CodeSampleX

Exemplo

@babel/plugin-transform-duplicate-named-capturing-groups-regex 7.29.7: default

Amostra verificada para npm @babel/plugin-transform-duplicate-named-capturing-groups-regex 7.29.7: default. O contrato rodou em node 22 · linux alpine/x64 …

sha256:1d3526a68485862a282142be399a831808e180fd94fd4d0c5167da28b7c213ec

Esta rede oferece uma coisa: uma amostra que compila. Ela a executou em um sandbox e guardou o recibo assinado. Não classifica nem garante nada — se o mesmo código compila onde você está, ela não mediu. Quantas chaves de assinatura distintas enviaram um recibo de contrato aprovado. Uma é só o autor; mais de uma significa que outra pessoa também o compilou. Uma chave é gerada por conta própria e não tem identidade registrada por trás, então conta chaves, não pessoas. MIT-0

Evidência de execução

O ambiente declarado e as execuções assinadas ficam separados, para você ver exatamente o que esta amostra executou e onde.

Base da evidência
Contrato assinado aprovado
Recibos de verificação
1
Chaves de assinatura que o compilaram
1
Ambiente declarado node 22.23 linux 24 · ubuntu · glibc 2.39 x64 node 22.23 javascript npm 10

Ambientes das execuções de verificação

Ambiente Contrato Etapas Execução
node 22 · linux alpine/x64 · docker ed25519:c1973797be207ac4 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · node-typescript@1node:22-alpine@sha256:c610fcdfb1d5…		 2026-08-27

Caso

HOW
Objetivo
verify @babel/plugin-transform-duplicate-named-capturing-groups-regex.default in pkg:npm/%40babel/plugin-transform-duplicate-named-capturing-groups-regex@7.29.7
Pacotes
Símbolos
  • @babel/plugin-transform-duplicate-named-capturing-groups-regex.default
Ambiente
node 22.23.2
Criado
2026-08-27T12:07:56Z

Contrato

  1. Plugin default export is a function factory declaring Babel version compatibility
  2. Plugin factory returns an object named transform-duplicate-named-capturing-groups-regex with manipulateOptions, pre, and visitor.RegExpLiteral
  3. Plugin factory throws an Error when runtime option is non-boolean
  4. Plugin pre() sets duplicateNamedCaptureGroups feature flag and runtime options on Babel file context
  5. RegExpLiteral visitor compiles duplicate named capturing groups to numbered groups and wraps with wrapRegExp helper when runtime is true
  6. RegExpLiteral visitor compiles duplicate named capturing groups without wrapRegExp when runtime is false
  7. RegExpLiteral visitor skips wrapRegExp helper wrapping when RegExp is used in a test method expression
  8. RegExpLiteral visitor leaves regular expressions without duplicate named groups unchanged

Arquivos

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

Baixar o artefato de código-fonte (tar.gz)

Código-fonte

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 @babel/plugin-transform-duplicate-named-capturing-groups-regex.default in pkg:npm/%40babel/plugin-transform-duplicate-named-capturing-groups-regex@7.29.7
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/%40babel/plugin-transform-duplicate-named-capturing-groups-regex@7.29.7
Demonstrate these symbols/APIs:
  - @babel/plugin-transform-duplicate-named-capturing-groups-regex.default
Constraints:
  - executionContext: node
Required runtime conditions:
  - ecosystem: npm
  - language: javascript
  - moduleSystem: esm
  - packageManager: npm@10.9.8
  - 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
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package-lock.json
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package.json
{
  "name": "sample-babel-plugin-transform-duplicate-named-capturing-groups-regex",
  "version": "1.0.0",
  "private": true,
  "type": "module",
  "license": "MIT-0",
  "dependencies": {
    "@babel/plugin-transform-duplicate-named-capturing-groups-regex": "7.29.7"
  }
}
spec.json
{
  "schemaVersion": 1,
  "goal": "verify @babel/plugin-transform-duplicate-named-capturing-groups-regex.default in pkg:npm/%40babel/plugin-transform-duplicate-named-capturing-groups-regex@7.29.7",
  "kind": "HOW",
  "packages": [
    "pkg:npm/%40babel/plugin-transform-duplicate-named-capturing-groups-regex@7.29.7"
  ],
  "symbols": [
    "@babel/plugin-transform-duplicate-named-capturing-groups-regex.default"
  ],
  "constraints": {
    "executionContext": "node"
  },
  "runtimeConditions": {
    "ecosystem": "npm",
    "language": "javascript",
    "moduleSystem": "esm",
    "packageManager": "npm@10.9.8",
    "runtime": "node@22.23.2"
  }
}
src/index.mjs
import pluginModule from "@babel/plugin-transform-duplicate-named-capturing-groups-regex";

