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ãªãœJavaScriptã®fetchã¯awaitã‚’2回ã—ãªã„ã¨ãƒ¬ã‚¹ãƒãƒ³ã‚¹ã‚’å–ã‚Œãªã„ã®ã‹ | maguro​.dev
const resp = await fetch("https://api.example.com/data"); await ã‚’2回書ã„ã¦ã„ã‚‹ã®ãŒæ°—ã«ãªã£ãŸã“ã¨ã¯ã‚ã‚Šã¾ã›ã‚“ã‹ï¼Ÿ1回㮠await ã§ä¸€æ°—ã«ãƒ¬ã‚¹ãƒãƒ³ã‚¹ãƒœãƒ‡ã‚£ã¾ã§å–ã‚ŒãŸã‚‰æ¥½ãªã®ã«ã€ã¨æ€ã£ãŸã“ã¨ã¯ãªã„ã§ã—ょã†ã‹ã€‚ ã¨ã‚る休日ã®åˆå‰ä¸ã€ã„ã¤ã‚‚ã®ã‚ˆã†ã«YouTube上ã§ãƒ©ã‚¤ãƒ–コーディング動画を見ã¦ã„ã¾ã—ãŸ1。ãã“ã§é…信者ã®æ–¹ãŒã€fetchを使ã£ã¦ãƒ¬ã‚¹ãƒãƒ³ã‚¹ãƒœãƒ‡ã‚£ã‚’å–å¾—ã™ã‚‹éš›ã«2回目ã®awaitãŒå¿…è¦ã§ã‚ã‚‹ã“ã¨ã«å¯¾ã—ã¦ã€ã€Œãªã‚“ã§fetchã¯ã“ã‚“ãªã«ã‚ã‚“ã©ãã•ã„ã‚“ã ã‚ã†ã€ã¨è¨€ã£ã¦ã„ã¾ã—ãŸã€‚言ã‚ã‚Œã¦ã¿ã‚‹ã¨ã€ç¢ºã‹ã«ã‚ã‚“ã©ãã•ã„よã†ãªæ°—ã‚‚ã—ã¾ã™ã€‚ ã“ã®è¨˜äº‹ã§ã¯ã€ãªãœ fetch ãŒã“ã®ã‚ˆã†ãªè¨è¨ˆã«ãªã£ã¦ã„ã‚‹ã®ã‹ã‚’ã„ã‚ã„ã‚ãªè¦³ç‚¹ã‹ã‚‰æŽ˜ã‚Šä¸‹ã’ã¦ã¿ã¾ã™ã€‚ fetch ã®ä½¿ã„æ–¹ãŠã•ã‚‰ã„ ã¾ãšã¯JavaScriptã®fetchã®åŸºæœ¬çš„ãªä½¿ã„方を確èªã—ã¦
fetch() ã§ã¯ Host ヘッダーをè¨å®šã§ããªã„ã—話ã¯ãã“ã¾ã§å˜ç´”ã˜ã‚ƒãªã„ - Object.create(null)
JavaScript (TypeScript) ã®ã‚³ãƒ¼ãƒ‰ã‹ã‚‰ HTTP リクエストをé€ã‚‹æ‰‹æ®µã¨ã—ã¦, 最近ã§ã¯ Web 標準ã®ä¸€ã¤ã§ã‚ã‚‹ Fetch Standard ã§å®šç¾©ã•ã‚ŒãŸ fetch() ãŒä½¿ã‚れるã“ã¨ãŒå¤šã„ã§ã™ã. await fetch("https://example.com"); リクエストヘッダーã«ã¯ Host ã‚’è¨å®šã§ããªã„ Fetch Standard ã§ã¯ Host ã‚’ã¯ã˜ã‚ã¨ã—㦠Content-Length, Cookie, Origin ãªã©, ã„ãã¤ã‹ã®ãƒªã‚¯ã‚¨ã‚¹ãƒˆãƒ˜ãƒƒãƒ€ãƒ¼ã‚’è¨å®š (JavaScript ã‹ã‚‰ä¸Šæ›¸ã) ã™ã‚‹ã“ã¨ãŒç¦æ¢ã•ã‚Œã¦ã„ã¾ã™. https://fetch.spec.whatwg.org/#forbidden-request-header ã„ãšã‚Œã®ãƒ˜ãƒƒãƒ€ãƒ¼ã‚‚ HTTP ã‚„ã‚»ã‚ュリティ上ã®å–り決ã‚ã«å¾“ã†ãŸã‚ã«, ページ㮠JavaSript
フãƒãƒ³ãƒˆã‚¨ãƒ³ãƒ‰ API コール時ã®ã‚¨ãƒ©ãƒ¼ãƒãƒ³ãƒ‰ãƒªãƒ³ã‚°ã‚’軽ãæ•´ç†ï¼ˆFetch API・typescript-fetch・TanStack Query） - カミナシ エンジニアブãƒã‚°
カミナシã®ã‚½ãƒ•ãƒˆã‚¦ã‚§ã‚¢ã‚¨ãƒ³ã‚¸ãƒ‹ã‚¢ä½è—¤ã§ã™ã€‚カミナシレãƒãƒ¼ãƒˆã®é–‹ç™ºã«æºã‚ã£ã¦ã„ã¾ã™ã€‚ フãƒãƒ³ãƒˆã‚¨ãƒ³ãƒ‰ã®ã‚¨ãƒ©ãƒ¼ã¯ã€Œç”»é¢ãƒªãƒãƒ¼ãƒ‰ã‚„ブラウザå†èµ·å‹•ã§å¾©æ—§ã§ãる（ã‹ã‚‚ã—ã‚Œãªã„）ã€ã€Œã‚¯ãƒ©ãƒƒã‚·ãƒ¥ã—ã¦ã‚‚ユーザーã®ç«¯æœ«ã«é–‰ã˜ã‚‹ã€ãªã©ã®ç†ç”±ã‹ã‚‰ã€ãƒãƒƒã‚¯ã‚¨ãƒ³ãƒ‰ã‚ˆã‚Šã¯ç²¾ç·»ã«æ‰±ã‚ã‚Œãªã„傾å‘ãŒã‚ã‚‹ã¨å€‹äººçš„ã«ã¯æ„Ÿã˜ã¦ã„ã¾ã™ã€‚ ãã®ä¸€æ–¹ã€ã‚«ãƒŸãƒŠã‚·ãƒ¬ãƒãƒ¼ãƒˆã¯ã€ãƒŽãƒ³ãƒ‡ã‚¹ã‚¯ãƒ¯ãƒ¼ã‚«ãƒ¼å‘ã‘ã®ä¸å®‰å®šãªãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ç’°å¢ƒã§åˆ©ç”¨ã•ã‚Œã‚‹ã“ã¨ã‚‚多々ã‚るアプリã§ã™ã€‚ãã®ãŸã‚ã€ãƒ‡ã‚¸ã‚¿ãƒ«ãƒ„ールã«ä¸æ…£ã‚Œãªæ–¹ã®ãŸã‚ã«ç²¾ç·»ãªãƒ•ã‚£ãƒ¼ãƒ‰ãƒãƒƒã‚¯ãŒå¿…è¦ã¨ã•ã‚Œã‚‹ã€ãƒªãƒãƒ¼ãƒ‰ã«é ¼ã‚‹ã“ã¨ãŒé›£ã—ã„ケースãŒã‚ã‚‹ã€ãªã©ã®ç†ç”±ã§ã‚¨ãƒ©ãƒ¼ã®æ‰±ã„ã«ã‚‚æ…Žé‡ã«ãªã‚‹å¿…è¦ãŒã‚ã‚Šã¾ã™ã€‚ 本記事ã§ã¯ã€ã‚«ãƒŸãƒŠã‚·ãƒ¬ãƒãƒ¼ãƒˆã®ãƒ•ãƒãƒ³ãƒˆã‚¨ãƒ³ãƒ‰é–‹ç™ºã‚’ã™ã‚‹ä¸ã§ã€ ãƒãƒƒã‚¯ã‚¨ãƒ³ãƒ‰ã® API コール時ã«ã‚¨ãƒ©ãƒ¼ãŒç™ºç”Ÿã™ã‚‹æ¡ä»¶ã¨ãã®å†…容（型・クラス） ã“れらエラーをãƒãƒ³ãƒ‰ãƒªãƒ³ã‚°ã™ã‚‹ç®‡æ‰€ ã«ã¤ã„ã¦ã€æŠŠæ¡ã—ã¦ãŠããŸã„ã¨æ„Ÿã˜
