Node.js Core Libraries for Browser Environments

node-libs-browser is a utility package providing browser-compatible polyfills and mock implementations for a subset of Node.js core modules. Its primary purpose is to enable bundlers like Webpack to resolve `require('fs')` or `require('buffer')` in browser environments, substituting Node.js-specific APIs with browser-friendly alternatives. The current stable version is 2.2.1. This library is officially deprecated, meaning it will not accept new features or breaking changes; only bugfixes. Its release cadence is effectively stalled, with the last major update several years ago. While historically critical for enabling Node.js code in the browser, modern development often favors more granular polyfills, conditional imports, or alternatives like `node-stdlib-browser` that are actively maintained and offer newer implementations and ESM support, addressing issues like `punycode` deprecation in newer Node.js versions.