keii.dev
+16
-11
pages/en/index.mdx
+16
-11
pages/en/index.mdx
···
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<section>
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<div>
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```js displayName="Create an HTTP Server"
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// make a file `server.mjs` and run with `node server.mjs`
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import { createServer } from 'node:http';
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const server = createServer((req, res) => {
···
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```
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```js displayName="Write Tests"
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// make a file `tests.mjs` and run with `node tests.mjs`
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import assert from 'node:assert';
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import test from 'node:test';
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···
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```
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```js displayName="Read and Hash a File"
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// make a file `crypto.mjs` and run with `node crypto.mjs`
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import { createHash } from 'node:crypto';
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import { readFile } from 'node:fs/promises';
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const hasher = createHash('sha1');
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const fileContent = await readFile('./package.json');
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hasher.setEncoding('hex');
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hasher.write(fileContent);
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// ensure you have a `package.json` file for this test!
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hasher.write(await readFile('package.json'));
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hasher.end();
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const fileHash = hasher.read();
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```
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```js displayName="Read Streams"
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// make a file `streams.mjs` and run with `node streams.mjs`
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import { pipeline } from 'node:stream';
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import { createReadStream, createWriteStream } from 'node:fs';
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import { createGzip } from 'node:zlib';
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import { promisify } from 'node:util';
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-
const res = await fetch('https://nodejs.org/dist/index.json');
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const json = await res.json(); // yields a json object
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-
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const readableStream = createReadStream('./package.json');
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const writableStream = createWriteStream('./package2.json');
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-
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readableStream.setEncoding('utf8');
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-
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readableStream.on('data', chunk => writableStream.write(chunk));
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await promisify(pipeline)
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( // ensure you have a `package.json` file for this test!
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createReadStream('package.json'),
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+
createGzip(),
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createWriteStream('package.json')
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);
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```
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```js displayName="Work with Threads"
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// make a file `threads.mjs` and run with `node threads.mjs`
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import { Worker, isMainThread,
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workerData, parentPort } from 'node:worker_threads';
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