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샘플

body-parser 1.20.3: urlencoded

검증된 샘플 — npm body-parser 1.20.3: urlencoded. node 22 · linux debian/x64 · docker에서 contract를 실행해 통과했습니다: bodyParser.urlencoded parses basic form urlencoded…

sha256:217a51d4ae0b331bf026a50925a2697cbb71f805780fa6ac207a6d6d6e77123f

이 네트워크가 제공하는 것은 하나입니다. 빌드되는 샘플. 샌드박스에서 돌리고 서명된 영수증을 보관합니다. 등급을 매기지 않고 무엇도 보증하지 않습니다 — 같은 코드가 당신 환경에서 빌드되는지는 측정한 적이 없습니다. 통과한 계약 영수증을 낸 서로 다른 서명 키의 수입니다. 하나면 작성자 혼자이고, 둘 이상이면 다른 사람도 빌드했다는 뜻입니다. 키는 스스로 만드는 것이고 뒤에 등록된 신원이 없으므로, 세는 것은 사람이 아니라 키입니다. MIT-0

실행 증거

선언된 환경과 서명된 실행을 분리해 두었습니다. 이 샘플이 무엇을 어디서 실행했는지 그대로 볼 수 있습니다.

증거 기준
서명된 컨트랙트 통과
검증 영수증
1
빌드한 서명 키
1
선언된 환경 linux 24 · ubuntu · glibc 2.39 x64 npm

검증 실행 환경

환경 컨트랙트 단계 실행일
node 22 · linux debian/x64 · docker ed25519:c1973797be207ac4 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · node-typescript@1node:22@sha256:8a34c4ab3ea2…		 2026-09-19

케이스

HOW
목표
verify urlencoded in pkg:npm/body-parser@1.20.3
패키지
심벌
  • urlencoded
생성일
2026-09-19T16:53:26Z

컨트랙트

  1. bodyParser.urlencoded parses basic form urlencoded data into key-value pairs
  2. bodyParser.urlencoded with extended true parses nested object hierarchy
  3. bodyParser.urlencoded rejects payload exceeding byte limit with 413 status code
  4. bodyParser.urlencoded verify option captures raw buffer before parsing
  5. bodyParser.urlencoded parameterLimit option rejects requests with too many parameters

파일

  • PROMPT.md
  • csx.json
  • package-lock.json
  • package.json
  • spec.json
  • src/index.mjs
  • test/contract.mjs

소스 아티팩트 내려받기 (tar.gz)

소스

PROMPT.md
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 urlencoded in pkg:npm/body-parser@1.20.3
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/body-parser@1.20.3
Demonstrate these symbols/APIs:
  - urlencoded

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.
csx.json
{"case":{"caseId":"case:sha256:4931cf4aa70a7c31f35d5845c0297fca0537efffcea4e009f033fe81f7aeb19c","contract":["bodyParser.urlencoded parses basic form urlencoded data into key-value pairs","bodyParser.urlencoded with extended true parses nested object hierarchy","bodyParser.urlencoded rejects payload exceeding byte limit with 413 status code","bodyParser.urlencoded verify option captures raw buffer before parsing","bodyParser.urlencoded parameterLimit option rejects requests with too many parameters"],"goal":"verify urlencoded in pkg:npm/body-parser@1.20.3","kind":"HOW","packages":["pkg:npm/body-parser@1.20.3"],"schemaVersion":1,"symbols":["urlencoded"]},"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/body-parser@1.20.3"],"schemaVersion":1,"subject":"pkg:npm/body-parser@1.20.3","symbols":["urlencoded"],"verifierAdapter":"node-typescript@1"}
package-lock.json
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package.json
{
  "name": "sample-body-parser-urlencoded",
  "version": "1.0.0",
  "type": "module",
  "private": true,
  "dependencies": {
    "body-parser": "1.20.3"
  }
}
spec.json
{
  "schemaVersion": 1,
  "goal": "verify urlencoded in pkg:npm/body-parser@1.20.3",
  "kind": "HOW",
  "packages": [
    "pkg:npm/body-parser@1.20.3"
  ],
  "symbols": [
    "urlencoded"
  ]
}
src/index.mjs
import bodyParser from 'body-parser';

export { bodyParser };

