Stopping the Full Page Reload: Understanding Vite's ESM-Based HMR
Stop waiting for full page reloads. Learn how Vite uses native ES Modules to decouple the module graph and enable lightning-fast Hot Module Replacement.
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viteBuilding Dual ESM and CJS Bundles with Rollup's Multi‑Output
Learn how Rollup's multi‑output lets you build ES module and CommonJS bundles from a single input, with a worked example, trade‑offs, and verification steps.
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Learn how to diagnose and fix 'Circular dependency' warnings in Rollup.js using the Extraction Pattern and Deferred Execution to prevent runtime undefined imports.
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Vite eliminates slow dev server starts by leveraging native browser ES Modules. Learn how it separates dependencies from source code to maintain instant boot times.
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Architecting Fast Updates: Understanding Vite's HMR Design
Explore the architecture of Vite's Hot Module Replacement (HMR), focusing on how it leverages native ES Modules to eliminate bundling bottlenecks during development.
Node.js CommonJS require() and ESM Top-Level Await Interoperability
Synchronous Loading of ES Modules Recent Node.js releases (v22.12.0+ and v23+) have enabled the ability to use require() to load ECMAScript Modules (ESM) without requiring the --experimental-require-module flag. This allows CommonJS consumers to load ESM files synchronously, provided the module graph is compatible. The Async Module Boundary A critical constr
javascriptBun's --hot Reloader and the ESM Module Registry: Which Imports Get Invalidated?
Bun exposes two overlapping mechanisms for loading application code: its transpiling module loader, which caches compiled output so repeat imports are faster, and its watch/hot reload modes ( bun --watch , bun --hot ), which re-execute or patch modules when files on disk change. The boundary between these two mechanisms is not fully specified. In Bun 1.x, ho
Vite HMR triggering full page reloads during module invalidation
Vite uses native ES modules and a WebSocket-based runtime to handle Hot Module Replacement (HMR). While the import.meta.hot API allows modules to define custom update logic, the system is designed to bubble updates up to the nearest HMR boundary. There is uncertainty regarding the exact conditions that force the dev server to abandon a partial update in favo