Introducing Deopt Explorer - TypeScript
Over the past few months, during the lead-up to the TypeScript 5.0 beta, our team spent a good portion of our time looking for ways to improve the performance of our compiler so that your projects build faster. One of the ways we improved was by looking into an oft overlooked aspect of many JavaScript VMs: inline caching. A Brief Primer on Inline Caching Inline caching is an optimization often use
JSON Schema ã‚„ Ajv 㨠TypeScript ã®åž‹ã‚’ç´ã¥ã‘ã‚‹ã¨ãã®è€ƒãˆæ–¹ã‚„技術
å®£ä¼ 4/25 ã« Encraft #2 サーãƒãƒ¼ã¨ã‚¯ãƒ©ã‚¤ã‚¢ãƒ³ãƒˆã‚’çµã¶æŠ€è¡“ ã¨ã„ã†ã‚¤ãƒ™ãƒ³ãƒˆã§ JSON Schema ã«ã¤ã„ã¦å–‹ã‚‹ã€‚ã„ã¾ç¾åœ¨é€²è¡Œå½¢ã§ IDL ã¨ã—㦠JSON Schema, GraphQL, Protocol Buffer, zod, joi を使ã£ã¦ã„ã‚‹ã®ã§ãれらを食ã¹æ¯”ã¹ã‚‹ç™ºè¡¨ã‚’ã™ã‚‹ã¤ã‚‚ã‚Šã (明らã‹ã« JS 上ã§ã—ã‹å‹•ã‹ãªã„ã‚‚ã®ã‚’ IDL ã¨å‘¼ã‚“ã§ã„ã„ã‹ä¸å®‰ã«ãªã£ã¦ããŸ)。ãã—ã¦ã‚¹ã‚ーマ駆動開発(code first ãªã‚¢ãƒ—ãƒãƒ¼ãƒã‚’スã‚ーマ駆動ã¨å‘¼ã‚“ã§ã„ã„ã®ã‹ä¸å®‰ã«ãªã£ã¦ããŸ)を推進ã™ã‚‹ä¸Šã§ã€ãã®ä¸ã§ã¯å¤§äººã®äº‹æƒ…ã«æŸ”軟ã«ä¸€ç•ªå¯¾å¿œã§ãã‚‹ã®ã¯ JSON Schema ã ã¨ã„ã†æ‚²ã—ã„話をã™ã‚‹ã€‚ã ãŒã€ç§ã¯ã“ã® JSON Schema を書ãéŽãŽãŸã›ã„ã§è©±ã—ãŸã„ã“ã¨ãŒå¤§é‡ã«ã‚ã‚Šã€JSON Schema ã®è©±ã ã‘㧠1 時間超ãˆãã†ãªå‹¢ã„ãªã“ã¨ã«æ°—ã¥ã„ãŸï¼ˆç™ºè¡¨æ™‚間㯠20 分）。
ブラウザ上ã§TypeScriptã§ãƒ„ールを作æˆãƒ»å®Ÿè¡Œã§ãるサービス「Moyukã€ã‚’支ãˆã‚‹æŠ€è¡“
一年以上温ã‚ã«æ¸©ã‚ã¾ãã£ãŸå€‹äººé–‹ç™ºã‚µãƒ¼ãƒ“ス Moyuk ã‚’ Product Hunt ã§ãƒãƒ¼ãƒ³ãƒã—ãŸã®ã§ã€æŠ€è¡“çš„ãªçŸ¥è¦‹ã‚’書ãã¾ã™ðŸš€ About Me æ ªå¼ä¼šç¤¾ãƒ˜ãƒ³ãƒªãƒ¼ ã§ã‚½ãƒ•ãƒˆã‚¦ã‚§ã‚¢ã‚¨ãƒ³ã‚¸ãƒ‹ã‚¢ & アーã‚テクト的ãªã“ã¨ã‚’ã—ã¤ã¤ã€å€‹äººé–‹ç™ºã—ã¦ã¾ã™ã€‚ Social accounts: kohii on GitHub @kohii00 on Twitter 作ã£ãŸã‚‚㮠説明 詳ã—ã„説明： サービスã®è©³ã—ã„紹介ã¯ã“ã¡ã‚‰ã«æ›¸ã„ãŸã®ã§èªã‚“ã§ã¿ã¦ãã ã•ã„ 🙠雑ãªèª¬æ˜Žï¼š Moyuk 㯠TypeScript ã§æ›¸ã„ãŸé–¢æ•°ã‚’ã€ãƒ–ラウザ上ã§å®Ÿè¡Œã€ç®¡ç†ã€å…±æœ‰ã§ãã‚‹ Web アプリ（â€Appâ€ï¼‰ã«å¤‰æ›ã™ã‚‹ãƒ—ラットフォームã§ã™ã€‚ 技術的è¦ç´ ã®æ¦‚è¦ Moyuk ã«ã¯ä¸€èˆ¬çš„ãªã‚¢ãƒ—リケーション（データã®å‡ºã—入れやUIã®æç”»ãªã©ï¼‰ã¨ã—ã¦ã®è¦ç´ ã«åŠ ãˆã¦ã€ä»¥ä¸‹ã®ã‚ˆã†ãªç‰¹å¾´çš„ãªè¦ç´ ãŒã‚ã‚Šã¾ã™ã€‚ ユーザーãŒæ›¸ã„㟠TypeS
