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node/benchmark/buffers/buffer-write-string.js at main · fetchapi/node · GitHub

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'use strict';

const common = require('../common.js');

const bench = common.createBenchmark(main, {

encoding: [

'', 'utf8', 'ascii', 'hex', 'utf16le', 'latin1',

],

args: [ '', 'offset', 'offset+length' ],

len: [2048],

n: [1e6],

});

function main({ len, n, encoding, args }) {

let string;

let start = 0;

const buf = Buffer.allocUnsafe(len);

switch (args) {

case 'offset':

string = 'a'.repeat(Math.floor(len / 2));

start = len - string.length;

if (encoding) {

bench.start();

for (let i = 0; i < n; ++i) {

buf.write(string, start, encoding);

}

bench.end(n);

} else {

bench.start();

for (let i = 0; i < n; ++i) {

buf.write(string, start);

}

bench.end(n);

}

break;

case 'offset+length':

string = 'a'.repeat(len);

if (encoding) {

bench.start();

for (let i = 0; i < n; ++i) {

buf.write(string, 0, buf.length, encoding);

}

bench.end(n);

} else {

bench.start();

for (let i = 0; i < n; ++i) {

buf.write(string, 0, buf.length);

}

bench.end(n);

}

break;

default:

string = 'a'.repeat(len);

if (encoding) {

bench.start();

for (let i = 0; i < n; ++i) {

buf.write(string, encoding);

}

bench.end(n);

} else {

bench.start();

for (let i = 0; i < n; ++i) {

buf.write(string);

}

bench.end(n);

}

}

}

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