export const duplicateNamedCapturingGroupsRegexPlugin =
  typeof pluginModule === "function"
    ? pluginModule
    : pluginModule.default || pluginModule;

export function instantiatePlugin(api = {}, options = {}) {
  const normalizedApi = {
    assertVersion: (range) => {
      if (typeof api.assertVersion === "function") {
        api.assertVersion(range);
      }
    },
    ...api
  };
  return duplicateNamedCapturingGroupsRegexPlugin(normalizedApi, options);
}

export function createFileContext(initialEntries = {}) {
  const store = new Map(Object.entries(initialEntries));
  return {
    get(key) {
      return store.get(key);
    },
    set(key, value) {
      store.set(key, value);
    },
    has(key) {
      return store.has(key);
    },
    _store: store
  };
}

export function applyPluginPre(pluginInstance, file) {
  if (typeof pluginInstance?.pre === "function") {
    pluginInstance.pre.call({ file });
  }
}

export function transformRegExpLiteral(pluginInstance, file, path, helpers = {}) {
  if (!pluginInstance?.visitor?.RegExpLiteral) {
    throw new Error("Invalid plugin instance: missing visitor.RegExpLiteral");
  }
  const thisContext = {
    file,
    addHelper: (name) => {
      if (typeof helpers.addHelper === "function") {
        return helpers.addHelper(name);
      }
      return { type: "Identifier", name };
    }
  };
  return pluginInstance.visitor.RegExpLiteral.call(thisContext, path);
}

export function simulateTransformation({
  pattern,
  flags = "",
  options = {},
  isTest = false,
  api = {}
} = {}) {
  const instance = instantiatePlugin(api, options);
  const file = createFileContext();
  applyPluginPre(instance, file);

  const node = {
    type: "RegExpLiteral",
    pattern,
    flags
  };

  let replacedNode = null;
  const path = {
    node,
    parentPath: {
      isMemberExpression: ({ object, computed }) =>
        isTest && object === node && computed === false,
      get: (prop) => ({
        isIdentifier: ({ name }) => isTest && prop === "property" && name === "test"
      })
    },
    replaceWith(newNode) {
      replacedNode = newNode;
    }
  };

  transformRegExpLiteral(instance, file, path);

  return {
    instance,
    file,
    node,
    replacedNode,
    finalPattern: node.pattern,
    finalFlags: node.flags
  };
}
test/contract.mjs
import assert from "node:assert/strict";
import pluginModule from "@babel/plugin-transform-duplicate-named-capturing-groups-regex";
import {
  duplicateNamedCapturingGroupsRegexPlugin,
  instantiatePlugin,
  createFileContext,
  applyPluginPre,
  transformRegExpLiteral,
  simulateTransformation
} from "../src/index.mjs";

const rawPlugin =
  typeof pluginModule === "function"
    ? pluginModule
    : pluginModule.default || pluginModule;

// Contract 1: Plugin default export is a function factory declaring Babel version compatibility
{
  assert.equal(typeof duplicateNamedCapturingGroupsRegexPlugin, "function");
  assert.equal(typeof rawPlugin, "function");

  let assertedVersion = null;
  const api = {
    assertVersion: (range) => {
      assertedVersion = range;
    }
  };
  const pluginInstance = rawPlugin(api, {});
  assert.equal(assertedVersion, "^7.19.0 || ^8.0.0-0 || >8.0.0-alpha <8.0.0-beta");
  assert.ok(pluginInstance);
}