CVE-2025-22150 - GitHub Advisory Database
Impact Undici fetch() uses Math.random() to choose the boundary for a multipart/form-data request. It is known that the output of Math.random() can be predicted if several of its generated values are known. If there is a mechanism in an app that sends multipart requests to an attacker-controlled website, they can use this to leak the necessary values. Therefore, An attacker can tamper with the req
Release v7.0.0 · nodejs/undici
What's Changed fetch: fix content-encoding order by @tsctx in #3343 Add regression test for broken body by @mcollina in #3346 build(deps): bump node from 075a5cc to 9af472b in /build by @dependabot in #3355 fix: post request signal by @Gigioliva in #3354 Revert "fix: post request signal (#3354)" by @ronag in #3359 websocket: don't use pooled buffer in mask pool by @tsctx in #3357 fix: consider byt
Why Patching Globals Is Harmful
Level up your testing skills by learning directly from me! Read more Honestly, I'd never thought I'd be writing about this, but the matter of patching globals turned out to be one of those topics that a lot of engineers seem to misunderstand. Most of us don't do monkey-patching, and even fewer stay around those implementations long enough to witness their impact. All the more reason to talk about
Fetch APIã¯ã€ŒPATCHã€ã ã‘大文å—ã¨å°æ–‡å—ã®æŒ™å‹•ãŒç•°ãªã‚‹
const url = "https://fetch-api-normalization.deno.dev"; await fetch(url, { method: "PATCH" }); await fetch(url, { method: "patch" }); 実行ã™ã‚‹ã¨ã€æ¬¡ã®ã‚ˆã†ãªã‚¨ãƒ©ãƒ¼ã‚’å¾—ã‚‹ã¯ãšã§ã™ã€‚ PATCH ã‚’å°æ–‡å—ã§æ›¸ã„ãŸéš›ã®ã‚¨ãƒ©ãƒ¼ã®ä¸€ä¾‹ ã•ã¦ã€ã©ã®ã‚ˆã†ãªæ¡ä»¶ã§ã“ã®ã‚¨ãƒ©ãƒ¼ãŒç™ºç”Ÿã™ã‚‹ã®ã§ã—ょã†ã‹ï¼Ÿã“ã‚ŒãŒæ„図ã•ã‚ŒãŸã‚‚ã®ãªã®ã ã¨ã—ãŸã‚‰ã€ GET ã‚„ POST ã¯å¤§æ–‡å—・å°æ–‡å—を無視ã—ã¦ã‚ˆã㦠PATCH ã¯ç„¡è¦–ã§ããªã„ç†ç”±ãŒãªã«ã‹ã‚ã‚‹ã®ã§ã—ょã†ã‹ï¼Ÿä»¥ä¸‹ã§ãã®ç†ç”±ã‚’探ã£ã¦ã¿ã¾ã—ょã†ã€‚ ã„ã¤ã‚¨ãƒ©ãƒ¼ãŒç™ºç”Ÿã™ã‚‹ã‹ ã“ã®ã‚¨ãƒ©ãƒ¼ã¯ã€ Fetch API を利用ã—ã¦å¤–部㮠HTTP サーãƒãƒ¼ã«å¯¾ã—ã¦ãƒªã‚¯ã‚¨ã‚¹ãƒˆã‚’è¡Œã†æ™‚ã«ã€ PATCH ã¨æ›¸ãã¹ãã¨ã“ã‚ã‚’ patch ã¨æ›¸ã„ã¦ã„ã‚‹ã¨ç™ºç”Ÿã—ã¾ã™ã€‚