/**
 * Execute a body-parser middleware against a request stream.
 * @param {Function} middleware - body-parser middleware instance
 * @param {object} req - Request stream or mock request
 * @param {object} [res={}] - Response object
 * @returns {Promise<any>} Resolves with req.body
 */
export function runMiddleware(middleware, req, res = {}) {
  return new Promise((resolve, reject) => {
    middleware(req, res, (err) => {
      if (err) {
        return reject(err);
      }
      resolve(req.body);
    });
  });
}

export const urlencoded = bodyParser.urlencoded;

export default bodyParser;
test/contract.mjs
import assert from 'node:assert';
import { Readable } from 'node:stream';
import bodyParser, { runMiddleware, urlencoded } from '../src/index.mjs';

function createMockReq(bodyContent, contentType = 'application/x-www-form-urlencoded') {
  const req = new Readable({
    read() {
      if (bodyContent !== undefined && bodyContent !== null) {
        this.push(bodyContent);
      }
      this.push(null);
    }
  });
  const length = bodyContent ? Buffer.byteLength(bodyContent) : 0;
  req.headers = {
    'content-type': contentType,
    'content-length': length.toString()
  };
  return req;
}

// 1. bodyParser.urlencoded parses basic form urlencoded data into key-value pairs
{
  const parser = urlencoded({ extended: false });
  const req = createMockReq('user=alice&role=engineer');
  const body = await runMiddleware(parser, req);
  assert.strictEqual(body.user, 'alice');
  assert.strictEqual(body.role, 'engineer');
}

// 2. bodyParser.urlencoded with extended true parses nested object hierarchy
{
  const parser = urlencoded({ extended: true });
  const req = createMockReq('config%5Bmode%5D=strict&config%5Btimeout%5D=5000');
  const body = await runMiddleware(parser, req);
  assert.deepStrictEqual(body.config, { mode: 'strict', timeout: '5000' });
}

// 3. bodyParser.urlencoded rejects payload exceeding byte limit with 413 status code
{
  const parser = urlencoded({ extended: false, limit: 10 });
  const req = createMockReq('param=payload-that-exceeds-ten-bytes');
  await assert.rejects(
    async () => {
      await runMiddleware(parser, req);
    },
    (err) => {
      assert.strictEqual(err.status, 413);
      assert.strictEqual(err.type, 'entity.too.large');
      return true;
    }
  );
}

// 4. bodyParser.urlencoded verify option captures raw buffer before parsing
{
  let rawBufferCaptured = null;
  const parser = urlencoded({
    extended: false,
    verify: (req, res, buf) => {
      rawBufferCaptured = buf;
    }
  });
  const payload = 'greeting=hello&target=world';
  const req = createMockReq(payload);
  const body = await runMiddleware(parser, req);
  assert.strictEqual(body.greeting, 'hello');
  assert.strictEqual(body.target, 'world');
  assert(Buffer.isBuffer(rawBufferCaptured));
  assert.strictEqual(rawBufferCaptured.toString('utf8'), payload);
}

// 5. bodyParser.urlencoded parameterLimit option rejects requests with too many parameters
{
  const parser = urlencoded({ extended: false, parameterLimit: 2 });
  const req = createMockReq('a=1&b=2&c=3');
  await assert.rejects(
    async () => {
      await runMiddleware(parser, req);
    },
    (err) => {
      assert.strictEqual(err.status, 413);
      assert.strictEqual(err.type, 'parameters.too.many');
      return true;
    }
  );
}

console.log('Contract tests passed successfully.');

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