pmc - Package Manager Converter

Convert package manager commands between npm, yarn, pnpm, and bun.

Installation

bun install -g pkg-convert
npm install pkg-convert
pnpm add pkg-convert
yarn add pkg-convert

Usage

Convert a command

# Convert to bun
pmc bun "npm install lodash -D"

# Convert to pnpm
pmc pnpm "yarn add react react-dom"

# Convert to yarn
pmc yarn "pnpm add -g typescript"

# Convert to npm
pmc npm "bun add [email protected]"

Auto-detect source (no command = install)

pmc bun     # Output: bun install
pmc yarn    # Output: yarn install
pmc pnpm    # Output: pnpm install

Supported Commands

| Action | npm | yarn | pnpm | bun | |--------|-----|------|------|-----| | Install all | npm install | yarn install | pnpm install | bun install | | Add package | npm i pkg | yarn add pkg | pnpm add pkg | bun add pkg | | Add dev | npm i pkg -D | yarn add pkg -D | pnpm add pkg -D | bun add pkg -D | | Remove | npm uninstall pkg | yarn remove pkg | pnpm remove pkg | bun remove pkg | | Update | npm update | yarn upgrade | pnpm update | bun update | | Run script | npm run build | yarn run build | pnpm run build | bun run build | | Run binary | npx pkg | yarn dlx pkg | pnpm dlx pkg | bunx pkg | | Global add | npm i -g pkg | yarn global add pkg | pnpm add -g pkg | bun add -g pkg | | CI install | npm ci | yarn install --frozen-lockfile | pnpm install --frozen-lockfile | bun install --frozen-lockfile |

Flags

| Flag | npm | yarn | pnpm | bun | |------|-----|------|------|-----| | Dev dependency | -D | -D | -D | -D | | Optional | -O | --optional | -O | --optional | | Exact version | -E | --exact | -E | --exact | | Global | -g | global prefix | -g | -g | | Peer dependency | --save-peer | --peer | --save-peer | not supported |

API Usage

import { convert, parseCommand, convertCommand } from 'pmc';

// Convert a command string
const result = convert('npm install lodash -D', 'bun');
console.log(result.command); // "bun add lodash -D"

// Parse a command
const parsed = parseCommand('yarn add react react-dom -D');
console.log(parsed.packages); // ['react', 'react-dom']
console.log(parsed.isDev);    // true

// Convert parsed command
const result2 = convertCommand(parsed, 'pnpm');
console.log(result2.command); // "pnpm add react react-dom -D"

Lockfile Detection

The CLI auto-detects the current package manager by checking for lockfiles in this priority order:

1. pnpm-lock.yaml → pnpm
2. yarn.lock → yarn
3. bun.lock / bun.lockb → bun
4. package-lock.json → npm

Limitations

• --save-peer is not supported in bun
• audit and outdated commands fall back to npm equivalents for bun
• Some Yarn Berry-specific commands may not convert correctly

License

MIT