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'use strict';
const common = require('../common');
const assert = require('assert');
const fs = require('fs');
const util = require('util');
const { Writable } = require('stream');
const { Worker, isMainThread } = require('worker_threads');
class BufferingWritable extends Writable {
constructor() {
super();
this.chunks = [];
}
_write(chunk, enc, cb) {
this.chunks.push(chunk);
cb();
}
get buffer() {
return Buffer.concat(this.chunks);
}
}
if (isMainThread) {
const original = new BufferingWritable();
const passed = new BufferingWritable();
const w = new Worker(__filename, { stdin: true, stdout: true });
const source = fs.createReadStream(process.execPath);
source.pipe(w.stdin);
source.pipe(original);
w.stdout.pipe(passed);
passed.on('finish', common.mustCall(() => {
assert.strictEqual(original.buffer.compare(passed.buffer), 0,
`Original: ${util.inspect(original.buffer)}, ` +
`Actual: ${util.inspect(passed.buffer)}`);
}));
} else {
process.stdin.pipe(process.stdout);
}