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