Pure ESM package
esm-package.md Pure ESM package The package that linked you here is now pure ESM. It cannot be require()'d from CommonJS. This means you have the following choices: Use ESM yourself. (preferred) Use import foo from 'foo' instead of const foo = require('foo') to import the package. You also need to put "type": "module" in your package.json and more. Follow the below guide. If the package is used in
TypeScript 型レベル関数型プãƒã‚°ãƒ©ãƒŸãƒ³ã‚° in 2023 - Object.create(null)
ã¡ã‚‡ã£ã¨å‰ã«è©±é¡Œã«ãªã£ãŸ hotscript ã®æŠ€æ³•ã®ç´¹ä»‹ã‚„ら, ラムダ計算を TypeScript ã®åž‹ã«ã‚³ãƒ³ãƒ‘イルã™ã‚‹è©±ã‚„らãªã‚“やら. 通常ã®åž‹ãƒ¬ãƒ™ãƒ«é–¢æ•° TypeScript ã®åž‹ã‚¨ã‚¤ãƒªã‚¢ã‚¹ã¯ãƒ‘ラメータをå–れるã®ã§, ã“ã‚Œã¯åž‹ãƒ¬ãƒ™ãƒ«ã®é–¢æ•°ã§ã‚ã‚‹ã¨ã¿ãªã›ã¾ã™. type IsNumber<X> = X extends number ? true : false; type A = IsNumber<42>; // = true 一方ã§ã“ã®ã‚ˆã†ã«ã—ã¦å®šç¾©ã•ã‚ŒãŸé–¢æ•°ã¯ç¬¬ä¸€ç´šã§ã¯ãªã„, ã¤ã¾ã‚Šé–¢æ•°ãã®ã‚‚ã®ã‚’ä»–ã®é–¢æ•°ã®å¼•æ•°ã¨ã—ã¦æ¸¡ã—ãŸã‚Šã™ã‚‹ã“ã¨ãŒã§ãã¾ã›ã‚“. type FilterUnion<F, X> = X extends unknown ? (F<X> extends true ? X : never) : never; // ~~~~ // ^ Error: Type 'F' is n
型定義ファイルを作æˆã™ã‚‹ | Revised Revised TypeScript in Definitelyland
第7ç« ã€€åž‹å®šç¾©ãƒ•ã‚¡ã‚¤ãƒ«ã‚’ä½œæˆã™ã‚‹ 第6ç« ã€ŒJavaScriptã®è³‡ç”£ã¨@typesã€ã§åž‹å®šç¾©ãƒ•ã‚¡ã‚¤ãƒ«ã®å–得方法ã€ä½¿ã„方をå¦ã³ã¾ã—ãŸã€‚ã—ã‹ã—ã€ä¸–ã®ä¸ã«ã‚ã‚‹JavaScriptライブラリã®ã†ã¡ã€åž‹å®šç¾©ãƒ•ã‚¡ã‚¤ãƒ«ãŒæ›¸ã‹ã‚Œã¦ã„ãªã„ã‚‚ã®ã¯ã¾ã ã¾ã ã‚ã‚Šã¾ã™ã€‚特ã«ã€é–€å¤–ä¸å‡ºã®ç¤¾å†…ライブラリãªã©ã¯èª°ã‚‚手をã¤ã‘ã¦ï¼ˆã„ã‚‹ã‚ã‘ãŒï¼‰ãªã„å‰äººæœªåˆ°ã®åœ°ã§ã™ã€‚ ã—ã‹ã‚‰ã°ï¼è‡ªåˆ†ã§æ›¸ãã—ã‹ã‚ã‚‹ã¾ã„よï¼ã¶ã£ã¡ã‚ƒã‘ãŸè©±ã€ã‚ã‚“ã©ãã•ã„ã®ã§ã™ãŒã€å¾Œã€…ã®å®‰å¿ƒãƒ»å®‰å…¨ã‚’å¾—ã‚‹ãŸã‚ã®æŠ•è³‡ã¨ã—ã¦å‰²ã‚Šãã‚Šã¾ã—ょã†ã€‚ ãªãŠã€è‡ªåˆ†ã§åž‹å®šç¾©ãƒ•ã‚¡ã‚¤ãƒ«ã‚’1行も書ã‹ãšã«TypeScriptã‚’ã‚„ã‚‹ã¨ã€ã©ã“ã‹ã®æ™‚点ã§ä¸ä¾¿ã«æ„Ÿã˜ã‚‹ã§ã—ょã†ã€‚最åˆã®ã†ã¡ã¯ç„¡ç†ã‹ã‚‚ã—ã‚Œã¾ã›ã‚“ãŒã€ã¾ãšã¯äººãŒæ›¸ã„ãŸåž‹å®šç¾©ãƒ•ã‚¡ã‚¤ãƒ«ã‚’èªã‚“ã§çŸ¥è˜ã‚’è“„ãˆã€ã“ã®ä¸–ç•Œã«å…¥ã£ã¦ãã¦ãれるã¨å¬‰ã—ã„ã§ã™ã€‚ 7.1　型ã€å®Ÿä½“ã€ãã—ã¦42。 TypeScriptã¯JavaScriptã«å¯¾ã—ã¦å¾Œä»˜ã§åž‹ã«ã‚ˆã‚‹åˆ¶ç´„ã‚’
