Apply repeatable JavaScript and TypeScript codemods across large codebases with jscodeshift

Use jscodeshift when an agent needs AST-based JavaScript or TypeScript codemods for bulk migrations, API rewrites, and large refactors with reviewable diffs.

Prerequisites

Node.js, npm or pnpm, Git

Installation

Use the upstream install or setup path that matches your environment:

• $ npm install -g jscodeshift
• make the transform more readable.
• To update docs in /docs, use npm run docs.
• To view these docs locally, use npx http-server ./docs

Requirements and caveats from upstream:

• const {run: jscodeshift} = require('jscodeshift/src/Runner')
• const path = require('node:path');
• An AST node is a plain JavaScript object with a specific set of fields, in

Basic usage or getting-started notes:

• Get jscodeshift from npm:

• This will install the runner as jscodeshift.

• VSCode Debugger

• Source: https://github.com/facebook/jscodeshift

• Extracted from upstream docs: https://raw.githubusercontent.com/facebook/jscodeshift/HEAD/README.md

Documentation

• https://jscodeshift.com

Source

• Agent Skill Exchange