Exemplo

@babel/helper-module-transforms 8.0.1

Amostra verificada para npm @babel/helper-module-transforms 8.0.1. O contrato rodou em node 22 · linux alpine/x64 · docker e passou.

sha256:766a1238365cdd74e522078c68331f47df768828e4a0e712eed1d9ce94e32c08

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…	2026-08-26

Caso

HOW

Objetivo: verify pkg:npm/%40babel/helper-module-transforms@8.0.1
Pacotes: @babel/helper-module-transforms 8.0.1
Criado: 2026-08-26T06:27:46Z

Contrato

getModuleName resolves module names based on options, root configs, and custom getModuleId functions
isSideEffectImport identifies whether import metadata represents an import with no specifiers
hasExports reports whether the module metadata contains export declarations
isModule identifies whether program AST node has module source type
ensureStatementsHoisted marks statement AST nodes with the _blockHoist metadata property
buildDynamicImport transforms dynamic import AST nodes using a custom transform callback

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/helper-module-transforms@8.0.1
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/%40babel/helper-module-transforms@8.0.1

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-helper-module-transforms",
  "version": "1.0.0",
  "private": true,
  "type": "module",
  "license": "MIT-0",
  "dependencies": {
    "@babel/helper-module-transforms": "8.0.1"
  }
}

spec.json

{
  "schemaVersion": 1,
  "goal": "verify pkg:npm/%40babel/helper-module-transforms@8.0.1",
  "kind": "HOW",
  "packages": [
    "pkg:npm/%40babel/helper-module-transforms@8.0.1"
  ]
}

src/index.mjs

import {
  getModuleName,
  isSideEffectImport,
  hasExports,
  isModule,
  ensureStatementsHoisted,
  buildDynamicImport
} from "@babel/helper-module-transforms";

export function resolveModuleName(rootOpts, pluginOpts) {
  return getModuleName(rootOpts, pluginOpts);
}

export function checkIsSideEffect(sourceMetadata) {
  return isSideEffectImport(sourceMetadata);
}

export function checkHasExports(metadata) {
  return hasExports(metadata);
}

export function checkIsModule(programPath) {
  return isModule(programPath);
}

export function hoistStatements(statements) {
  ensureStatementsHoisted(statements);
  return statements;
}

export function transformDynamicImport(node, deferToThen, wrapWithPromise, builder) {
  return buildDynamicImport(node, deferToThen, wrapWithPromise, builder);
}

test/contract.mjs

import assert from "node:assert/strict";
import {
  getModuleName,
  isSideEffectImport,
  hasExports,
  isModule,
  ensureStatementsHoisted,
  buildDynamicImport
} from "@babel/helper-module-transforms";
import {
  resolveModuleName,
  checkIsSideEffect,
  checkHasExports,
  checkIsModule,
  hoistStatements,
  transformDynamicImport
} from "../src/index.mjs";

// Test 1: getModuleName resolves module names based on options, root configs, and custom getModuleId functions
{
  assert.equal(getModuleName({}, {}), null);
  assert.equal(resolveModuleName({}, {}), null);

  assert.equal(getModuleName({}, { moduleId: "my-custom-module" }), "my-custom-module");
  assert.equal(resolveModuleName({}, { moduleId: "my-custom-module" }), "my-custom-module");

  assert.equal(
    getModuleName({ filename: "src/components/button.js" }, { moduleIds: true }),
    "src/components/button"
  );
  assert.equal(
    resolveModuleName({ filename: "src/components/button.js" }, { moduleIds: true }),
    "src/components/button"
  );

  assert.equal(
    getModuleName({ filename: "src/components/button.js" }, { moduleIds: true, moduleRoot: "my-pkg" }),
    "my-pkg/src/components/button"
  );

  assert.equal(
    getModuleName(
      { filename: "src/index.js" },
      { moduleIds: true, getModuleId: (name) => `lib/${name}` }
    ),
    "lib/src/index"
  );
}

// Test 2: isSideEffectImport identifies whether import metadata represents an import with no specifiers
{
  const sideEffectSource = {
    imports: new Set(),
    importsNamespace: new Set(),
    reexports: new Map(),
    reexportNamespace: new Set(),
    reexportAll: null
  };
  assert.equal(isSideEffectImport(sideEffectSource), true);
  assert.equal(checkIsSideEffect(sideEffectSource), true);

  const namedImportSource = {
    imports: new Set(["foo"]),
    importsNamespace: new Set(),
    reexports: new Map(),
    reexportNamespace: new Set(),
    reexportAll: null
  };
  assert.equal(isSideEffectImport(namedImportSource), false);
  assert.equal(checkIsSideEffect(namedImportSource), false);
}

// Test 3: hasExports reports whether the module metadata contains export declarations
{
  assert.equal(hasExports({ hasExports: true }), true);
  assert.equal(checkHasExports({ hasExports: true }), true);

  assert.equal(hasExports({ hasExports: false }), false);
  assert.equal(checkHasExports({ hasExports: false }), false);
}

// Test 4: isModule identifies whether program AST node has module source type
{
  const moduleProgramPath = { node: { sourceType: "module" } };
  assert.equal(isModule(moduleProgramPath), true);
  assert.equal(checkIsModule(moduleProgramPath), true);

  const scriptProgramPath = { node: { sourceType: "script" } };
  assert.equal(isModule(scriptProgramPath), false);
  assert.equal(checkIsModule(scriptProgramPath), false);
}

// Test 5: ensureStatementsHoisted marks statement AST nodes with the _blockHoist metadata property
{
  const statements = [
    { type: "ExpressionStatement" },
    { type: "VariableDeclaration" }
  ];
  ensureStatementsHoisted(statements);
  assert.equal(statements[0]._blockHoist, 3);
  assert.equal(statements[1]._blockHoist, 3);

  const newStatements = [{ type: "ReturnStatement" }];
  hoistStatements(newStatements);
  assert.equal(newStatements[0]._blockHoist, 3);
}

// Test 6: buildDynamicImport transforms dynamic import AST nodes using a custom transform callback
{
  const mockImportCall = {
    type: "CallExpression",
    callee: { type: "Import" },
    arguments: [{ type: "StringLiteral", value: "./widget.js" }]
  };

  const transformed = buildDynamicImport(mockImportCall, false, false, (specifier) => ({
    type: "CallExpression",
    callee: { type: "Identifier", name: "require" },
    arguments: [specifier]
  }));

  assert.equal(transformed.type, "CallExpression");
  assert.equal(transformed.callee.name, "require");
  assert.equal(transformed.arguments[0].value, "./widget.js");

  const helperTransformed = transformDynamicImport(mockImportCall, false, false, (specifier) => ({
    type: "CallExpression",
    callee: { type: "Identifier", name: "require" },
    arguments: [specifier]
  }));
  assert.equal(helperTransformed.type, "CallExpression");
  assert.equal(helperTransformed.callee.name, "require");
}

console.log("All @babel/helper-module-transforms contract tests passed successfully.");

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