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efcl id:efcl

Promisesã«é–¢ã™ã‚‹efclã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (356)

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Mongoose ã® callback ã‚’ Promise ã«ç§»è¡Œã™ã‚‹æ‰‹æ³•
Developer Experience & Performance ãƒãƒ¼ãƒ ã§ã‚¨ãƒ³ã‚¸ãƒ‹ã‚¢ã‚’ã—ã¦ã„ã‚‹å¤§çŸ¢ã§ã™ã€‚ä»Šå›žã¯ JavaScript ã®éžåŒæœŸå‡¦ç†ã§ä½¿ã‚ã‚Œã¦ã„ã‚‹ callback ã‚’ Promise ã«ç§»è¡Œã™ã‚‹æ‰‹æ³•ã«ã¤ã„ã¦ã€å…·ä½“çš„ãªäº‹ä¾‹ã‚’ã‚‚ã¨ã«ç´¹ä»‹ã—ã¾ã™ã€‚ èƒŒæ™¯ãƒ—ãƒ¬ã‚¤ãƒ‰ã§ã¯ Mongo DB Atlas ã¨ã„ã† Mongo DB ã®ãƒžãƒãƒ¼ã‚¸ãƒ‰ã‚µãƒ¼ãƒ“ã‚¹ã‚’ä½¿ã£ã¦ãŠã‚Šã€ã‚¯ãƒ©ã‚¤ã‚¢ãƒ³ãƒˆãƒ©ã‚¤ãƒ–ãƒ©ãƒªã«ã¯ã»ã¨ã‚“ã©ã®ã‚·ã‚¹ãƒ†ãƒ ã§ Mongoose ã‚’ä½¿ç”¨ã—ã¦ã„ã¾ã™ã€‚ Mongo DB Atlas ã§ã¯2025å¹´7æœˆã« Mongo DB 6.0 ãŒ EOL ã«ãªã‚‹ãŸã‚ã€Mongo DB 7.0 ã«ãƒãƒ¼ã‚¸ãƒ§ãƒ³ã‚¢ãƒƒãƒ—ã™ã‚‹å¿…è¦ãŒã‚ã‚Šã¾ã™ã€‚ã¾ãŸã€ãã®ãŸã‚ã«ã¯ Mongoose ã®ãƒãƒ¼ã‚¸ãƒ§ãƒ³ã‚’ 6.x ã‹ã‚‰ 7.x ã«ä¸Šã’ã‚‹å¿…è¦ãŒã‚ã‚Šã¾ã™ã€‚ 6.x ã‹ã‚‰ 7.x ã«ã‚¢ãƒƒãƒ—ãƒ‡ãƒ¼ãƒˆã™ã‚‹éš›ã«æœ€ã‚‚å¤§ããå¤‰æ›´ãŒå¿…è¦ã ã£ãŸã®ã¯ dropp
efcl 2024/12/08
Npde.js Callbackã‹ã‚‰Promiseã¸ã®ç§»è¡Œ

JavaScript

Promises
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WebAssembly JSPI has a new API Â· V8
WebAssemblyâ€™s JavaScript Promise Integration (JSPI) API has a new API, available in Chrome release M126. We talk about what has changed, how to use it with Emscripten, and what is the roadmap for JSPI. JSPI is an API that allows WebAssembly applications that use sequential APIs to access Web APIs that are asynchronous. Many Web APIs are crafted in terms of JavaScript Promise objects: instead of im
efcl 2024/06/12
WebAssemblyã®JavaScript Promise Integrationã«ã¤ã„ã¦

WebAssembly

Promises

article
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GitHub - tc39/proposal-signals: A proposal to add signals to JavaScript.
Stage 1 (explanation) TC39 proposal champions: Daniel Ehrenberg, Yehuda Katz, Jatin Ramanathan, Shay Lewis, Kristen Hewell Garrett, Dominic Gannaway, Preston Sego, Milo M, Rob Eisenberg Original authors: Rob Eisenberg and Daniel Ehrenberg This document describes an early common direction for signals in JavaScript, similar to the Promises/A+ effort which preceded the Promises standardized by TC39 i
efcl 2024/04/06
Signal Proposal

