Yarn-to-npm NPM

Yarn to npm

npm license downloads

A CLI tool that simplifies the migration of projects from Yarn to npm. This tool converts the yarn.lock file to package-lock.json and updates package.json scripts to use npm commands.

Features

Converts yarn.lock to package-lock.json using synp.
Updates package.json scripts to replace Yarn commands with npm equivalents.
Handles common Yarn commands like yarn add, yarn remove, yarn global, and shorthand script commands.
Supports commands that should be run directly, such as jest, eslint, prettier, tsc, and serverless.

Installation

You can install the CLI globally via npm:

npm install -g yarn-to-npm-cli

Usage

To migrate your project from Yarn to npm, navigate to the root of your project directory and run:

yarn-to-npm migrate

This command will:

Convert your yarn.lock file to a package-lock.json file.
Update all yarn commands in your package.json scripts to their npm equivalents.

Example

Before migration:

"scripts": {
"start": "yarn start && yarn build",
"build": "yarn run build && yarn add lodash",
"test": "yarn test && yarn install",
"lint": "yarn eslint .",
"dev": "yarn run dev"
}

After migration:

"scripts": {
"start": "npm run start && npm run build",
"build": "npm run build && npm install lodash",
"test": "npm run test && npm install",
"lint": "eslint .",
"dev": "npm run dev"
}