This article explains how Vite achieves fast development by serving ES modules directly, using a connect‑based dev server with plugin‑driven transforms, pre‑bundling dependencies via esbuild, generating hash‑based cache keys, and reusing the same plugins in Rollup for production builds.
Vite accelerates development by serving unbundled ES modules directly to the browser, using a connect‑based dev server that compiles on‑demand, leverages esbuild for fast pre‑bundling of dependencies, generates hash‑based cache queries, and shares plugins with Rollup for consistent production builds.
This article explains why Vite is faster than bundlers like Webpack, introduces the concept of dependency pre‑bundling, walks through its implementation using esbuild plugins, and shows how to build a simplified custom Vite server that scans, resolves, and pre‑bundles third‑party modules.
This article explores Vite’s evolution and core architecture, detailing how it improves development server startup time, performs dependency pre‑bundling with esbuild, creates the dev server, handles HTML injection, and implements fast hot‑module replacement through WebSocket communication.
Vite improves dev‑server startup and runtime speed by scanning every project HTML file (excluding node_modules) with an esbuild plugin that traverses the module graph, classifies JavaScript, assets, bare imports and framework files, creates virtual modules, and records each bare import’s actual path for pre‑bundling.
