1// run an npm command 2const spawn = require('@npmcli/promise-spawn') 3 4module.exports = (npmBin, npmCommand, cwd, env, extra) => { 5 const isJS = npmBin.endsWith('.js') 6 const cmd = isJS ? process.execPath : npmBin 7 const args = (isJS ? [npmBin] : []).concat(npmCommand) 8 // when installing to run the `prepare` script for a git dep, we need 9 // to ensure that we don't run into a cycle of checking out packages 10 // in temp directories. this lets us link previously-seen repos that 11 // are also being prepared. 12 13 return spawn(cmd, args, { cwd, env }, extra) 14} 15