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'use strict';
const common = require('../common.js');
const zlib = require('zlib');
const bench = common.createBenchmark(main, {
method: ['createDeflate', 'deflate', 'deflateSync'],
inputLen: [1024],
n: [4e5]
});
function main({ n, method, inputLen }) {
const chunk = Buffer.alloc(inputLen, 'a');
var i = 0;
switch (method) {
// Performs `n` writes for a single deflate stream
case 'createDeflate':
var deflater = zlib.createDeflate();
deflater.resume();
deflater.on('finish', () => {
bench.end(n);
});
bench.start();
(function next() {
if (i++ === n)
return deflater.end();
deflater.write(chunk, next);
})();
break;
// Performs `n` single deflate operations
case 'deflate':
var deflate = zlib.deflate;
bench.start();
(function next(err, result) {
if (i++ === n)
return bench.end(n);
deflate(chunk, next);
})();
break;
// Performs `n` single deflateSync operations
case 'deflateSync':
var deflateSync = zlib.deflateSync;
bench.start();
for (; i < n; ++i)
deflateSync(chunk);
bench.end(n);
break;
default:
throw new Error('Unsupported deflate method');
}
}