nodejs/test/parallel/test-stream3-pipeline-async-iterator.js

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/* eslint-disable node-core/require-common-first, require-yield */
'use strict';
const { pipeline } = require('node:stream/promises');
{
// Ensure that async iterators can act as readable and writable streams
async function* myCustomReadable() {
yield 'Hello';
yield 'World';
}
const messages = [];
async function* myCustomWritable(stream) {
for await (const chunk of stream) {
messages.push(chunk);
}
}
(async () => {
await pipeline(
myCustomReadable,
myCustomWritable,
);
// Importing here to avoid initializing streams
require('assert').deepStrictEqual(messages, ['Hello', 'World']);
})()
.then(require('../common').mustCall());
}