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Babel

A JavaScript compiler that allows developers to use next-generation JavaScript features today by converting them into a backward-compatible version.

Categoryweb

Overview

Babel is essential for ensuring that modern JavaScript code runs in older browsers. It takes code written in the latest ECMAScript standards (or even experimental features) and 'transpiles' it into ES5 or other older versions.

Key Features

  • Transpilation: Converts new syntax (like arrow functions) into older equivalents.
  • Polyfilling: Adds missing features (like Promise or Array.from) to older environments.
  • Plugin System: Highly customizable via a vast array of plugins and presets (e.g., @babel/preset-react).

Usage

Babel is typically integrated into build tools like Webpack or Vite to automatically process code during the build process.

Related Terms

JavaScriptECMAScriptWebpack