ECMAScript

proposal
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JavaScript Visualized - Promise Execution
Promises in JavaScript can seem a bit daunting at first, but understanding what's happening under the hood can make them much more approachable. In this blog post, we'll dive deep into some of the inner workings of promises and explore how they enable non-blocking asynchronous tasks in JavaScript. I'm still working on making this blog better on mobile devices, mobile browsers don't always render t
efcl 2024/03/31
Promiseã®å‹•ä½œã‚’ä»•æ§˜çš„ãªå†…éƒ¨å‹•ä½œã‚’ä½¿ã£ã¦ãƒ“ã‚¸ãƒ¥ã‚¢ãƒ©ã‚¤ã‚ºã—ã¦ã„ã‚‹è¨˜äº‹ã€‚ éžåŒæœŸå‡¦ç†ã¨Microtask Queueã«ã¤ã„ã¦

JavaScript

Promises

article

ECMAScript
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The Hidden Performance Cost of NodeJS and GraphQL
NodeJS and GraphQL are popular techno logies for building web applications, but in my experience, they come with certain scaling and performance tradeoffs to be aware of. tl;dr: GraphQL's modular structure generally leads to code that instantiates excessive promises, which degrades request performance. Benchmarks show a 2-3x latency increase. Thanks for reading Software at Scale! Subscribe for free
efcl 2023/10/10
GraphQLã§resolverã®å‡¦ç†ãŒå¢—ãˆã‚‹ã»ã©ãƒ‘ãƒ•ã‚©ãƒ¼ãƒžãƒ³ã‚¹ãŒæ‚ªããªã£ãŸåŽŸå› ã‚’èª¿æŸ»ã—ãŸè¨˜äº‹ã€‚ resolverå†…ã§Promiseã®å¤šç”¨ã¨`async_hooks`ã®åˆ©ç”¨ãŒã‚ªãƒ¼ãƒãƒ¼ãƒ˜ãƒƒãƒ‰ã¨é–¢é€£ã—ã¦ã„ã‚‹ã¨ã„ã†è©±ã€‚

nodejs

Promises

performance

article
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setTimeout ã‚’å®Œç’§ã«ç†è§£ã™ã‚‹
setTimeout ã¯ã€æŒ‡å®šã•ã‚ŒãŸæ™‚é–“ä»¥é™ã«æŒ‡å®šã•ã‚ŒãŸã‚³ãƒ¼ãƒ‰ã‚’å®Ÿè¡Œã™ã‚‹ JavaScript ã® API ã§ã™ã€‚ãƒ–ãƒ©ã‚¦ã‚¶ã§ã‚‚ Node.js ã§ã‚‚åºƒãä½¿ã‚ã‚Œã¦ã„ã‚‹ã®ã§ã™ãŒã€å®Ÿè£…ã¯ã¾ã¡ã¾ã¡ã§ã€è‰²ã€…ã¨ç‰¹æ®Šãªæ¡ä»¶ã‚‚å¤šãã€æŒ™å‹•ã‚’å®Œç’§ã«ç†è§£ã—ã¦ã„ã‚‹äººã¯å°‘ãªã„ã¨æ€ã„ã¾ã™ã€‚ã“ã®è¨˜äº‹ã§ã¯ã€ãã‚“ãª setTimeout ã‚’å¯èƒ½ãªé™ã‚Šæ·±å €ã‚Šã—ã¦ã¿ã‚ˆã†ã¨æ€ã„ã¾ã™ã€‚ å…ˆã«æ›¸ã„ã¦ãŠãã¾ã™ãŒã€ã‚‚ã®ã™ã”ããƒ‹ãƒƒãƒã§ç´°ã‹ã„è©±ã°ã‹ã‚Šä¸¦ã³ã¾ã™ã€‚çªç„¶ç§ãŒã€ãŸã ç´”ç²‹ã« setTimeout ã«ã¤ã„ã¦èª¿ã¹ãŸããªã£ãŸã®ã§ã€ãã®çµæžœã‚’ã¾ã¨ã‚ãŸã ã‘ã®ã‚‚ã®ã§ã™ã€‚æ™®é€šã«é–‹ç™ºã—ã¦ã„ã‚‹äººã«ã¯å¿…è¦ã®ãªã„æƒ…å ±ãŒå¤šããªã‚‹ã§ã—ã‚‡ã†ã€‚ã“ã®è¨˜äº‹ã¯åŸºç¤Žã‹ã‚‰ setTimeout ã‚’å¦ã¼ã†ã€ã¨ã„ã†æ–¹ã«ã¯å…¨ç„¶å‘ã‹ãªã„ã¨æ€ã„ã¾ã™ã€‚ ã¾ãŸã€JavaScript ã®ã‚¤ãƒ™ãƒ³ãƒˆãƒ«ãƒ¼ãƒ—ã«ã¤ã„ã¦ã‚ã‚‹ç¨‹åº¦ç†è§£ã—ã¦ã„ã‚‹ã“ã¨ã‚’å‰æã¨ã—ã¾ã™ã€‚ãã®è©³ã—ã„ç†è§£ã«ã¯ã€@PADAone ã•ã‚“
efcl 2023/10/08
Taskã«è¿½åŠ ã™ã‚‹setTimeout/setInterva/setImmidiate/postMessageã€‚ MicroTaskã«è¿½åŠ ã™ã‚‹Promise/queueMicrotask/nextTickã€‚ setTimeoutã®ãƒã‚¹ãƒˆã«ã¯ã‚¹ãƒãƒƒãƒˆãƒªãƒ³ã‚°ãŒå®Ÿè£…ä¾å˜ã§ã‹ã‹ã‚‹ã“ã¨ã«ã¤ã„ã¦ã€‚

