CodeSampleX

Ejemplo

@babel/plugin-transform-duplicate-named-capturing-groups-regex 8.0.1

Muestra verificada para npm @babel/plugin-transform-duplicate-named-capturing-groups-regex 8.0.1. El contrato se ejecutó en node 22 · linux alpine/x64 …

sha256:08c417e21bab69fd6bb4e396712fb01b2f86ff45daf344ce99e412ad9bdf0d25

Esta red ofrece una sola cosa: una muestra que compila. La ejecutó en un sandbox y guardó el recibo firmado. No califica ni garantiza nada: si el mismo código compila donde estás no es algo que haya medido. Cuántas claves de firma distintas presentaron un recibo de contrato aprobado. Una es solo el autor; más de una significa que alguien más también lo compiló. Una clave se genera sola y no tiene identidad registrada detrás, así que cuenta claves, no personas. MIT-0

Evidencia de ejecución

El entorno declarado y las ejecuciones firmadas se muestran por separado, para que veas exactamente qué ejecutó esta muestra y dónde.

Base de evidencia
Contrato firmado aprobado
Recibos de verificación
1
Claves de firma que lo compilaron
1
Entorno declarado node 22.23 linux 24 · ubuntu · glibc 2.39 x64 node 22.23 javascript npm

Entornos de las ejecuciones de verificación

Entorno Contrato Etapas Ejecución
node 22 · linux alpine/x64 · docker ed25519:c1973797be207ac4 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · node-typescript@1		 2026-08-20

Caso

HOW
Objetivo
verify pkg:npm/%40babel/plugin-transform-duplicate-named-capturing-groups-regex@8.0.1
Paquetes
Entorno
node 22.23.2
Creado
2026-08-20T17:46:49Z

Contrato

  1. plugin exports a Babel plugin declaration function
  2. plugin returns a plugin object with name transform-duplicate-named-capturing-groups-regex and RegExpLiteral visitor
  3. plugin transforms duplicate named capturing groups into numbered groups wrapped with runtime helper
  4. transformed regex correctly populates named capture groups for both branches during exec and match
  5. transformed regex supports multiple duplicate named groups across alternation branches
  6. transformed regex supports string replacement using named capture group syntax
  7. transformed regex supports function replacement receiving named capture groups
  8. plugin leaves regular expressions without duplicate named capturing groups untouched

Archivos

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

Descargar el artefacto de código fuente (tar.gz)

Código fuente

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 pkg:npm/%40babel/plugin-transform-duplicate-named-capturing-groups-regex@8.0.1
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/%40babel/plugin-transform-duplicate-named-capturing-groups-regex@8.0.1
Constraints:
  - executionContext: node
Required runtime conditions:
  - ecosystem: npm
  - language: javascript
  - moduleSystem: cjs
  - runtime: node@22.23.2

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:sha256:7e6cce7cda70b9857c48b1ae82bd4e5c0b1dbf5915c2119d33cc48991961b638","constraints":{"executionContext":"node"},"contract":["plugin exports a Babel plugin declaration function","plugin returns a plugin object with name transform-duplicate-named-capturing-groups-regex and RegExpLiteral visitor","plugin transforms duplicate named capturing groups into numbered groups wrapped with runtime helper","transformed regex correctly populates named capture groups for both branches during exec and match","transformed regex supports multiple duplicate named groups across alternation branches","transformed regex supports string replacement using named capture group syntax","transformed regex supports function replacement receiving named capture groups","plugin leaves regular expressions without duplicate named capturing groups untouched"],"goal":"verify pkg:npm/%40babel/plugin-transform-duplicate-named-capturing-groups-regex@8.0.1","kind":"HOW","packages":["pkg:npm/%40babel/plugin-transform-duplicate-named-capturing-groups-regex@8.0.1"],"schemaVersion":1},"contractCommand":["node","test/contract.mjs"],"environment":{"arch":"x64","distro":"ubuntu","ecosystem":"npm","executionContext":"node","language":"javascript","libc":"glibc","libcVersion":"2.39","moduleSystem":"cjs","os":"linux","osVersionBucket":"24","packageManager":"npm","runtime":"node","runtimeVersion":"22.23.2","schemaVersion":1},"license":"MIT-0","packages":["pkg:npm/%40babel/plugin-transform-duplicate-named-capturing-groups-regex@8.0.1"],"schemaVersion":1,"subject":"pkg:npm/%40babel/plugin-transform-duplicate-named-capturing-groups-regex@8.0.1","verifierAdapter":"node-typescript@1"}
package-lock.json
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package.json
{
  "name": "sample-babel-plugin-transform-duplicate-named-capturing-groups-regex",
  "version": "1.0.0",
  "type": "module",
  "license": "MIT-0",
  "dependencies": {
    "@babel/plugin-transform-duplicate-named-capturing-groups-regex": "8.0.1"
  }
}
spec.json
{
  "schemaVersion": 1,
  "goal": "verify pkg:npm/%40babel/plugin-transform-duplicate-named-capturing-groups-regex@8.0.1",
  "kind": "HOW",
  "packages": [
    "pkg:npm/%40babel/plugin-transform-duplicate-named-capturing-groups-regex@8.0.1"
  ],
  "constraints": {
    "executionContext": "node"
  },
  "runtimeConditions": {
    "ecosystem": "npm",
    "language": "javascript",
    "moduleSystem": "cjs",
    "runtime": "node@22.23.2"
  }
}
test/contract.mjs
import assert from 'node:assert/strict';
import * as babel from '@babel/core';
import plugin from '@babel/plugin-transform-duplicate-named-capturing-groups-regex';

