is-npm

Check if your code is running as an npm or yarn script

Install

npm install is-npm

Usage

import {isNpmOrYarn, isNpm, isYarn} from 'is-npm';

console.table({isNpmOrYarn, isNpm, isYarn});

$ node foo.js
# ┌─────────────┬────────┐
# │   (index)   │ Values │
# ├─────────────┼────────┤
# │ isNpmOrYarn │ false  │
# │    isNpm    │ false  │
# │   isYarn    │ false  │
# └─────────────┴────────┘
$ npm run foo
# ┌─────────────┬────────┐
# │   (index)   │ Values │
# ├─────────────┼────────┤
# │ isNpmOrYarn │  true  │
# │    isNpm    │  true  │
# │   isYarn    │ false  │
# └─────────────┴────────┘
$ yarn run foo
# ┌─────────────┬────────┐
# │   (index)   │ Values │
# ├─────────────┼────────┤
# │ isNpmOrYarn │  true  │
# │    isNpm    │ false  │
# │   isYarn    │  true  │
# └─────────────┴────────┘

is-npm-cli - CLI for this module

Get professional support for this package with a Tidelift subscription
_{Tidelift helps make open source sustainable for maintainers while giving companies
assurances about security, maintenance, and licensing for their dependencies.}