Tests if a package is available to be imported. Useful for checking if optional dependencies are installed.
Unlike other packages that test whether a package is available by importing it,
this package checks the file system for the corresponding package.json file.
This avoids any package code from running during the check.
npm install @cityssm/has-packageimport hasPackage from '@cityssm/has-package'
/*
* Test for an existing package
*/
let packageExists = await hasPackage('eslint')
console.log(packageExists)
// => true
/*
* Test for an nonexisting package
*/
packageExists = await hasPackage('@cityssm/non-existing-package')
console.log(packageExists)
// => false