Announcing the New TypeScript Homepage - TypeScript
Hey folks, we’re happy to announce that the next iteration version of the TypeScript Website has been switched on for the TypeScript homepage. Last August we deployed a re-design and re-architecture of the entire TypeScript web presence. The goals were to provide new foundations for documenting TypeScript, re-organize our information architecture and to have a cohesive design wrapping it together.
TypeScript で string 型の値に自動補完を効かせる: Days on the Moon
結論 type X = 'foo' | 'bar' | (string & {}); のように、文字列リテラル型の共用体型に | (string & {}) を付け足した型 X を定義します。X 型は任意の文字列を受け付けますが、IDE (Visual Studio Code など) で X 型の値を入力するときには 'foo' と 'bar' が自動補完の候補として提示されます。 解説 単純に type X = 'foo' | 'bar' | string; と書いてしまうと、共用体型の各要素がまとめられて、X は単なる string 型になってしまいます。{} 型は null と undefined を除く任意の値を受け付けるので、string & {} 型は実質的に string 型と同一なのですが、TypeScript 4.4 の時点では同一扱いされず、共用体型の各要素がまとめられ
TypeScript: Unexpected intersections
Published on July 21, 2021 Stefan on Mastodon Reading time: 13 minutes More on TypeScript, JavaScript Sometimes when writing TypeScript, some of the things you’d usually do in JavaScript work a little different and cause some weird, and puzzling situations. Sometimes you just want to assign a value to an object property and get a weird error like “Type ‘string | number’ is not assignable to type ‘
Abracadabra, refactor this! - Visual Studio Marketplace
🧙 Abracadabra Refactoring (noun): a change made to the internal structure of software to make it easier to understand and cheaper to modify without changing its observable behavior. — "Refactoring: Improving the Design of Existing Code" by Martin Fowler With Abracadabra, you can quickly and safely refactor existing code in VS Code. VS Code ships with a few basic refactorings. Abracadabra superch
Simple monorepos via npm workspaces and TypeScript project references
Simple monorepos via npm workspaces and TypeScript project references A monorepo is a single repository that is used to manage multiple projects. In this blog post, we’ll explore how to set up a simple monorepo for two npm packages. All we need is already built into npm and TypeScript. What is a monorepo and why is it useful? # Whenever we have to develop multiple interdependent npm packages in p
TypeScript: Array.includes on narrow types
Published on July 6, 2021 Stefan on Mastodon Reading time: 10 minutes More on TypeScript, JavaScript The Array.prototype.includes function allows searching for a value within an array. If this value is present, the function returns true! How handy! Of course, TypeScript has proper typings for this JavaScript functionality. However, in certain cases, the typings can bite a little. The reason? It’s
GitHub - sinclairzx81/typebox: Json Schema Type Builder with Static Type Resolution for TypeScript
┌────────────────────────────────┬─────────────────────────────┬────────────────────────────────┐ │ TypeBox │ TypeScript │ Json Schema │ │ │ │ │ ├────────────────────────────────┼─────────────────────────────┼────────────────────────────────┤ │ const T = Type.Any() │ type T = any │ const T = { } │ │ │ │ │ ├────────────────────────────────┼─────────────────────────────┼─────────────────────────────
TypeScript and native ESM on Node.js
In this blog post, I’ll explain everything you need to know in order to use and produce native ECMAScript modules on Node.js. The GitHub repository iterable is an example of a TypeScript ESM package that works on Node.js. It still uses the "typesVersions" workaround (which isn’t needed in TypeScript 4.7 and later). (Thanks to Guy Beford and Oleg Drapeza for their feedback on this post.) TypeScript
TypeScript * GraphQLのバックエンド設計プラクティス
2冊目も公開中なのでみてください！ https://zenn.dev/tatta/books/4e993c596e7dc9 TypeScriptを使いはじめて1年になるので、バックエンドのWebアプリを設計するときに気を付けていることをまとめました。（※社内勉強会用資料の公開版です。） TypeScriptについては、Next.jsを中心にフロントエンドに関する公開情報が豊富です。一方でバックエンドに関する公開情報が少ないと感じています。（かくいう私もNext.jsからTypeScriptデビューしたわけですが） TypeScript * GraphQL という構成は仕事・趣味で採用されている方も多いのではないでしょうか？ 私もその1人です。私のような方のためにも、バックエンドの設計プラクティスについてまとめようと思い筆を取りました。 本書がこれから始める読者にとっては教科書のようになり、
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TypeScript: In defense of any
GitHub - nartc/mapper: 🔥 An Object-Object AutoMapper for TypeScript 🔥
Home | AutoMapper TypeScript
TypeScript, abstract classes, and constructors - LogRocket Blog
Control flow analysis of aliased conditional expressions and discriminants by ahejlsberg · Pull Request #44730 · microsoft/TypeScript
GitHub - uhyo/eslint-plugin-import-access
Building a Node.js CLI with TypeScript, packaged and distributed via Homebrew
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GitHub - rikukissa/typehole: TypeScript development tool for Visual Studio Code that helps you automate creating the initial static typing for runtime values
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