git:20260710.2925510 to git:20260710.62afd0f
20 added, 15 removed. Audit B to A.
---
- title: "Apply repeatable JavaScript and TypeScript codemods across large codebases with jscodeshift"
+ name: "Apply repeatable JavaScript and TypeScript codemods across large codebases with jscodeshift"
+ slug: "apply-repeatable-javascript-and-typescript-codemods-across-large-codebases-with-jscodeshift"
description: "Use jscodeshift when an agent needs AST-based JavaScript or TypeScript codemods for bulk migrations, API rewrites, and large refactors with reviewable diffs."
+ github_stars: 9983
verification: "security_reviewed"
source: "https://github.com/facebook/jscodeshift"
author: "Meta"
publisher_type: "organization"
- category:
- - "Code Quality & Review"
- framework:
- - "Multi-Framework"
+ category: "Code Quality & Review"
+ framework: "Multi-Framework"
tool_ecosystem:
github_repo: "facebook/jscodeshift"
github_stars: 9983
npm_package: "jscodeshift"
npm_weekly_downloads: 27093990
---
# 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
- Choose whichever fits your setup:
+ 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
- 1. Copy this skill folder into your local skills directory.
- 2. Clone the repo and symlink or copy the skill into your agent workspace.
- 3. Add the repo as a git submodule if you manage shared skills centrally.
- 4. Install it through your internal provisioning or packaging workflow.
- 5. Download the folder directly from GitHub and place it in your skills collection.
+ 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
- Install command or upstream instructions:
+ 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
- ```
- Install with npm install -g jscodeshift or run it with npx, then provide a transform file and target paths, for example jscodeshift -t ./transform.js src/.
- ```
+ - 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/)