Exemplo

@rollup/plugin-commonjs 28.0.7: ignoreDynamicRequires

Amostra verificada para npm @rollup/plugin-commonjs 28.0.7: ignoreDynamicRequires. O contrato rodou em node 22 · linux debian/x64 · docker e passou.

sha256:f1cf48ca8bc69cdae1a8d9d62831794c2255e844ef7b5fe464bd246c0a3adbd8

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 debian/x64 · docker ed25519:c1973797be207ac4	PASS	compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · node-typescript@1node:22@sha256:8a34c4ab3ea2…	2026-09-03

Caso

HOW

Objetivo: verify ignoreDynamicRequires in pkg:npm/%40rollup/plugin-commonjs@28.0.7
Pacotes: @rollup/plugin-commonjs 28.0.7
Símbolos: ignoreDynamicRequires
Criado: 2026-09-03T10:17:21Z

Contrato

assert @rollup/plugin-commonjs with default ignoreDynamicRequires (false) rewrites dynamic require calls into commonjsRequire helper that throws a runtime error
assert setting ignoreDynamicRequires: true leaves dynamic require calls unmodified in the output code without generating commonjsRequire helper
assert bundles generated with ignoreDynamicRequires: true successfully invoke native require at runtime in Node.js environments
assert when dynamicRequireTargets is configured, ignoreDynamicRequires: true falls back to invoking native require for unmatched modules instead of throwing

Arquivos

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

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

Código-fonte

NOTES.md

# Notes: Rollup CommonJS Plugin Dynamic Require Handling

## Search Result
`search_known_solution` returned `NO_SAFE_MATCH` for `ignoreDynamicRequires` in `@rollup/plugin-commonjs@28.0.7`. Existing samples for this major line cover `strictRequires`, `requireReturnsDefault`, and `transformMixedEsModules`. This sample demonstrates how the plugin handles dynamic `require(...)` calls via the `ignoreDynamicRequires` option.

## Naive Model Assumption
A developer or coding model assumes that when bundling CommonJS modules with Rollup, dynamic `require(specifier)` expressions (where the argument is a variable or expression rather than a string literal) are simply left untouched as native `require()` calls in the output bundle.

## Failure Mode
By default (`ignoreDynamicRequires: false`), `@rollup/plugin-commonjs` rewrites dynamic `require(...)` calls into a generated `commonjsRequire` helper that unconditionally throws at runtime: `Error: Could not dynamically require "...". Please configure the dynamicRequireTargets or/and ignoreDynamicRequires option of @rollup/plugin-commonjs appropriately for this require call to work.`
Even when executed in Node.js where `require` is available, any invocation of dynamic requires crashes with this error.
Setting `ignoreDynamicRequires: true` prevents the plugin from rewriting dynamic requires into the throwing helper, leaving the raw `require(...)` call intact in the output. Furthermore, when `dynamicRequireTargets` is configured, `ignoreDynamicRequires: true` causes unmatched dynamic require calls to fall back to native `require(path)` instead of throwing.

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 ignoreDynamicRequires in pkg:npm/%40rollup/plugin-commonjs@28.0.7
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/%40rollup/plugin-commonjs@28.0.7
Demonstrate these symbols/APIs:
  - ignoreDynamicRequires

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":{"believed":"Bundling CommonJS code with Rollup leaves dynamic require calls as native runtime require invocations in the output bundle.","caseId":"case:sha256:91c1911880237070598c06ea5151cfa3fa8ddfb8e44ba9fe3571f32a8416db0d","contract":["assert @rollup/plugin-commonjs with default ignoreDynamicRequires (false) rewrites dynamic require calls into commonjsRequire helper that throws a runtime error","assert setting ignoreDynamicRequires: true leaves dynamic require calls unmodified in the output code without generating commonjsRequire helper","assert bundles generated with ignoreDynamicRequires: true successfully invoke native require at runtime in Node.js environments","assert when dynamicRequireTargets is configured, ignoreDynamicRequires: true falls back to invoking native require for unmatched modules instead of throwing"],"goal":"verify ignoreDynamicRequires in pkg:npm/%40rollup/plugin-commonjs@28.0.7","kind":"HOW","packages":["pkg:npm/%40rollup/plugin-commonjs@28.0.7"],"schemaVersion":1,"symbols":["ignoreDynamicRequires"]},"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/%40rollup/plugin-commonjs@28.0.7"],"schemaVersion":1,"subject":"pkg:npm/%40rollup/plugin-commonjs@28.0.7","symbols":["ignoreDynamicRequires"],"verifierAdapter":"node-typescript@1"}

