Module System

Definitions

1. The language-level mechanism for organizing code into self-contained units with explicit imports and exports — examples include ES Modules (import/export), CommonJS (require/module.exports), Python packages, and Rust crates — providing encapsulation, namespace isolation, and dependency management.

   In plain English: The rules a programming language provides for splitting code into separate files and controlling what each file shares with others.

   Example: "We're migrating from CommonJS to the ES module system so we can take advantage of static analysis and tree-shaking."

Related Terms

• Callback Hell
• Transpiler
• Deno
• Bun
• JavaScript Module
• Module Bundler
• Pnpm
• Polyfill
• Require
• Strict Mode
• Top-Level Await
• Type Coercion