# 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.

- Skill: `agentskillexchange/apply-repeatable-javascript-and-typescript-codemods-across-l` (Agent Skill)
- Install (CLI): `npx skillmds@latest add agentskillexchange/apply-repeatable-javascript-and-typescript-codemods-across-l`
- Raw SKILL.md: https://api.skillmd.com/api/skills/agentskillexchange/apply-repeatable-javascript-and-typescript-codemods-across-l/raw
- Safety review: pending (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: AI & ML
- Author: agentskillexchange (https://skillmd.com/u/agentskillexchange)
- Updated: 2026-09-08
- Page: https://skillmd.com/skills/agentskillexchange/apply-repeatable-javascript-and-typescript-codemods-across-l

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# 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](https://www.npmjs.com/package/jscodeshift):
- 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](https://agentskillexchange.com/skills/apply-repeatable-javascript-and-typescript-codemods-across-large-codebases-with-jscodeshift/)