package-lock.json

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      "license": "MIT",
      "engines": {
        "node": ">=12"
      },
      "funding": {
        "url": "https://github.com/sponsors/jonschlinkert"
      }
    },
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      "bin": {
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      },
      "engines": {
        "node": ">=18.0.0",
        "npm": ">=8.0.0"
      },
      "optionalDependencies": {
        "@rollup/rollup-android-arm-eabi": "4.34.8",
        "@rollup/rollup-android-arm64": "4.34.8",
        "@rollup/rollup-darwin-arm64": "4.34.8",
        "@rollup/rollup-darwin-x64": "4.34.8",
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        "fsevents": "~2.3.2"
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      "resolved": "https://registry.npmjs.org/@types/estree/-/estree-1.0.6.tgz",
      "integrity": "sha512-AYnb1nQyY49te+VRAVgmzfcgjYS91mY5P0TKUDCLEM+gNnA+3T6rWITXRLYCpahpqSQbN5cE+gHpnPyXjHWxcw==",
      "license": "MIT"
    }
  }
}

package.json

{
  "name": "npm-rollup-plugin-commonjs-ignore-dynamic-requires",
  "version": "1.0.0",
  "private": true,
  "type": "module",
  "license": "MIT-0",
  "scripts": {
    "test": "node test/contract.mjs"
  },
  "dependencies": {
    "@rollup/plugin-commonjs": "28.0.7",
    "rollup": "4.34.8"
  }
}

spec.json

{
  "schemaVersion": 1,
  "goal": "verify ignoreDynamicRequires in pkg:npm/%40rollup/plugin-commonjs@28.0.7",
  "kind": "HOW",
  "packages": [
    "pkg:npm/%40rollup/plugin-commonjs@28.0.7"
  ],
  "symbols": [
    "ignoreDynamicRequires"
  ]
}

test/contract.mjs

import { strict as assert } from 'node:assert';
import { rollup } from 'rollup';
import commonjs from '@rollup/plugin-commonjs';
import vm from 'node:vm';

async function runContract() {
  const dynamicRequireSource = `
function dynamicLoad(moduleName) {
  return require(moduleName);
}
module.exports = { dynamicLoad };
`;

  // ---------------------------------------------------------------------------
  // Contract Assertion 1:
  // Default ignoreDynamicRequires: false rewrites dynamic require calls into
  // commonjsRequire helper that throws a runtime Error.
  // ---------------------------------------------------------------------------
  const bundleDefault = await rollup({
    input: 'virtual-entry.cjs',
    plugins: [
      {
        name: 'virtual-module',
        resolveId(id) {
          if (id === 'virtual-entry.cjs') return id;
        },
        load(id) {
          if (id === 'virtual-entry.cjs') return dynamicRequireSource;
        }
      },
      commonjs()
    ],
    onwarn: () => {}
  });

  const { output: [outDefault] } = await bundleDefault.generate({ format: 'cjs' });

  assert.match(
    outDefault.code,
    /function commonjsRequire\(path\)/,
    'default ignoreDynamicRequires should generate commonjsRequire helper'
  );
  assert.match(
    outDefault.code,
    /Could not dynamically require/,
    'commonjsRequire helper should contain error message about dynamic requires'
  );

  const sandboxDefault = {
    module: { exports: {} },
    exports: {},
    console,
    process
  };
  vm.createContext(sandboxDefault);
  vm.runInContext(outDefault.code, sandboxDefault);

  assert.throws(
    () => sandboxDefault.module.exports.dynamicLoad('node:fs'),
    {
      name: 'Error',
      message: /Could not dynamically require "node:fs"/
    },
    'invoking dynamicLoad should throw Could not dynamically require error under default configuration'
  );

  // ---------------------------------------------------------------------------
  // Contract Assertion 2:
  // Setting ignoreDynamicRequires: true leaves dynamic require calls unmodified
  // in the output without generating commonjsRequire helper.
  // ---------------------------------------------------------------------------
  const bundleIgnored = await rollup({
    input: 'virtual-entry.cjs',
    plugins: [
      {
        name: 'virtual-module',
        resolveId(id) {
          if (id === 'virtual-entry.cjs') return id;
        },
        load(id) {
          if (id === 'virtual-entry.cjs') return dynamicRequireSource;
        }
      },
      commonjs({ ignoreDynamicRequires: true })
    ],
    onwarn: () => {}
  });

  const { output: [outIgnored] } = await bundleIgnored.generate({ format: 'cjs' });

  assert.doesNotMatch(
    outIgnored.code,
    /function commonjsRequire/,
    'ignoreDynamicRequires: true should not generate commonjsRequire helper'
  );
  assert.match(
    outIgnored.code,
    /return require\(moduleName\);/,
    'ignoreDynamicRequires: true should preserve the original require(moduleName) call'
  );

