React Lazy Hydration is a library designed to optimize the initial load performance of Server-Rendered React applications by deferring the hydration of components until they are actually needed. This package, currently at version 0.1.0, offers several strategies for lazy hydration, including hydrating only on the server (`ssrOnly`), when a component becomes visible in the viewport (`whenVisible`), when the browser is idle (`whenIdle`), or upon specific user events like clicks or mouse enters (`on` event). It aims to reduce the JavaScript payload executed during initial page load, improving Time To Interactive (TTI). The library is inspired by discussions within the React community regarding selective hydration and similar patterns seen in Vue SSR. Its release cadence is currently irregular as it's in its early development stages. A key differentiator is its flexible approach, allowing developers to choose the most suitable hydration strategy on a per-component basis, rather than a global setting. It depends on React version 16.8.0 or greater for its hooks-based implementation.
npm install react-lazy-hydrationVerified import paths — ran on the pinned version, not inferred.
This example demonstrates various lazy hydration strategies: `ssrOnly` for server-only rendering, `whenVisible` for viewport-based hydration (with custom IntersectionObserver options), `whenIdle` for hydration during browser idle time, and `on` for event-triggered hydration.
Install and import a polyfill like `intersection-observer` (e.g., `import 'intersection-observer';`).
Install and import a polyfill for `requestIdleCallback` (e.g., `import 'requestidlecallback';`).
Consider optimizing component structure or using a different hydration strategy for large lists of identical components. Monitor performance in such scenarios.
Add a polyfill for IntersectionObserver, such as `import 'intersection-observer';` at the entry point of your application.
Add a polyfill for requestIdleCallback, such as `import 'requestidlecallback';` at the entry point of your application.
Ensure `react` is installed as a peer dependency (`npm install react@^16.8.0` or higher) and check for duplicate React installations using `npm ls react` or `yarn why react`.