Google Closure Compiler vs Vite

Google Closure Compiler optimizes JavaScript by analyzing code, removing dead code, and rewriting and minimizing what remains. It can also check syntax, references, and types, and warn about illegal JavaScript, risky operations, and common pitfalls. Google says smaller output files can help applications load faster and reduce bandwidth needs. Compilation options include WHITESPACE_ONLY, SIMPLE, and ADVANCED; the repository README also lists BUNDLE. ADVANCED applies aggressive transformations and symbol renaming to improve compression, so preserving program behavior requires care. The project is available as a command-line Java application, a library used through Bazel, and an NPM package. Released JARs are distributed through Maven. The repository documents Maven, NPM, Bazel, command-line Java, and a NodeJS API. Building the compiler requires Java 21 or later, NodeJS, Git, and Bazelisk. Its input restrictions include use of goog.module() and goog.require(), and ES6 import/export support is not actively maintained. The NPM packages are built and distributed by an open source contributor, not Google. The compiler is free.

Vite is a free build tool for modern web projects. Its development server serves source files on demand using native ES modules and supports Hot Module Replacement. For production, the `vite build` command bundles application assets for static hosting. Vite supports TypeScript, JSX, CSS, web workers, and WebAssembly; plugins can extend the tool, including its development server and SSR functionality. Its plugin interface builds on Rollup's. Documented framework integrations include Vue, React, Preact, Svelte, Solid, Qwik, Nuxt, SvelteKit, Astro, and React Router. Developers can try Vite in a browser through StackBlitz using supported framework templates. It runs on Linux, macOS, Windows, and the web, and is MIT licensed and free and open source. Vite requires Node.js 20.19+ or 22.12+, though some templates may need a higher version. It transpiles TypeScript but does not type-check it; type checking needs to be handled separately. Legacy browser support can be added with the official `@vitejs/plugin-legacy`.