  // ---------------------------------------------------------------------------
  // Contract Assertion 3:
  // Bundles generated with ignoreDynamicRequires: true successfully invoke
  // native require at runtime in environments providing require.
  // ---------------------------------------------------------------------------
  const capturedCalls = [];
  const sandboxIgnored = {
    module: { exports: {} },
    exports: {},
    require(specifier) {
      capturedCalls.push(specifier);
      return { loaded: specifier, success: true };
    },
    console,
    process
  };
  vm.createContext(sandboxIgnored);
  vm.runInContext(outIgnored.code, sandboxIgnored);

  const loadResult = sandboxIgnored.module.exports.dynamicLoad('custom-dynamic-dep');
  assert.deepEqual(capturedCalls, ['custom-dynamic-dep']);
  assert.equal(loadResult.loaded, 'custom-dynamic-dep');
  assert.equal(loadResult.success, true);

  // ---------------------------------------------------------------------------
  // Contract Assertion 4:
  // When dynamicRequireTargets is configured, ignoreDynamicRequires: true falls
  // back to native require(path) for unmatched modules instead of throwing.
  // ---------------------------------------------------------------------------
  const dynamicTargetsSource = `
const knownTarget = require('./known-target.cjs');
function loadFallback(id) {
  return require(id);
}
module.exports = { knownTarget, loadFallback };
`;

  const bundleTargetsDefault = await rollup({
    input: 'virtual-entry-targets.cjs',
    plugins: [
      {
        name: 'virtual-targets-module',
        resolveId(id) {
          if (id === 'virtual-entry-targets.cjs' || id === './known-target.cjs') return id;
        },
        load(id) {
          if (id === 'virtual-entry-targets.cjs') return dynamicTargetsSource;
          if (id === './known-target.cjs') return 'module.exports = { target: true };';
        }
      },
      commonjs({
        dynamicRequireTargets: ['./known-target.cjs'],
        ignoreDynamicRequires: false
      })
    ],
    onwarn: () => {}
  });

  const { output: [outTargetsDefault] } = await bundleTargetsDefault.generate({ format: 'cjs' });
  const sandboxTargetsDefault = {
    module: { exports: {} },
    exports: {},
    console,
    process
  };
  vm.createContext(sandboxTargetsDefault);
  vm.runInContext(outTargetsDefault.code, sandboxTargetsDefault);

  assert.throws(
    () => sandboxTargetsDefault.module.exports.loadFallback('./unmatched-target.cjs'),
    {
      name: 'Error',
      message: /Could not dynamically require "\.\/unmatched-target\.cjs"/
    },
    'dynamicRequireTargets with ignoreDynamicRequires: false should throw on unmatched dynamic require'
  );

  const bundleTargetsFallback = await rollup({
    input: 'virtual-entry-targets.cjs',
    plugins: [
      {
        name: 'virtual-targets-module',
        resolveId(id) {
          if (id === 'virtual-entry-targets.cjs' || id === './known-target.cjs') return id;
        },
        load(id) {
          if (id === 'virtual-entry-targets.cjs') return dynamicTargetsSource;
          if (id === './known-target.cjs') return 'module.exports = { target: true };';
        }
      },
      commonjs({
        dynamicRequireTargets: ['./known-target.cjs'],
        ignoreDynamicRequires: true
      })
    ],
    onwarn: () => {}
  });

  const { output: [outTargetsFallback] } = await bundleTargetsFallback.generate({ format: 'cjs' });
  const fallbackCalls = [];
  const sandboxTargetsFallback = {
    module: { exports: {} },
    exports: {},
    require(specifier) {
      fallbackCalls.push(specifier);
      return { fallback: specifier };
    },
    console,
    process
  };
  vm.createContext(sandboxTargetsFallback);
  vm.runInContext(outTargetsFallback.code, sandboxTargetsFallback);

  assert.equal(sandboxTargetsFallback.module.exports.knownTarget.target, true);

  const fallbackResult = sandboxTargetsFallback.module.exports.loadFallback('./unmatched-target.cjs');
  assert.deepEqual(fallbackCalls, ['./unmatched-target.cjs']);
  assert.equal(fallbackResult.fallback, './unmatched-target.cjs');

  console.log('All contract assertions passed successfully.');
}

runContract().catch((err) => {
  console.error('Contract failed:', err);
  process.exit(1);
});

Seeder de origem

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