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'use strict';
const common = require('../common.js');
const {
ReadableStream,
WritableStream,
} = require('node:stream/web');
const bench = common.createBenchmark(main, {
n: [5e6],
highWaterMarkR: [512, 1024, 2048, 4096],
highWaterMarkW: [512, 1024, 2048, 4096],
});
async function main({ n, highWaterMarkR, highWaterMarkW }) {
const b = Buffer.alloc(1024);
let i = 0;
const rs = new ReadableStream({
highWaterMark: highWaterMarkR,
pull: function(controller) {
if (i++ === n) {
controller.enqueue(b);
} else {
controller.close();
}
},
});
const ws = new WritableStream({
highWaterMark: highWaterMarkW,
write(chunk, controller) {},
close() { bench.end(n); },
});
bench.start();
rs.pipeTo(ws);
}
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