Exemplo

@babel/plugin-transform-react-jsx-source 7.29.7

Amostra verificada para npm @babel/plugin-transform-react-jsx-source 7.29.7. O contrato rodou em node 22 · linux alpine/x64 · docker e passou.

sha256:6fe529114de4840b2cfb562fa6fa424ae8e44efd0427b7c2993ff7835bca2287

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 linux 24 · ubuntu · glibc 2.39 x64 npm

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…	2026-08-23

Caso

HOW

Objetivo: verify pkg:npm/%40babel/plugin-transform-react-jsx-source@7.29.7
Pacotes: @babel/plugin-transform-react-jsx-source 7.29.7
Criado: 2026-08-23T07:47:53Z

Contrato

Plugin default export is a function factory asserting Babel version 7 compatibility
Plugin factory returns a plugin object named transform-react-jsx-source with JSXOpeningElement visitor
Injects __source attribute with fileName, lineNumber, and columnNumber into JSXOpeningElement
Injects fileName variable declaration at program scope matching provided filename
Calculates 1-based columnNumber and lineNumber from AST node loc start position
Preserves existing __source attribute on JSXOpeningElement without duplicate injection
Handles nested JSX elements injecting independent source locations for each element
Handles JSX elements without location metadata without error
Helper functions createReactJsxSourcePlugin and transformReactJsxSource correctly transform JSX source code

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 pkg:npm/%40babel/plugin-transform-react-jsx-source@7.29.7
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/%40babel/plugin-transform-react-jsx-source@7.29.7

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-react-jsx-source",
  "version": "1.0.0",
  "private": true,
  "type": "module",
  "scripts": {
    "test": "node test/contract.mjs"
  },
  "dependencies": {
    "@babel/plugin-transform-react-jsx-source": "7.29.7"
  }
}

spec.json

{
  "schemaVersion": 1,
  "goal": "verify pkg:npm/%40babel/plugin-transform-react-jsx-source@7.29.7",
  "kind": "HOW",
  "packages": [
    "pkg:npm/%40babel/plugin-transform-react-jsx-source@7.29.7"
  ]
}

src/index.mjs

import * as babel from '@babel/core';
import reactJsxSourcePlugin from '@babel/plugin-transform-react-jsx-source';

/**
 * Creates and initializes the react-jsx-source plugin instance.
 * @param {object} [api] - Babel API object with types, template, assertVersion.
 * @param {object} [options] - Optional plugin options.
 * @returns {object} Plugin instance object with name and visitor.
 */
export function createReactJsxSourcePlugin(api, options = {}) {
  const plugin = reactJsxSourcePlugin.default || reactJsxSourcePlugin;
  const babelApi = api || {
    types: babel.types,
    template: babel.template,
    assertVersion: (range) => Boolean(range)
  };
  return plugin(babelApi, options);
}

/**
 * Transforms JSX source code using @babel/plugin-transform-react-jsx-source.
 * @param {string} source - Source code containing JSX to transform.
 * @param {object} [options] - Additional Babel transform options.
 * @returns {import('@babel/core').BabelFileResult} Babel transform result.
 */
export function transformReactJsxSource(source, options = {}) {
  const plugin = reactJsxSourcePlugin.default || reactJsxSourcePlugin;
  const parserPlugins = ['jsx'];
  if (options.parserOpts && options.parserOpts.plugins) {
    parserPlugins.push(...options.parserOpts.plugins);
  }

  const { parserOpts, plugins, filename, ...restOptions } = options;

  return babel.transformSync(source, {
    filename: filename || 'sample.jsx',
    configFile: false,
    babelrc: false,
    parserOpts: {
      plugins: parserPlugins,
      ...parserOpts
    },
    plugins: [
      plugin,
      ...(plugins || [])
    ],
    ...restOptions
  });
}

test/contract.mjs

import assert from 'node:assert/strict';
import * as babel from '@babel/core';
import reactJsxSourcePlugin from '@babel/plugin-transform-react-jsx-source';
import { createReactJsxSourcePlugin, transformReactJsxSource } from '../src/index.mjs';

// 1. Plugin default export is a function factory asserting Babel version 7 compatibility
const plugin = reactJsxSourcePlugin.default || reactJsxSourcePlugin;
assert.equal(typeof plugin, 'function', 'Plugin default export must be a function');

let assertedVersionRange = null;
const mockApi = {
  types: babel.types,
  template: babel.template,
  assertVersion(range) {
    assertedVersionRange = range;
  }
};
const instance = plugin(mockApi, {});
assert.equal(assertedVersionRange, 7, 'Plugin must assert Babel version 7 compatibility');