JavaScript

Promises

article
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ã‚¿ã‚¹ã‚¯ã‚ãƒ¥ãƒ¼ã¨ãƒžã‚¤ã‚¯ãƒã‚¿ã‚¹ã‚¯ã‚ãƒ¥ãƒ¼ï½œã‚¤ãƒ™ãƒ³ãƒˆãƒ«ãƒ¼ãƒ—ã¨ãƒ—ãƒãƒŸã‚¹ãƒã‚§ãƒ¼ãƒ³ã§å¦ã¶JavaScriptã®éžåŒæœŸå‡¦ç†
efcl 2023/10/08
WHATWGã®Task Queueã¨Micro Task Queueã«ã¤ã„ã¦ã€‚

JavaScript

Promises

article

spec
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nextTick vs queueMicrotask vs Promise.resolve vs setTimeout - Qiita
ã¯ã˜ã‚ã« æ™®æ®µã®é–‹ç™ºã§ãªã‹ãªã‹ãŠç›®ã«ã‹ã‹ã‚‹ã“ã¨ã‚‚ä½¿ã†ã“ã¨ã‚‚æ»…å¤šã«ãªã„ queueMicrotask ã«ã¤ã„ã¦èˆˆå‘³ã‚’æŒã£ãŸã¤ã„ã§ã«ã€ process.nextTick ã‚„ Promise, setTimeout ãªã©ã¨ã®æ¯”è¼ƒã‚’ã—ã¦ã¿ã¾ã—ãŸã€‚ TL;DR ä¸‹è¨˜ã®å„ªå…ˆåº¦é †ã§ã‚ãƒ¥ãƒ¼ã‹ã‚‰ã‚¿ã‚¹ã‚¯ãŒå–ã‚Šå‡ºã•ã‚Œå‡¦ç†ã•ã‚Œã‚‹ã€‚ nextTick queueMicrotask, Promise.resolve â†’ Microtask setTimeout â†’ Task (a.k.a. Macrotask) ã‚ˆã‚Šå…·ä½“çš„ã«ã¯ã€Microtaskã‚ãƒ¥ãƒ¼ã¨Taskã‚ãƒ¥ãƒ¼ã®2ã¤ã®ã‚ãƒ¥ãƒ¼ãŒã‚ã‚Šã€Microtaskã‚ãƒ¥ãƒ¼ãŒå„ªå…ˆçš„ã«å‡¦ç†ã•ã‚Œã‚‹ã‚ˆã†ã«ãªã£ã¦ã„ã‚‹ã€‚ Microtaskã‚ãƒ¥ãƒ¼ãŒç©ºã§ãªã„é™ã‚Šã¯Taskã‚ãƒ¥ãƒ¼ã®ä¸èº«ã‚’å®Ÿè¡Œã—ãªã„æ§‹é€ ã¨ãªã£ã¦ãŠã‚Šã€queueMicrotask, Promise.resolve ã§ã¯ Micr
efcl 2023/10/08
microtaskã®ã‚ãƒ¥ãƒ¼ãŒç©ºã«ãªã‚‰ãªã„ã¨ã€æ¬¡ã®taskã®å‡¦ç†ã®ã‚ãƒ¥ãƒ¼ã¯å‡¦ç†ã•ã‚Œãªã„ãŸã‚ã€`queueMicrotask` == `Promire.resolve().then`ã®ä¸ã§microtaskã‚’ç©ã‚€ãƒ«ãƒ¼ãƒ—ã‚’ã™ã‚‹ã¨ç„¡é™ãƒ«ãƒ¼ãƒ—ã™ã‚‹å¯èƒ½æ€§ãŒã‚ã‚‹è©±

