got 11.8.6

Clean-room public code sample — generation instructions

Write a brand-new, minimal, self-contained code sample in this clean-room directory.
Do not copy, paraphrase, or reference any existing project source. Work only from this spec.

A csx.json manifest scaffold already exists. Do not recreate it from memory. Preserve its case.goal, packages and symbols; fill its empty case.contract with exact assertions and correct its environment, commands and verifierAdapter for the files you generate.

Goal: verify pkg:npm/got@11.8.6
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/got@11.8.6

Rules:
  - One focused purpose; the smallest project that proves the goal.
  - Include a contract test (test/contract.*) that runs OFFLINE and exits 0 exactly when the goal behavior works.
  - Pin every dependency with a lockfile so resolution is reproducible.
  - No secrets, credentials, or tokens. No real URLs (only example.com or localhost). No absolute paths.
  - No personal names, emails, company names, or project identifiers of any kind.
  - No binaries and no generated output (node_modules, dist, target, venv, .git, .env).
  - Keep it under 200 files and 256KB packed.

{"case":{"caseId":"case:sha256:e51f12b79ce0098eac9387ab62dc939dd39afa31b62d9e7e26ce97c8bf8ad3a2","contract":["got.get sends HTTP GET and automatically parses JSON response body when responseType is json","got.post sends JSON payload and receives parsed JSON response","got.extend creates an isolated client instance with configured prefixUrl and default headers","got serializes URL search parameters using the searchParams option","got throws HTTPError on 4xx and 5xx responses containing response details unless throwHttpErrors is false","got.stream returns a readable stream for streaming response body chunks"],"goal":"verify pkg:npm/got@11.8.6","kind":"HOW","packages":["pkg:npm/got@11.8.6"],"schemaVersion":1},"contractCommand":["node","test/contract.mjs"],"environment":{"arch":"x64","distro":"ubuntu","ecosystem":"npm","libc":"glibc","libcVersion":"2.39","os":"linux","osVersionBucket":"24","packageManager":"npm","schemaVersion":1},"license":"MIT-0","packages":["pkg:npm/got@11.8.6"],"schemaVersion":1,"subject":"pkg:npm/got@11.8.6","verifierAdapter":"node-typescript@1"}

import got from 'got';

/**
 * Fetch JSON from an endpoint using got.
 * @param {string|URL} url
 * @param {object} [options]
 * @returns {Promise<any>}
 */
export async function getJson(url, options = {}) {
  const response = await got.get(url, {
    responseType: 'json',
    ...options
  });
  return response.body;
}

/**
 * Post JSON data to an endpoint using got.
 * @param {string|URL} url
 * @param {object} data
 * @param {object} [options]
 * @returns {Promise<any>}
 */
export async function postJson(url, data, options = {}) {
  const response = await got.post(url, {
    json: data,
    responseType: 'json',
    ...options
  });
  return response.body;
}

/**
 * Create a configured got client instance with default prefixUrl and headers.
 * @param {string} prefixUrl
 * @param {Record<string, string>} [defaultHeaders]
 * @returns {got}
 */
export function createClient(prefixUrl, defaultHeaders = {}) {
  return got.extend({
    prefixUrl,
    headers: defaultHeaders,
    responseType: 'json'
  });
}

export { got };
export default got;

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{
  "name": "sample-got-verify",
  "version": "1.0.0",
  "private": true,
  "type": "module",
  "dependencies": {
    "got": "11.8.6"
  }
}

{
  "schemaVersion": 1,
  "goal": "verify pkg:npm/got@11.8.6",
  "kind": "HOW",
  "packages": [
    "pkg:npm/got@11.8.6"
  ]
}

import assert from 'node:assert/strict';
import http from 'node:http';
import { Readable } from 'node:stream';
import got, { getJson, postJson, createClient } from '../index.mjs';

