O React tem sido nossa escolha padrão para o desenvolvimento de UIs em JavaScript desde 2016, mas com o lançamento estável do React Compiler no outubro passado (como parte do React 19), vale a pena revisitá-lo. Há uma série de razões pelas quais esse recurso é notável. Ao lidar com a memoização no momento da compilação (build time), por exemplo, ele torna o uso manual de useMemo e useCallback amplamente desnecessário, embora o time recomende mantê-los como válvulas de escape quando for exigido um controle preciso sobre as dependências de efeitos. Testado massivamente na Meta e suportado pelo Expo SDK 54, Vite e Next.js, o compilador também remove uma categoria de boilerplate de desempenho que há muito tempo é um custo de uso em escala com o React. O React 19 também introduz Actions e hooks como useActionState e useOptimistic, que simplificam a manipulação de formulários e as mutações de dados sem depender de bibliotecas externas. O lançamento da React Foundation sob a Linux Foundation em 2025 — com Amazon, Expo, Callstack, Microsoft, Software Mansion e Vercel se juntando à Meta — fortalece ainda mais a estabilidade de longo prazo da biblioteca e aborda uma preocupação que times cautelosos historicamente citavam ao considerar a adoção.
In the avalanche of front-end JavaScript frameworks, React.js stands out due to its design around a reactive data flow. Allowing only one-way data binding greatly simplifies the rendering logic and avoids many of the issues that commonly plague applications written with other frameworks. We're seeing the benefits of React.js on a growing number of projects, large and small, while at the same time we continue to be concerned about the state and the future of other popular frameworks like AngularJS. This has led to React.js becoming our default choice for JavaScript frameworks.
One benefit of the ongoing avalanche of front-end JavaScript frameworks is that occasionally a new idea crops up that makes us think. React.js is a UI/view framework in which JavaScript functions generate HTML in a reactive data flow. It differs significantly from frameworks like AngularJS in that it only allows one-way data bindings, greatly simplifying the rendering logic. We have seen several smaller projects achieve success with React.js, and developers are drawn to its clean, composable approach to componentization.
One benefit to the ongoing avalanche of front-end JavaScript frameworks is that occasionally, a new idea crops up that makes us think. React.js is a UI/View framework in which JavaScript functions generate HTML in a reactive data flow. We have seen several smaller projects achieve success with React.js and developers are drawn to its clean, composeable approach to componentization.
One benefit to the ongoing avalanche of front-end JavaScript frameworks is that occasionally, a new idea crops up that makes us think. React.js is a UI/View framework in which JavaScript functions generate HTML in a reactive data flow. Although we are wary of mixing code and markup, it results in UI components that are nicely encapsulated and composable. React.js is getting a lot of developer attention and will benefit from more tools and examples becoming available.