JavaScript

article

Promises
ãƒªãƒ³ã‚¯
GitHub - tc39/proposal-await-dictionary: A proposal to add Promise.ownProperties(), Promise.fromEntries() to ECMAScript
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efcl 2023/03/26
Promise.allã®ã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆç‰ˆã®Proposal

ECMAScript

proposal

Promises
ãƒªãƒ³ã‚¯
GitHub - open-draft/deferred-promise: A Promise+ compatible abstraction that defers resolving/rejecting promises to another closure.
efcl 2023/02/17
Deferred Promise

JavaScript

Promises

library
ãƒªãƒ³ã‚¯
Introducing the WebAssembly JavaScript Promise Integration API Â· V8
The JavaScript Promise Integration (JSPI) API allows WebAssembly applications that were written assuming synchronous access to external functionality to operate smoothly in an environment where the functionality is actually asynchronous. This note outlines what the core capabilities of the JSPI API are, how to access it, how to develop software for it and offers some examples to try out. What is â€˜
efcl 2023/01/21
WebAssemblyã®Promise API

WebAssembly

Promises
ãƒªãƒ³ã‚¯
ã‚¤ãƒ™ãƒ³ãƒˆãƒ«ãƒ¼ãƒ—ã¨ãƒ—ãƒãƒŸã‚¹ãƒã‚§ãƒ¼ãƒ³ã§å¦ã¶JavaScriptã®éžåŒæœŸå‡¦ç†
JavaScript ã®éžåŒæœŸå‡¦ç†ã¯éžå¸¸ã«é›£ã—ãã€ãã®é›£ã—ã•ã®åŽŸå› ã¯ã€Œåˆ¶å¾¡ã®æµã‚Œã€ãŒæŽ´ã¿ã¥ã‚‰ã„ã“ã¨ã«ã‚ã‚Šã¾ã™ã€‚ ã“ã®æœ¬ã§ã¯éžåŒæœŸå‡¦ç†ã‚’ç†è§£ã™ã‚‹ãŸã‚ã«å¿…è¦ãªæ¦‚å¿µã§ã‚ã‚Šã€ä»•çµ„ã¿ã§ã‚‚ã‚ã‚‹ã‚¤ãƒ™ãƒ³ãƒˆãƒ«ãƒ¼ãƒ—ã§ãƒ—ãƒãƒŸã‚¹ãƒã‚§ãƒ¼ãƒ³ã®å‡¦ç†ãŒã©ã®ã‚ˆã†ã«è¡Œã‚ã‚Œã‚‹ã‹ã‚’ã‚¯ã‚¤ã‚ºå½¢å¼ã§å¦ã¶ã“ã¨ã«ã‚ˆã£ã¦ã€éžåŒæœŸå‡¦ç†ã®ã€Œåˆ¶å¾¡ã®æµã‚Œã€ã‚’æŽ´ã‚ã‚‹ã‚ˆã†ã«è¨“ç·´ã—ã¾ã™ã€‚ çŸ¥è˜é¢ã«ã¤ã„ã¦ã¯ä¸æž¢ã¨ãªã‚‹ã‚¤ãƒ™ãƒ³ãƒˆãƒ«ãƒ¼ãƒ—ã®æ©Ÿæ§‹ã‹ã‚‰ã€å®Ÿè¡Œç’°å¢ƒã¨ APIã€async/await ã‚„ Promise.all ãªã©ã®ä¸€é€šã‚Šã®ç¯„å›²ã‚’å¦ç¿’ã—ã€æœ€çµ‚çš„ã«ã¯ä¸¦åˆ—åŒ–ã‚„é †åºã¥ã‘ã¦åå¾©å‡¦ç†ã‚’è¡Œã†ãŸã‚ã®åˆ¶å¾¡æ–¹æ³•ã¨ TypeScript ã§ã®åž‹æ³¨é‡ˆã¾ã§ã‚’ç¶²ç¾…ã—ã¾ã™ã€‚
efcl 2022/05/01
Promiseã¨Event loop

