// 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, stdioString: true, env }, extra) }