JavaScript Development (Lean)

When to use

• .js, .mjs, .cjs, package.json
• Node/Bun/Deno runtime work
• API handlers, async flows, test/lint setup

Defaults

• Prefer Bun for install/run/test where compatible.
• Prefer async/await over nested promise chains.
• Keep modules explicit (ESM preferred unless project is CJS).
• Add input validation at API boundaries.

Quick workflow