has-yarn
Advanced tools
Package description
The has-yarn npm package is a simple utility that checks if a project is using Yarn as its package manager by looking for a 'yarn.lock' file in the project directory. It is useful for tooling and scripts that need to adapt their behavior based on the package manager being used.
Check if Yarn is being used
This feature allows you to check if a project is using Yarn by invoking the hasYarn function. It returns true if a 'yarn.lock' file is found in the project directory, indicating that Yarn is being used.
const hasYarn = require('has-yarn');
if (hasYarn()) {
console.log('The project uses Yarn.');
} else {
console.log('The project does not use Yarn.');
}Similar to has-yarn, has-npm checks if a project is using npm as its package manager by looking for a 'package-lock.json' file. It serves a similar purpose but for npm instead of Yarn.
This package provides functionality similar to has-yarn by checking for the presence of a 'yarn.lock' file to determine if Yarn is being used. It may offer different APIs or additional options compared to has-yarn.
yarn-or-npm is a more versatile package that can detect whether Yarn or npm is being used in a project. It can return 'yarn' or 'npm' based on the lock file detected, providing a direct comparison to the singular focus of has-yarn.
Readme
Check if a project is using Yarn
Useful for tools that needs to know whether to use yarn or npm to install dependencies.
It checks if a yarn.lock file is present in the working directory.
$ npm install has-yarn
.
├── foo
│ └── package.json
└── bar
├── package.json
└── yarn.lock
import hasYarn from 'has-yarn';
hasYarn('foo');
//=> false
hasYarn('bar');
//=> true
Returns a boolean of whether the project uses Yarn.
Type: string
Default: process.cwd()
The current working directory.
FAQs
Check if a project is using Yarn
The npm package has-yarn receives a total of 3,914,972 weekly downloads. As such, has-yarn popularity was classified as popular.
We found that has-yarn demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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