// run an npm command
const spawn = require('@npmcli/promise-spawn')
module.exports = (npmBin, npmCommand, cwd, env, extra) => {
const isJS = npmBin.endsWith('.js')
const cmd = isJS ? process.execPath : npmBin
const args = (isJS ? [npmBin] : []).concat(npmCommand)
// when installing to run the `prepare` script for a git dep, we need
// to ensure that we don't run into a cycle of checking out packages
// in temp directories. this lets us link previously-seen repos that
// are also being prepared.
return spawn(cmd, args, { cwd, env }, extra)
}
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