// Contract 2: Plugin factory returns an object named transform-duplicate-named-capturing-groups-regex with manipulateOptions, pre, and visitor.RegExpLiteral
{
  const api = {
    assertVersion: () => {}
  };
  const pluginInstance = instantiatePlugin(api, {});
  assert.equal(pluginInstance.name, "transform-duplicate-named-capturing-groups-regex");
  assert.equal(typeof pluginInstance.manipulateOptions, "function");
  assert.equal(typeof pluginInstance.pre, "function");
  assert.ok(pluginInstance.visitor);
  assert.equal(typeof pluginInstance.visitor.RegExpLiteral, "function");
}

// Contract 3: Plugin factory throws an Error when runtime option is non-boolean
{
  const api = {
    assertVersion: () => {}
  };
  assert.throws(
    () => instantiatePlugin(api, { runtime: "invalid" }),
    (err) => {
      assert.equal(err.message, "The 'runtime' option must be boolean");
      return true;
    }
  );
}

// Contract 4: Plugin pre() sets duplicateNamedCaptureGroups feature flag and runtime options on Babel file context
{
  const api = {
    assertVersion: () => {}
  };
  const pluginInstance = instantiatePlugin(api, { runtime: false });
  const file = createFileContext();
  applyPluginPre(pluginInstance, file);

  const featuresKey = "@babel/plugin-regexp-features/featuresKey";
  const runtimeKey = "@babel/plugin-regexp-features/runtimeKey";
  const versionKey = "@babel/plugin-regexp-features/version";

  assert.ok(file.has(featuresKey));
  assert.equal(file.get(runtimeKey), false);
  assert.equal(file.get(versionKey), "7.29.7");
}

// Contract 5: RegExpLiteral visitor compiles duplicate named capturing groups to numbered groups and wraps with wrapRegExp helper when runtime is true
{
  const result = simulateTransformation({
    pattern: "(?<year>\\d{4})-\\d{2}|\\d{2}-(?<year>\\d{4})",
    flags: "",
    options: { runtime: true }
  });

  assert.equal(result.finalPattern, "(\\d{4})-\\d{2}|\\d{2}-(\\d{4})");
  assert.ok(result.replacedNode);
  assert.equal(result.replacedNode.type, "CallExpression");
  assert.equal(result.replacedNode.callee?.name, "wrapRegExp");

  const [regexArg, mappingArg] = result.replacedNode.arguments;
  assert.equal(regexArg.type, "RegExpLiteral");
  assert.equal(regexArg.pattern, "(\\d{4})-\\d{2}|\\d{2}-(\\d{4})");
  assert.equal(mappingArg.type, "ObjectExpression");
  assert.equal(mappingArg.properties[0].key.name, "year");
  assert.deepEqual(
    mappingArg.properties[0].value.elements.map((el) => el.value),
    [1, 2]
  );
}

// Contract 6: RegExpLiteral visitor compiles duplicate named capturing groups without wrapRegExp when runtime is false
{
  const result = simulateTransformation({
    pattern: "(?<year>\\d{4})-\\d{2}|\\d{2}-(?<year>\\d{4})",
    flags: "",
    options: { runtime: false }
  });

  assert.equal(result.finalPattern, "(\\d{4})-\\d{2}|\\d{2}-(\\d{4})");
  assert.equal(result.replacedNode, null);
}

// Contract 7: RegExpLiteral visitor skips wrapRegExp helper wrapping when RegExp is used in a test method expression
{
  const result = simulateTransformation({
    pattern: "(?<year>\\d{4})-\\d{2}|\\d{2}-(?<year>\\d{4})",
    flags: "",
    options: { runtime: true },
    isTest: true
  });

  assert.equal(result.finalPattern, "(\\d{4})-\\d{2}|\\d{2}-(\\d{4})");
  assert.equal(result.replacedNode, null);
}

// Contract 8: RegExpLiteral visitor leaves regular expressions without duplicate named groups unchanged
{
  const result = simulateTransformation({
    pattern: "\\d{4}-\\d{2}",
    flags: "g",
    options: { runtime: true }
  });

  assert.equal(result.finalPattern, "\\d{4}-\\d{2}");
  assert.equal(result.finalFlags, "g");
  assert.equal(result.replacedNode, null);
}

console.log("All @babel/plugin-transform-duplicate-named-capturing-groups-regex contract tests passed successfully.");

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