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'use strict'; const common = require('../common.js'); const bench = common.createBenchmark(main, { n: [1000] }); const spawn = require('child_process').spawn; function main({ n }) { bench.start(); go(n, n); } function go(n, left) { if (--left === 0) return bench.end(n); const child = spawn('echo', ['hello']); child.on('exit', (code) => { if (code) process.exit(code); else go(n, left); }); }