JavaScript

Promises

book
ãƒªãƒ³ã‚¯
JSã®éžåŒæœŸå‡¦ç†ã‚’ç†è§£ã™ã‚‹ãŸã‚ã«å¿…è¦ã ã£ãŸçŸ¥è˜ã¨å¦ç¿’ãƒãƒ¼ãƒ‰ãƒžãƒƒãƒ—
ã¯ã˜ã‚ã« JavaScript ã®éžåŒæœŸå‡¦ç†ã‚’å¦ç¿’ã—ã¦ã¿ã¦ã€Œã‚ã‚‹ç¨‹åº¦è‡ªä¿¡ã‚’æŒã£ã¦ç†è§£ã§ããŸã¨è¨€ãˆã‚‹ã€çŠ¶æ…‹ã«åˆ°é”ã—ãŸã®ã§ã€ãã®æ„Ÿæƒ³ã¨ã¾ã¨ã‚ã®å¦ç¿’ãƒãƒ¼ãƒ‰ãƒžãƒƒãƒ—ã¨ãã®ä¸ã§ã©ã®ã‚ˆã†ãªçŸ¥è˜ãŒå¿…è¦ã«ãªã‚‹ã‹ã‚’ç´¹ä»‹ã—ãŸã„ã¨æ€ã„ã¾ã™ã€‚ ã‚ã‚‹ã„ã¯ã€è‡ªåˆ†ãŒå®Ÿéš›ã«å¦ç¿’ã—ã¦ããŸé“ç‹ã«åŸºã¥ã„ã¦ã„ã‚‹ã®ã§ã‚·ãƒ§ãƒ¼ãƒˆã‚«ãƒƒãƒˆã¨ã—ã¦å‚è€ƒã«ã—ã¦ã‚‚ã‚‰ã£ãŸã‚Šã€ä½¿ãˆã‚‹ãƒªã‚½ãƒ¼ã‚¹ãªã©ã®æƒ…å ±ãŒå…±æœ‰ã§ãã‚‹ã¨æ€ã„ã¾ã™ã€‚ã‚‚ã—ãã¯ã€ŒJavaScript åˆå¿ƒè€…ãŒéžåŒæœŸå‡¦ç†ã‚’ç†è§£ã§ãã‚‹ã‚ˆã†ã«ãªã‚‹ã¾ã§ã®é“ç‹ã€ã¨ã„ã†ã‚¹ãƒˆãƒ¼ãƒªãƒ¼ã§ï¼‘ã¤ã®ã‚µãƒ³ãƒ—ãƒ«ã¨ã—ã¦è¦‹ã¦ã„ãŸã ã‘ã‚‹ã¨ã„ã„ã‹ã‚‚ã—ã‚Œã¾ã›ã‚“ã€‚ ChangeLog å¤§ããªå¤‰æ›´ã®ã¿ã‚’ãƒˆãƒ©ãƒƒã‚ãƒ³ã‚°ã—ã¦ã„ã¾ã™ã€‚ 2022-11-16 æœ¬ã®å†…å®¹ã‚’åæ˜ ã•ã›ãŸè¿½è¨˜ãƒ»ä¿®æ£ã‚’è¿½åŠ 2022-05-21 æ§‹æˆã‚’ä¿®æ£ ã€ŒV8 ã‚¨ãƒ³ã‚¸ãƒ³ã‹ã‚‰è€ƒãˆã‚‹ã€ã®é …ç›®ã‚’è¿½åŠ 2022-04-30 ã€Œã‚¤ãƒ™ãƒ³ãƒˆãƒ«ãƒ¼ãƒ—ã®å…±é€šæ€§è³ªã€ã®é …ç›®ã‚’è¿½åŠ ã€Œãƒãƒ¼ãƒ‰ãƒžãƒƒãƒ—
efcl 2022/04/18
JavaScriptã®Promisesã¨PromiseJobs/Microtasks/Event Loopã®ã‚ãƒ¥ãƒ¼ã«ã¤ã„ã¦

