--- title: ReactFire 0.5.0 | daily.dev description: ReactFire 0.5.0 is announced as the biggest update since the library's initial 2014 release, bringing improved performance for bindAsArray() and bindAsObject()... canonical: https://daily.dev/posts/reactfire-0-5-0-s3duk4ngf twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: ReactFire 0.5.0 | daily.dev og:description: ReactFire 0.5.0 is announced as the biggest update since the library's initial 2014 release, bringing improved performance for bindAsArray() and bindAsObject()... og:url: https://daily.dev/posts/reactfire-0-5-0-s3duk4ngf og:image: https://api.daily.dev/og/posts/S3DUK4ngF.png og:image:alt: ReactFire 0.5.0 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. # ReactFire 0.5.0 **[Firebase](https://daily.dev/sources/firebase-blog)** · 5 min read · 0 upvotes · 0 comments ## Summary ReactFire 0.5.0 is announced as the biggest update since the library's initial 2014 release, bringing improved performance for bindAsArray() and bindAsObject() (especially on large datasets), full support for complex Firebase queries, and a new .key attribute added to every bound record so keys can be retrieved and used to write data back to Firebase. Primitive values (strings, numbers, booleans) bound via bindAsObject() or bindAsArray() are now wrapped in an object with .key and .value properties instead of being bound directly as the raw value, a change that affects existing code relying on the old primitive binding behavior. The post also discusses future plans to keep ReactFire evolving alongside React, ES6+, Relay, and GraphQL. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### What changed in ReactFire 0.5.0 for binding primitive values like strings or numbers? As of ReactFire 0.5.0, primitive values (strings, numbers, booleans) bound via bindAsObject() or bindAsArray() are no longer returned directly as the raw value. Instead they are wrapped in an object with a .key property (the Firebase key) and a .value property (the actual primitive value), replacing the prior behavior where the raw value was bound as-is. _Track breaking changes like this before upgrading a Firebase-backed React app on daily.dev._ ### Does ReactFire 0.5.0 expose the Firebase key for bound array or object items? Yes, ReactFire 0.5.0 adds a .key attribute to every record created by bindAsArray() and bindAsObject(), something previous versions did not support. This makes it possible to write data back to Firebase to update, remove, or move a specific record, since the key name is now directly accessible on each bound item. _daily.dev helps developers keep up with library updates like this key attribute addition._ ### Did ReactFire 0.5.0 improve performance for bindAsArray with large Firebase datasets? Yes, ReactFire 0.5.0 rewrote the bindAsArray() implementation to improve performance, especially on large data sets, and to properly support complex Firebase queries, which the original simplistic implementation handled poorly. No code changes are required to benefit from these improvements. _Developers optimizing Firebase-backed React apps can follow performance-focused releases on daily.dev._ ## Similar posts on daily.dev - [React-Admin: February 2026 Update](https://daily.dev/posts/react-admin-february-2026-update-frhm2auqr) · marmelab · 66 upvotes · 2 comments - [React Status Issue 448: October 15, 2025](https://daily.dev/posts/react-status-issue-448-october-15-2025-atgaot8vx) · React Status · 3 upvotes · 0 comments - [React Native's new era](https://daily.dev/posts/react-native-s-new-era-me2hespyc) · Bytes by ui.dev · 4 upvotes · 0 comments --- Tags: [#javascript](https://daily.dev/tags/javascript), [#react](https://daily.dev/tags/react), [#firebase](https://daily.dev/tags/firebase) [View this post on daily.dev](https://daily.dev/posts/reactfire-0-5-0-s3duk4ngf) ```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":"ReactFire 0.5.0","url":"https://daily.dev/posts/reactfire-0-5-0-s3duk4ngf","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/reactfire-0-5-0-s3duk4ngf"},"datePublished":"2026-08-23T12:18:15.651Z","dateModified":"2026-08-23T12:28:20.497Z","description":"ReactFire 0.5.0 is announced as the biggest update since the library's initial 2014 release, bringing improved performance for bindAsArray() and bindAsObject()...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/7ed721de96163685d26ab7e314be3ebc?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/7ed721de96163685d26ab7e314be3ebc?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"Firebase","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":"Firebase","logo":"https://media.daily.dev/image/upload/s--i395oqZH--/f_auto,q_auto/v1787487448/logos/firebase-blog?_a=BAMAMicg0","url":"https://daily.dev/sources/firebase-blog"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/reactfire-0-5-0-s3duk4ngf","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"javascript,react,firebase","timeRequired":"PT5M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Firebase","item":"https://daily.dev/sources/firebase-blog"},{"@type":"ListItem","position":3,"name":"ReactFire 0.5.0"}]} {"@context":"https://schema.org","@type":"FAQPage","@id":"https://daily.dev/posts/reactfire-0-5-0-s3duk4ngf#faq","mainEntity":[{"@type":"Question","name":"What changed in ReactFire 0.5.0 for binding primitive values like strings or numbers?","acceptedAnswer":{"@type":"Answer","text":"As of ReactFire 0.5.0, primitive values (strings, numbers, booleans) bound via bindAsObject() or bindAsArray() are no longer returned directly as the raw value. 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