// 2. Plugin factory returns a plugin object named transform-react-jsx-source with JSXOpeningElement visitor
assert.equal(typeof instance, 'object', 'Plugin factory must return an object');
assert.equal(instance.name, 'transform-react-jsx-source', 'Plugin name must be transform-react-jsx-source');
assert.ok(instance.visitor && typeof instance.visitor.JSXOpeningElement === 'function', 'Plugin must define JSXOpeningElement visitor');

// 3. Injects __source attribute with fileName, lineNumber, and columnNumber into JSXOpeningElement
const sampleCode = 'const el = <div className="card">Content</div>;';
const sampleResult = transformReactJsxSource(sampleCode, { filename: 'components/Card.jsx' });
assert.ok(sampleResult.code.includes('__source='), 'Transformed code must contain __source prop');
assert.ok(sampleResult.code.includes('fileName:'), 'Transformed code must contain fileName in __source');
assert.ok(sampleResult.code.includes('lineNumber:'), 'Transformed code must contain lineNumber in __source');
assert.ok(sampleResult.code.includes('columnNumber:'), 'Transformed code must contain columnNumber in __source');

// 4. Injects fileName variable declaration at program scope matching provided filename
const customFilename = 'src/views/Header.jsx';
const headerResult = transformReactJsxSource('<header>Title</header>;', { filename: customFilename });
assert.ok(headerResult.code.includes(customFilename), 'Transformed code must reference specified filename');
assert.ok(headerResult.code.includes('_jsxFileName'), 'Transformed code must declare _jsxFileName identifier');

// 5. Calculates 1-based columnNumber and lineNumber from AST node loc start position
const buttonCode = '<button>Click</button>;';
const buttonResult = transformReactJsxSource(buttonCode, { filename: 'Button.jsx' });
assert.ok(buttonResult.code.includes('lineNumber: 1'), 'Line number must be 1 for first line JSX element');
assert.ok(buttonResult.code.includes('columnNumber: 1'), 'Column number must be 1 (1-based index) for element starting at column 0');

// 6. Preserves existing __source attribute on JSXOpeningElement without duplicate injection
const preExistingSourceCode = 'const pre = <span __source={{ fileName: "custom.jsx", lineNumber: 99, columnNumber: 3 }}>Text</span>;';
const preResult = transformReactJsxSource(preExistingSourceCode, { filename: 'Override.jsx' });
const occurrences = (preResult.code.match(/__source=/g) || []).length;
assert.equal(occurrences, 1, 'Pre-existing __source attribute should not receive duplicate injection');
assert.ok(preResult.code.includes('lineNumber: 99'), 'Pre-existing __source values must be preserved');

// 7. Handles nested JSX elements injecting independent source locations for each element
const nestedCode = `<div>
  <span>Child</span>
</div>;`;
const nestedResult = transformReactJsxSource(nestedCode, { filename: 'Nested.jsx' });
assert.ok(nestedResult.code.includes('lineNumber: 1'), 'Root element should have lineNumber 1');
assert.ok(nestedResult.code.includes('lineNumber: 2'), 'Nested child element should have lineNumber 2');

// 8. Handles JSX elements without location metadata without error
const nodeWithoutLoc = {
  attributes: []
};
const dummyPath = {
  node: nodeWithoutLoc,
  scope: {
    generateUidIdentifier: () => ({ name: '_jsxFileName' }),
    getProgramParent: () => ({ push: () => {} })
  }
};
assert.doesNotThrow(() => {
  instance.visitor.JSXOpeningElement(dummyPath, {});
}, 'Visitor should handle JSX opening element lacking loc without throwing');
assert.equal(nodeWithoutLoc.attributes.length, 0, 'No attributes should be injected when loc is missing');

// 9. Helper functions createReactJsxSourcePlugin and transformReactJsxSource correctly transform JSX source code
const helperPluginInstance = createReactJsxSourcePlugin();
assert.equal(helperPluginInstance.name, 'transform-react-jsx-source', 'Helper plugin must return valid plugin instance');

const helperResult = transformReactJsxSource('<p>Helper test</p>', { filename: 'Helper.jsx' });
assert.ok(helperResult.code.length > 0, 'Helper transform function must produce transformed code');
assert.ok(helperResult.code.includes('__source='), 'Helper transformed code must contain __source attribute');

console.log('Contract assertions passed.');

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