JavaScript

Promises

article
ãƒªãƒ³ã‚¯
Introduce AbortSignal.timeout() by domenic Â· Pull Request #1032 Â· whatwg/dom
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efcl 2022/01/29
`AbortSignal.timeout()`ã®è¿½åŠ ã€‚ `Promise.all`ã¨åŒã˜ã‚ˆã†ãª`AbortSignal.all`è¦‹ãŸã„ã®ã‚‚è¿½åŠ ã—ã¦ã„ãã®ã‹

JavaScript

proposal

Promises
ãƒªãƒ³ã‚¯
Understanding JavaScript Promises
efcl 2022/01/14
Promisesã«ã¤ã„ã¦ã®æ›¸ç±

Promises

book

JavaScript
ãƒªãƒ³ã‚¯
Promise.prototype.finally should use onFinally's realm for newly creating functions Â· Issue #2222 Â· tc39/ecma262
efcl 2022/01/05
Promise.prototype.finallyã¯Realmã‚’å—ã‘ç¶™ãŒãªã„ãŸã‚ã€thenãªã©ã¨ã¯æŒ™å‹•ãŒç•°ãªã‚‹ã‚±ãƒ¼ã‚¹ãŒã‚ã‚‹ã€‚ finallyã¯ã€iframeãªã©ã®åˆ¥Realmã§ä½œã£ãŸã‚‚ã®ã¯iframeã‚’é–‰ã˜ãŸã‚ã¨å®Ÿè¡Œã•ã‚Œã‚‹ãŒã€thenãªã©ã¯resolveã•ã‚Œãªã„ãŸã‚å®Ÿè¡Œã•ã‚Œãªã„

ECMAScript

Promises

issue
ãƒªãƒ³ã‚¯
'return await promise' vs 'return promise' in JavaScript
Is there any difference between using 'return await promise' and 'return promise' in asynchronous JavaScript functions?
efcl 2021/08/23
`return await promise`ã¨`return promise`ã§å‹•ä½œãŒç•°ãªã‚‹ã‚±ãƒ¼ã‚¹ã«ã¤ã„ã¦ã€‚ `try...catch`ã§å›²ã¾ã‚Œã¦ã„ã‚‹å ´åˆã«ã¯ã€`await`ã«ã‚ˆã£ã¦throwã•ã‚Œã‚‹ã¨çµæžœãŒç•°ãªã‚‹

Promises

JavaScript

article
ãƒªãƒ³ã‚¯
GitHub - niksy/promise-any-ponyfill: `Promise.any` ponyfill.
efcl 2021/07/04
`Promise.any`ã®polyfillãƒ©ã‚¤ãƒ–ãƒ©ãƒª

JavaScript

Promises

polyfill
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éžåŒæœŸã¨ä¸¦åˆ—Â / morritaÂ - Message Passing
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efcl 2021/05/07
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Promises
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Creating an already aborted AbortController Â· Issue #959 Â· whatwg/dom
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efcl 2021/03/16
AbortControllerã§æœ€åˆã‹ã‚‰abortæ¸ˆã¿ã®Signalã‚’ä½œã‚‹ã‚ªãƒ—ã‚·ãƒ§ãƒ³ã€‚ `AbortSignal.abort()` ã¨ã—ã¦å®Ÿè£…ã•ã‚Œã‚‹

JavaScript

Promises
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