// Setup local offline test server
const server = http.createServer(async (req, res) => {
  const url = new URL(req.url, 'http://localhost');

  if (url.pathname === '/api/hello' && req.method === 'GET') {
    res.writeHead(200, { 'Content-Type': 'application/json' });
    res.end(JSON.stringify({ message: 'hello world' }));
    return;
  }

  if (url.pathname === '/api/echo' && req.method === 'POST') {
    let body = '';
    req.on('data', (chunk) => {
      body += chunk;
    });
    req.on('end', () => {
      const parsed = JSON.parse(body);
      res.writeHead(200, { 'Content-Type': 'application/json' });
      res.end(JSON.stringify({ received: parsed }));
    });
    return;
  }

  if (url.pathname === '/api/search' && req.method === 'GET') {
    const q = url.searchParams.get('q');
    const page = url.searchParams.get('page');
    res.writeHead(200, { 'Content-Type': 'application/json' });
    res.end(JSON.stringify({ query: q, page: Number(page) }));
    return;
  }

  if (url.pathname === '/api/custom-header' && req.method === 'GET') {
    const customHeader = req.headers['x-custom-token'];
    res.writeHead(200, { 'Content-Type': 'application/json' });
    res.end(JSON.stringify({ token: customHeader }));
    return;
  }

  if (url.pathname === '/api/error-404' && req.method === 'GET') {
    res.writeHead(404, { 'Content-Type': 'application/json' });
    res.end(JSON.stringify({ error: 'not found' }));
    return;
  }

  if (url.pathname === '/api/stream-data' && req.method === 'GET') {
    res.writeHead(200, { 'Content-Type': 'text/plain' });
    res.write('chunk-1;');
    res.write('chunk-2;');
    res.end('chunk-3');
    return;
  }

  res.writeHead(404);
  res.end();
});

await new Promise((resolve) => server.listen(0, '127.0.0.1', resolve));
const { port } = server.address();
const baseUrl = `http://127.0.0.1:${port}`;

try {
  // 1. got.get sends HTTP GET and automatically parses JSON response body when responseType is json
  {
    const data = await getJson(`${baseUrl}/api/hello`);
    assert.deepStrictEqual(data, { message: 'hello world' });

    const rawResponse = await got.get(`${baseUrl}/api/hello`, { responseType: 'json' });
    assert.strictEqual(rawResponse.statusCode, 200);
    assert.deepStrictEqual(rawResponse.body, { message: 'hello world' });
  }

  // 2. got.post sends JSON payload and receives parsed JSON response
  {
    const payload = { item: 'widget', quantity: 5 };
    const data = await postJson(`${baseUrl}/api/echo`, payload);
    assert.deepStrictEqual(data, { received: payload });

    const response = await got.post(`${baseUrl}/api/echo`, {
      json: { name: 'test' },
      responseType: 'json'
    });
    assert.strictEqual(response.statusCode, 200);
    assert.deepStrictEqual(response.body, { received: { name: 'test' } });
  }

  // 3. got.extend creates an isolated client instance with configured prefixUrl and default headers
  {
    const client = createClient(baseUrl, { 'x-custom-token': 'token-abc-123' });
    const response = await client.get('api/custom-header');
    assert.strictEqual(response.statusCode, 200);
    assert.deepStrictEqual(response.body, { token: 'token-abc-123' });
  }

  // 4. got serializes URL search parameters using the searchParams option
  {
    const response = await got.get(`${baseUrl}/api/search`, {
      searchParams: { q: 'sample', page: 3 },
      responseType: 'json'
    });
    assert.strictEqual(response.statusCode, 200);
    assert.deepStrictEqual(response.body, { query: 'sample', page: 3 });
  }

  // 5. got throws HTTPError on 4xx/5xx responses containing response details, unless throwHttpErrors is disabled
  {
    let caughtErr = null;
    try {
      await got.get(`${baseUrl}/api/error-404`, { responseType: 'json' });
    } catch (err) {
      caughtErr = err;
    }
    assert.ok(caughtErr instanceof got.HTTPError, 'Should throw got.HTTPError');
    assert.strictEqual(caughtErr.response.statusCode, 404);
    assert.deepStrictEqual(caughtErr.response.body, { error: 'not found' });

    // With throwHttpErrors: false
    const nonThrowingResponse = await got.get(`${baseUrl}/api/error-404`, {
      responseType: 'json',
      throwHttpErrors: false
    });
    assert.strictEqual(nonThrowingResponse.statusCode, 404);
    assert.deepStrictEqual(nonThrowingResponse.body, { error: 'not found' });
  }

  // 6. got.stream returns a readable stream for streaming response body chunks
  {
    const stream = got.stream(`${baseUrl}/api/stream-data`);
    let content = '';
    for await (const chunk of stream) {
      content += chunk.toString('utf8');
    }
    assert.strictEqual(content, 'chunk-1;chunk-2;chunk-3');
  }

  console.log('All got contracts passed successfully.');
} finally {
  server.close();
}