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'use strict'; const common = require('../common.js'); const EventEmitter = require('events').EventEmitter; const bench = common.createBenchmark(main, { n: [2e6], argc: [0, 2, 4, 10], listeners: [1, 5, 10], }); function main({ n, argc, listeners }) { const ee = new EventEmitter(); ee.setMaxListeners(listeners + 1); for (let k = 0; k < listeners; k += 1) ee.on('dummy', () => {}); switch (argc) { case 2: bench.start(); for (let i = 0; i < n; i += 1) { ee.emit('dummy', true, 5); } bench.end(n); break; case 4: bench.start(); for (let i = 0; i < n; i += 1) { ee.emit('dummy', true, 5, 10, false); } bench.end(n); break; case 10: bench.start(); for (let i = 0; i < n; i += 1) { ee.emit('dummy', true, 5, 10, false, 5, 'string', true, false, 11, 20); } bench.end(n); break; default: bench.start(); for (let i = 0; i < n; i += 1) { ee.emit('dummy'); } bench.end(n); break; } }