--- title: The await event horizon in JavaScript | daily.dev description: The article discusses the concept of the await event horizon in JavaScript, which is a boundary similar to the event horizon of a black hole. It explains how... canonical: https://daily.dev/posts/the-await-event-horizon-in-javascript-l1xcafmz1 twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: The await event horizon in JavaScript | daily.dev og:description: The article discusses the concept of the await event horizon in JavaScript, which is a boundary similar to the event horizon of a black hole. It explains how... og:url: https://daily.dev/posts/the-await-event-horizon-in-javascript-l1xcafmz1 og:image: https://api.daily.dev/og/posts/L1xcAfmZ1.png og:image:alt: The await event horizon in JavaScript og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # The await event horizon in JavaScript **[Community Picks](https://daily.dev/sources/community)** · 7 min read · 25 upvotes · 0 comments ## Summary The article discusses the concept of the await event horizon in JavaScript, which is a boundary similar to the event horizon of a black hole. It explains how async functions traverse this horizon when awaiting promises, and the potential issues that can arise. It also explores explicit resource management and the use of AbortSignals as potential solutions. The article concludes by discussing the concept of structured concurrency and how it can be achieved using generator functions. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: --- Tags: [#javascript](https://daily.dev/tags/javascript) [View this post on daily.dev](https://daily.dev/posts/the-await-event-horizon-in-javascript-l1xcafmz1) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"The await event horizon in JavaScript","url":"https://daily.dev/posts/the-await-event-horizon-in-javascript-l1xcafmz1","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/the-await-event-horizon-in-javascript-l1xcafmz1"},"datePublished":"2023-12-15T10:29:23.850Z","dateModified":"2023-12-15T10:29:22.666Z","description":"The article discusses the concept of the await event horizon in JavaScript, which is a boundary similar to the event horizon of a black hole. It explains how...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/1b457325cf29cd727dd44347cb4092e4?_a=AQAEufR","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/1b457325cf29cd727dd44347cb4092e4?_a=AQAEufR","isAccessibleForFree":true,"articleSection":"Community Picks","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"Community Picks","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1655817725/logos/community","url":"https://daily.dev/sources/community"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/the-await-event-horizon-in-javascript-l1xcafmz1","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":25},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"javascript","timeRequired":"PT7M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Community Picks","item":"https://daily.dev/sources/community"},{"@type":"ListItem","position":3,"name":"The await event horizon in JavaScript"}]} ```