumped to your first interface, and you got it working. You concluded that TypeScript, in fact,
interfaceとtypeの違い、そして何を使うべきかについて
より良いReactJS開発者になるための10のヒントとコツ - Qiita
2021年にJavaScriptやNode.jsを勉強し始めたので、読んで良かった資料をまとめる
Google TypeScript Style Guide
// Good: choose between two options as appropriate (see below). import * as ng from '@angular/core'; import {Foo} from './foo'; // Only when needed: default imports. import Button from 'Button'; // Sometimes needed to import libraries for their side effects: import 'jasmine'; import '@polymer/paper-button'; Import paths TypeScript code must use paths to import other TypeScript code. Paths may be r
Effective TypeScript › The Golden Rule of Generics
The New TypeScript Handbook has some real gems in it. Here's what it has to say about generics: Writing generic functions is fun, and it can be easy to get carried away with type parameters. Having too many type parameters or using constraints where they aren't needed can make inference less successful, frustrating callers of your function. It goes on to offer a few specific pieces of advice about
TypeScript + React: Component patterns
Published on July 28, 2020 Stefan on Mastodon Reading time: 10 minutes More on TypeScript, React, Preact This list is a collection of component patterns for React when working with TypeScript. See them as an extension to the TypeScript + React Guide that deals with overall concepts and types. This list has been heavily inspired by chantastic’s original React patterns list. Contrary to chantastic’s
Denoの登場でNode.jsの時代は終わるのか？ - Qiita
俺の webpack.config.js-20200503 - mizchi's blog
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