tsconfig.json è¨å®šé …目備忘録
型推論オプション 型推論ã®çµæžœãŒå¤‰ã‚ã‚‹ã‚‚ã®ã€‚ âstrict ... 以下ã®ã‚»ãƒƒãƒˆ alwaysStrict strictNullChecks T | null ã‚„ T | undefined ㌠T ã«ç¸®é€€ã—ãªããªã‚‹ã€‚ 例 strictBindCallApply Function ã®å„種メソッド㌠any ã«ç¸®é€€ã—ãªããªã‚‹ã€‚ 例 strictFunctionTypes コールãƒãƒƒã‚¯é–¢æ•°ã®å¼•æ•°ãŒå…±å¤‰ã§ã‚‚unifyã™ã‚‹ã‚ˆã†ã«ãªã‚‹çµæžœã€åž‹å¤‰æ•°ã®æŽ¨è«–優先度ãŒå¤‰ã‚ã‚‹ã“ã¨ãŒã‚る。 例 strictPropertyInitialization noImplicitAny 宣言型ãŒãªã„å ´åˆã«flow typeãŒä½¿ã‚れる機会ãŒå¢—ãˆã‚‹ã€‚ 例 noImplicitThis thisã®å®£è¨€åž‹ãŒãªã„å ´åˆã«æ–‡è„ˆã‹ã‚‰åž‹ãŒæ±ºå®šã•ã‚Œã‚‹æ©Ÿä¼šãŒå¢—ãˆã‚‹ã€‚ 例 useUnknownInCatchVariables catch (
TypeScriptã®d.tsã§CommonJSスタイルã®ã‚¨ã‚¯ã‚¹ãƒãƒ¼ãƒˆã®åž‹ã‚’記述ã™ã‚‹éš›ã«å¼•ã£ã‹ã‹ã£ãŸã“㨠- Qiita
type BearerToken = { access_token: string; }; declare class AddOn {} declare class HostClient { getUserBearerToken: (scopes: string[], clientSettings: AddOnFactory.ClientInfo) => Promise<BearerToken>; } declare function AddOnFactory(): AddOn; declare namespace AddOnFactory { export type HostClient = InstanceType<typeof HostClient>; export interface ClientInfo { key: string } export type AddOn = In
TypeScript 4.9 ã® "satisfies" 演算å㧠union ã®ç¶²ç¾…性ãƒã‚§ãƒƒã‚¯ãŒå°‘ã—楽ã«ãªã‚‹ - Qiita
TypeScript 4.9 ã§æ–°ãŸã«å°Žå…¥ã•ã‚Œã‚‹ satisfies 演算åã«ã¨ã¦ã‚‚期待ã—ã¦ã„ã¾ã™ã€‚個人的ã«å½¹ã«ç«‹ã¡ãã†ã ã¨æ€ã£ãŸãƒ¦ãƒ¼ã‚¹ã‚±ãƒ¼ã‚¹ã¨ã—ã¦ã€switch ã‚„ if 㧠union ã‚’é †ç•ªã«å‡¦ç†ã—ã¦ã„ãã¨ãã®ç¶²ç¾…性ãƒã‚§ãƒƒã‚¯ãŒæŒ™ã’られã¾ã™ã€‚ declare const difficulty: "easy" | "medium" | "hard"; switch (difficulty) { case "easy": case "medium": case "hard": break; default: // OK throw new Error(difficulty satisfies never); } switch (difficulty) { case "easy": case "hard": break; default: // Type 'string' does not
tRPCã‚’å°Žå…¥ã—ãŸã‚‰çˆ†é€Ÿã§Webサービスをリリースã§ããŸè©±