AbortSignal.any(), AbortSignal.timeout(), ãã—㦠addEventListener() ã® Signal | blog.jxck.io
Intro 最近 AbortSignal.any() ãŒæ案ã•ã‚Œã€æ€¥é€Ÿã«å®Ÿè£…ãŒé€²ã‚“ã§ã„る。 ã™ã§ã«å®šç¾©ã•ã‚Œã¦ã„ã‚‹ AbortSignal.timeout() ã‚„ addEventListener() ã¸ã® Signal ãªã©ã‚‚å«ã‚ã€éžåŒæœŸå‡¦ç†ã®ä¸æ–を実装ã™ã‚‹éš›ã® API ã¯ã‹ãªã‚Šæ•´å‚™ã•ã‚Œã¦ããŸã€‚ ã“れら API ã®ãƒ¢ãƒãƒ™ãƒ¼ã‚·ãƒ§ãƒ³ã¨è¨è¨ˆã‚’ä¸å¿ƒã«ã¾ã¨ã‚る。 Abort 後ã®ãƒªã‚½ãƒ¼ã‚¹è§£æ”¾ AbortSignal ã«ã‚ˆã£ã¦ã€éžåŒæœŸå‡¦ç†ã®ã‚ャンセルãŒå¯èƒ½ã«ãªã£ãŸã€‚例ã¨ã—ã¦ã€Server 上ã§ã® Fetch ã®ã‚¿ã‚¤ãƒ アウトã®ä¾‹ã‚’考ãˆã‚ˆã†ã€‚ app.get("/entries", async (req, res) => { const perRequestController = new AbortController() const perRequestSignal = perRequestContr
Boost Resource Loading With fetchpriority, A New Priority Hint — Smashing Magazine
Loading experience is crucial to the user’s first impression and overall usability, so Google defined Largest Contentful Paint (LCP) metric to measure how quickly the main content loads and is displayed to the user. This new attribute will enable us to fine-tune relative resource priority, improve LCP performance, deprioritize JavaScript fetch calls, and much more. Let’s check out fetchpriority an
fetch() In Node.js Core: Why You Should Care
Node.js v17.5 introduces support for fetch() – a popular cross-platform HTTP client API that works in browsers and Web/Service Workers – as an experimental core feature. fetch() support has been a long-requested addition by many, who want to write cross-platform HTTP request code and are familiar with the fetch() API shape and call patterns. So much so that the node-fetch module exists solely to b
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Release v7.1.0 · nodejs/undici
GitHub - WICG/private-network-access
Safe Data Fetching in Modern JavaScript
Specification outline · Issue #12 · wintercg/fetch
GitHub - BetterTyped/hyper-fetch: âš¡ Fetching and realtime data exchange framework.
Global `fetch` breaks `source-map` · Issue #42638 · nodejs/node
Add `Response.json` static method by lucacasonato · Pull Request #1392 · whatwg/fetch
AbortSignal: throwIfAborted() method
Web Platform APIs
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