CodeSampleX

Sample

@rollup/plugin-commonjs 28.0.2: ignoreGlobal

Verified sample for npm @rollup/plugin-commonjs 28.0.2: ignoreGlobal. The contract ran on node 22 · linux debian/x64 · docker and passed.

sha256:d279e8c841bb7385d5dfa68a4578005b76ac981946d1ce16a4f54471ba92ab3c

This network offers one thing: a sample that builds. It ran the sample in a sandbox and kept the signed receipt. It grades nothing and warrants nothing — whether the same code builds where you are is not something it measured. How many distinct signing keys filed a passing contract receipt. One is the author alone; more than one means somebody else built it too. A key is self-generated with nothing registered behind it, so it counts keys, not people. MIT-0

Execution evidence

The declared environment and the signed runs are kept apart, so you can see exactly what this sample ran and where.

Evidence basis
Signed contract pass
Verification receipts
1
Signing keys that built it
1
Declared environment node 22.23 linux 24 · ubuntu · glibc 2.39 x64 node 22.23 javascript npm

Verification-run environments

Environment Contract Stages Run
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

Case

HOW
Goal
verify ignoreGlobal in pkg:npm/%40rollup/plugin-commonjs@28.0.2
Packages
Symbols
  • ignoreGlobal
Environment
node 22.23.2
Created
2026-09-03T14:49:49Z

Contract

  1. By default (ignoreGlobal: false), references to the global identifier in CommonJS modules are rewritten to the commonjsGlobal helper variable.
  2. Setting ignoreGlobal: true preserves references to the global identifier without rewriting them to commonjsGlobal.
  3. When ignoreGlobal: true, the commonjsGlobal helper definition is omitted from the bundled output if no other features require it.
  4. A module containing only the global identifier without module, exports, or require is recognized and transformed as CommonJS by default, but is treated as a standard non-CommonJS module when ignoreGlobal: true.
  5. Setting ignoreGlobal: true preserves top-level this references without rewriting them to commonjsGlobal or module exports.

Files

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

Download the source artifact (tar.gz)

Source

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 ignoreGlobal in pkg:npm/%40rollup/plugin-commonjs@28.0.2
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/%40rollup/plugin-commonjs@28.0.2
Demonstrate these symbols/APIs:
  - ignoreGlobal
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
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package-lock.json
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}
package.json
{
  "name": "sample-rollup-plugin-commonjs-ignoreglobal",
  "version": "1.0.0",
  "dependencies": {
    "@rollup/plugin-commonjs": "28.0.2",
    "rollup": "4.62.4"
  }
}
spec.json
{
  "schemaVersion": 1,
  "goal": "verify ignoreGlobal in pkg:npm/%40rollup/plugin-commonjs@28.0.2",
  "kind": "HOW",
  "packages": [
    "pkg:npm/%40rollup/plugin-commonjs@28.0.2"
  ],
  "symbols": [
    "ignoreGlobal"
  ],
  "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 { rollup } from 'rollup';
import commonjs from '@rollup/plugin-commonjs';

async function bundleEntry(sourceCode, pluginOptions = {}, format = 'es') {
  const entryId = 'virtual-entry.js';
  const bundle = await rollup({
    input: entryId,
    plugins: [
      {
        name: 'virtual-loader',
        resolveId(id) {
          if (id === entryId) return id;
          return null;
        },
        load(id) {
          if (id === entryId) return sourceCode;
          return null;
        }
      },
      commonjs(pluginOptions)
    ]
  });
  const { output } = await bundle.generate({ format });
  return output[0].code;
}

async function runContracts() {
  // Contract 1: By default (ignoreGlobal: false), references to the global identifier in CommonJS modules are rewritten to the commonjsGlobal helper variable.
  {
    const code = `
      global.__csx_sample_val = 'hello';
      module.exports = global.__csx_sample_val;
    `;
    const bundled = await bundleEntry(code, {}, 'es');
    assert.match(
      bundled,
      /commonjsGlobal\.__csx_sample_val = 'hello'/,
      'Default transform rewrites global reference to commonjsGlobal'
    );
    assert.doesNotMatch(
      bundled,
      /global\.__csx_sample_val = 'hello'/,
      'Default transform does not leave raw global reference untouched'
    );
  }

  // Contract 2: Setting ignoreGlobal: true preserves references to the global identifier without rewriting them to commonjsGlobal.
  {
    const code = `
      global.__csx_sample_val = 'hello';
      module.exports = global.__csx_sample_val;
    `;
    const bundled = await bundleEntry(code, { ignoreGlobal: true }, 'es');
    assert.match(
      bundled,
      /global\.__csx_sample_val = 'hello'/,
      'ignoreGlobal: true preserves raw global reference'
    );
    assert.doesNotMatch(
      bundled,
      /commonjsGlobal/,
      'ignoreGlobal: true does not rewrite global to commonjsGlobal'
    );
  }

  // Contract 3: When ignoreGlobal: true, the commonjsGlobal helper definition is omitted from the bundled output if no other features require it.
  {
    const code = `
      global.__csx_helper_test = 42;
      module.exports = global.__csx_helper_test;
    `;
    const bundledDefault = await bundleEntry(code, {}, 'es');
    assert.match(
      bundledDefault,
      /var commonjsGlobal = typeof globalThis !== 'undefined'/,
      'Default bundles include commonjsGlobal helper definition'
    );

    const bundledIgnored = await bundleEntry(code, { ignoreGlobal: true }, 'es');
    assert.doesNotMatch(
      bundledIgnored,
      /commonjsGlobal/,
      'Bundle with ignoreGlobal: true omits commonjsGlobal helper'
    );
  }

  // Contract 4: A module containing only the global identifier without module, exports, or require is recognized and transformed as CommonJS by default, but is treated as a standard non-CommonJS module when ignoreGlobal: true.
  {
    const standaloneCode = `global.__csx_standalone_flag = true;`;
    const bundledDefault = await bundleEntry(standaloneCode, {}, 'es');
    assert.match(
      bundledDefault,
      /commonjsGlobal\.__csx_standalone_flag = true/,
      'File with only global is recognized and transformed as CJS under default settings'
    );
    assert.match(
      bundledDefault,
      /getDefaultExportFromCjs/,
      'File with only global gets CJS export wrapper by default'
    );

    const bundledIgnored = await bundleEntry(standaloneCode, { ignoreGlobal: true }, 'es');
    assert.equal(
      bundledIgnored.trim(),
      'global.__csx_standalone_flag = true;',
      'File with only global is not treated as CJS when ignoreGlobal: true'
    );
    assert.doesNotMatch(
      bundledIgnored,
      /getDefaultExportFromCjs/,
      'Non-CJS module is not wrapped with CJS export helpers'
    );
  }

  // Contract 5: Setting ignoreGlobal: true preserves top-level this references without rewriting them to commonjsGlobal or module exports.
  {
    const codeWithThis = `
      this.__csx_prop = 'value';
      module.exports = 1;
    `;
    const bundledDefault = await bundleEntry(codeWithThis, {}, 'es');
    assert.doesNotMatch(
      bundledDefault,
      /this\.__csx_prop = 'value'/,
      'Top-level this is rewritten under default ignoreGlobal: false'
    );

    const bundledIgnored = await bundleEntry(codeWithThis, { ignoreGlobal: true }, 'es');
    assert.match(
      bundledIgnored,
      /this\.__csx_prop = 'value'/,
      'Top-level this remains untouched when ignoreGlobal: true'
    );
  }

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

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

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