ã“ã®è¨˜äº‹ã¯ 「個人開発Advent Calendar 2022〠8日目ã®è¨˜äº‹ã§ã™ã€‚ ã¯ã˜ã‚㫠先日リリースã•ã‚ŒãŸã€Splarateã¨ã„ã†Webサービスã®é–‹ç™ºã‚’ãŠæ‰‹ä¼ã„ã—ã¦ã„ã¾ã™ã€‚ãã“ã§å°Žå…¥ã—ãŸtRPCãŒé©šãã»ã©ä¾¿åˆ©ã ã£ãŸã®ã§ã€å®Ÿéš›ã®ä½“験を交ãˆã¦ãã®ä½¿ã„ã‚„ã™ã•ã‚’紹介ã—ã¾ã™ã€‚ tRPCã¨ã¯ï¼Ÿ tRPC allows you to easily build & consume fully typesafe APIs without schemas or code generation. https://trpc.io/docs/ tRPCã¯ã€ã‚¹ã‚ーマやコード生æˆãªã—ã§åž‹å®‰å…¨ãªAPIã‚’ç°¡å˜ã«æ§‹ç¯‰ã—ã€å‘¼ã³å‡ºã™ã“ã¨ã®ã§ãるライブラリã§ã™ã€‚ tRPC is for full-stack TypeScript developers. ã¨è¬³ã‚ã‚Œã¦ã„るよã†ã«ã€TypeScriptã«ç‰¹åŒ–ã—ã¦ä½œã‚‰ã‚Œã¦ãŠã‚Šã€Ty
Fast and type-safe full stack framework, for TypeScript | frourio
From installation to deployment in one command All you need is TypeScript
TypeScript エラー処ç†ãƒ‘ターン - Object.create(null)
M å¹´å‰ã«ã‚‚ N 年後ã«ã‚‚人類ã¯åŒã˜è©±ã‚’ã—ã¦ã„ã‚‹. ã¾ã¨ã‚ エラーã®ç™ºç”Ÿæ–¹æ³•ã¯ throw 㨠return ã«å¤§åˆ¥ã§ãã‚‹ throw ã«ã¯ç°¡æ½”ã•, return ã«ã¯æ˜Žçžã•ã¨åž‹å®‰å…¨æ€§ã¨ã„ã£ãŸç‰¹å¾´ãŒã‚ã‚‹ ã©ã¡ã‚‰ã®æ–¹æ³•ãŒã‚ˆã‚Šé©ã—ã¦ã„ã‚‹ã‹ã¯ãƒ—ãƒã‚°ãƒ©ãƒ ã®è¦æ¨¡, エラーã®ç¨®é¡ž, ãƒãƒ³ãƒ‰ãƒªãƒ³ã‚°ã®æ–¹æ³•ãªã©ãŒåˆ¤æ–ã®ææ–™ã«ãªã‚‹ 実際ã«ã©ã¡ã‚‰ã®æ–¹æ³•ã‚’使ã†ã‹ã¯ä¸Šã®åˆ¤æ–ææ–™ã¨, フレームワークやプãƒã‚¸ã‚§ã‚¯ãƒˆã®ã‚³ãƒ¼ãƒ‡ã‚£ãƒ³ã‚°è¦ç´„ãªã©ã‚‚åˆã‚ã›ã¦è¤‡åˆçš„ã«æ±ºã‚ã‚‹ã®ãŒã‚ˆã„ エラー発生方法ã®åˆ†é¡ž ã¾ãšå‰æã¨ã—ã¦, 関数ã‹ã‚‰å‘¼ã³å‡ºã—å…ƒã«ã‚¨ãƒ©ãƒ¼ã‚’ä¼ãˆã‚‹æ–¹æ³•ã¯ä»¥ä¸‹ã® 2 ã¤ã«å¤§åˆ¥ã§ãã¾ã™. 逆ã«ã“ã®è¨˜äº‹ã§ã¯ã“れ以上ã®å…·ä½“çš„ãªæ–¹æ³•ã«ã¤ã„ã¦ã®è°è«–ã¯ã—ã¾ã›ã‚“. throw エラーを throw ã—ã¦å‘¼ã³å‡ºã—å…ƒã«ä¼ãˆã‚‹æ–¹æ³•ã§ã™. 例ãˆã°ä»¥ä¸‹ã®ã‚ˆã†ãªã‚‚ã®ãŒå½“ã¦ã¯ã¾ã‚Šã¾ã™. throw new Error("...") Promise.rej
Announcing TypeScript 4.9 Beta - TypeScript
Today we’re announcing our beta release of TypeScript 4.9! To get started using the beta, you can get it through NuGet, or- use npm with the following command: npm install -D typescript@beta You can also get editor support by Downloading for Visual Studio 2022/2019 Following directions for Visual Studio Code. Here’s a quick list of what’s new in TypeScript 4.9! The satisfies Operator Unlisted Prop