// 1. plugin exports a Babel plugin declaration function
assert.equal(typeof plugin, 'function', 'plugin must be a function');

// 2. plugin returns a plugin object with name transform-duplicate-named-capturing-groups-regex and RegExpLiteral visitor
const mockApi = {
  assertVersion: () => true,
  assumption: () => false
};
const pluginObj = plugin(mockApi, {});
assert.equal(typeof pluginObj, 'object', 'plugin factory must return an object');
assert.equal(pluginObj.name, 'transform-duplicate-named-capturing-groups-regex', 'plugin name must match');
assert.ok(pluginObj.visitor && pluginObj.visitor.RegExpLiteral, 'plugin must declare RegExpLiteral visitor');

// Helper to transform code using Babel with the plugin
function transformCode(source, options = {}) {
  return babel.transformSync(source, {
    plugins: [plugin],
    configFile: false,
    babelrc: false,
    ...options
  });
}

// Helper to evaluate transformed code in an isolated scope
function evaluateTransformed(source, options = {}) {
  const result = transformCode(source, options);
  const fn = new Function(result.code + '; return { re: typeof re !== "undefined" ? re : undefined, res: typeof res !== "undefined" ? res : undefined };');
  return fn();
}

// 3. plugin transforms duplicate named capturing groups into numbered groups wrapped with runtime helper
const codeSingle = 'var re = /(?<year>[0-9]{4})-[0-9]{2}|[0-9]{2}-(?<year>[0-9]{4})/;';
const resSingle = transformCode(codeSingle);
assert.ok(resSingle.code.includes('_wrapRegExp'), 'transformed code must use _wrapRegExp helper');
assert.ok(resSingle.code.includes('year'), 'mapping object must include capture group name');

// 4. transformed regex correctly populates named capture groups for both branches during exec and match
const evalSingle = evaluateTransformed(codeSingle);
const matchBranch1 = evalSingle.re.exec('2024-08');
assert.ok(matchBranch1, 'branch 1 should match');
assert.equal(matchBranch1.groups.year, '2024', 'branch 1 should capture year');

const matchBranch2 = evalSingle.re.exec('08-2024');
assert.ok(matchBranch2, 'branch 2 should match');
assert.equal(matchBranch2.groups.year, '2024', 'branch 2 should capture year');

const strMatch1 = '2024-08'.match(evalSingle.re);
assert.ok(strMatch1, 'String.prototype.match branch 1 should match');
assert.equal(strMatch1.groups.year, '2024', 'String.prototype.match branch 1 should capture year');

// 5. transformed regex supports multiple duplicate named groups across alternation branches
const codeMulti = 'var re = /(?<year>[0-9]{4})-(?<month>[0-9]{2})|(?<month>[0-9]{2})-(?<year>[0-9]{4})/;';
const evalMulti = evaluateTransformed(codeMulti);

const multiMatch1 = evalMulti.re.exec('2024-12');
assert.ok(multiMatch1, 'first multi-group pattern should match');
assert.equal(multiMatch1.groups.year, '2024', 'multi-group year should be captured');
assert.equal(multiMatch1.groups.month, '12', 'multi-group month should be captured');

const multiMatch2 = evalMulti.re.exec('12-2024');
assert.ok(multiMatch2, 'second multi-group pattern should match');
assert.equal(multiMatch2.groups.year, '2024', 'multi-group year should be captured');
assert.equal(multiMatch2.groups.month, '12', 'multi-group month should be captured');

// 6. transformed regex supports string replacement using named capture group syntax
const replaced1 = '2024-08'.replace(evalSingle.re, 'Year: $<year>');
assert.equal(replaced1, 'Year: 2024', 'replacement string should substitute $<year>');

const replaced2 = '08-2024'.replace(evalSingle.re, 'Year: $<year>');
assert.equal(replaced2, 'Year: 2024', 'replacement string should substitute $<year>');

// 7. transformed regex supports function replacement receiving named capture groups
let captured = null;
'2024-08'.replace(evalSingle.re, (...args) => {
  const groups = args[args.length - 1];
  captured = groups.year;
  return 'replaced';
});
assert.equal(captured, '2024', 'replacement function should receive groups object');

// 8. plugin leaves regular expressions without duplicate named capturing groups untouched
const codePlain = 'var re = /(?<year>[0-9]{4})-[0-9]{2}/;';
const resPlain = transformCode(codePlain);
assert.ok(!resPlain.code.includes('_wrapRegExp'), 'regex without duplicate group names must not be wrapped');

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

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