Check if a program is installed.
npm install is-program-installedCheck if a program is installed.
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npm i is-program-installed
``javascript``
const isInstalled = require('is-program-installed')
isInstalled('ls') // => true
isInstalled('Slack.app') // => true
isInstalled('powershell.exe') // => true
isInstalled('valid-linux-app.desktop') // => true
isInstalled('something-that-does-not-exist') // => false