Zodã§çœŸã®TypeScript firstを手ã«ã™ã‚‹
fullstack TSãªã‚¢ãƒ—リケーションも増ãˆã¦ããŸæ˜¨ä»Šã€TSã§validatorを実装ã™ã‚‹éš›ã«ä½•ã‚’採用ã™ã‚‹ã‹ã¯ä¸€å¤§ãƒˆãƒ”ックã§ã™ã€‚今回ã¯ã€ãã®ä¸ã§ã‚‚æ–°ã—ã‚ãªãƒ©ã‚¤ãƒ–ラリã§ã‚ã‚ŠBlitzも採用ã—ã¦ã„ã‚‹Zodã«ã¤ã„ã¦è¦‹ã¦ã„ãã¾ã™ã€‚ Zodã¨ã¯ Zodã®ç‰¹å¾´ã¨ã—ã¦ã€Schema firstãªvalidationライブラリã§ã‚ã‚‹ã¨ã„ã†ã®ãŒã‚ã‚Šã¾ã™ã€‚ validateã™ã‚‹schema（å˜ä¸€ã®schemaã‹ã‚‰object, arrayã¾ã§ï¼‰ã‚’定義ã—ã€ãれをベースã«parseã™ã‚‹ã¨ã„ã†ã‚‚ã®ã§ã™ã€‚ å…¬å¼ã«ã‚ã‚‹exampleを見ã¦ã¿ã¾ã—ょã†ã€‚ import { z } from "zod"; // creating a schema for strings const mySchema = z.string(); mySchema.parse("tuna"); // => "tuna" mySchema.p
Introduction
A simple yet powerful testing framework for Node.js Japa comes with everything you need to test your backend applications. Be it writing JSON API tests using an Open API schema or writing browser tests using Playwright. Unlike other testing frameworks born out of the frontend ecosystem, Japa focuses only on testing backend applications and libraries. Therefore, Japa is simpler, faster, and bloatwa
tRPC - Move Fast and Break Nothing. End-to-end typesafe APIs made easy. | tRPC
Move Fast and Break Nothing. End-to-end typesafe APIs made easy.Experience the full power of TypeScript inference to boost productivity for your full-stack application.
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GitHub - ts-essentials/ts-essentials: All essential TypeScript types in one place 🤙
GitHub - gvergnaud/hotscript: A library of composable functions for the type-level! Transform your TypeScript types in any way you want using functions you already know.
GitHub - potato4d/dodai: Static Site Generator
GitHub - t3-oss/create-t3-app: The best way to start a full-stack, typesafe Next.js app
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