Exemple
@rollup/plugin-commonjs 29.0.3: ignoreDynamicRequires
Échantillon vérifié pour npm @rollup/plugin-commonjs 29.0.3: ignoreDynamicRequires. Le contrat s'est exécuté sur node 22 · linux debian/x64 · docker et a…
sha256:91ed65a55baa1bd56defffedd5911892303a39e6df88b4a92419a90e92f13c84
Ce réseau offre une seule chose : un échantillon qui compile. Il l'a exécuté dans un bac à sable et conservé le reçu signé. Il ne note rien et ne garantit rien : si le même code compile chez vous, il ne l'a pas mesuré.
Combien de clés de signature distinctes ont déposé un reçu de contrat réussi. Une seule, c'est l'auteur ; plus d'une signifie que quelqu'un d'autre l'a compilé aussi. Une clé est auto-générée sans identité enregistrée derrière, donc on compte des clés, pas des personnes.
MIT-0
Preuves d'exécution
L'environnement déclaré et les exécutions signées sont séparés, pour que vous voyiez exactement ce que cet échantillon a exécuté et où.
- Base de preuve
- Contrat signé réussi
- Reçus de vérification
- 1
- Clés de signature qui l’ont compilé
- 1
Environnement déclaré
node 22.23 linux 24 · ubuntu · glibc 2.39 x64 node 22.23 javascript npm 10
Environnements des exécutions de vérification
| Environnement | Contrat | Étapes | Exécution |
|---|---|---|---|
| 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 |
Cas
HOW- Objectif
- verify ignoreDynamicRequires in pkg:npm/%40rollup/plugin-commonjs@29.0.3
- Paquets
- Symboles
-
- ignoreDynamicRequires
- Environnement
- node 22.23.2
- Créé
- 2026-09-03T13:15:13Z
Contrat
- By default, @rollup/plugin-commonjs transforms dynamic require calls into commonjsRequire helper calls that throw an error instructing the user to configure dynamicRequireTargets or ignoreDynamicRequires.
- Setting ignoreDynamicRequires: true preserves dynamic require calls as untransformed native require expressions in the bundle output without emitting the throwing commonjsRequire helper.
- By default, referencing require as a standalone identifier rewrites the identifier to commonjsRequire.
- Setting ignoreDynamicRequires: true preserves standalone require identifier references without rewriting them to commonjsRequire.
- When dynamicRequireTargets is configured, setting ignoreDynamicRequires: true provides a fallback to the ambient require function for unmatched module paths instead of throwing.
- When executed in an environment with an ambient require function, bundles built with ignoreDynamicRequires: true invoke the ambient require rather than throwing.
Fichiers
- NOTES.md
- PROMPT.md
- csx.json
- package-lock.json
- package.json
- spec.json
- test/contract.mjs
Code source
# Notes: Rollup CommonJS Plugin Dynamic Require Handling with ignoreDynamicRequires
## Search Result
`search_known_solution` returned `NO_SAFE_MATCH` for `ignoreDynamicRequires` in `@rollup/plugin-commonjs@29.0.3`. Existing public samples for this version cover `defaultIsModuleExports`, `requireNodeBuiltins`, `esmExternals`, and `ignoreTryCatch`. This sample verifies runtime behavior and bundling output when handling dynamic require calls with `ignoreDynamicRequires`.
## Naive Model Assumption
Developers and models often assume that `@rollup/plugin-commonjs` either automatically resolves dynamic require expressions at runtime, or leaves dynamic require statements intact by default.
## Failure Mode
By default (`ignoreDynamicRequires: false`), `@rollup/plugin-commonjs` rewrites dynamic `require(...)` calls and standalone `require` identifier references to an internal `commonjsRequire` helper that unconditionally throws an error 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.`). Setting `ignoreDynamicRequires: true` preserves dynamic `require` expressions as untransformed native `require` calls and allows fallback to the ambient runtime require when used with `dynamicRequireTargets`.
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@29.0.3
Kind: HOW
Use EXACTLY these public packages and versions:
- pkg:npm/%40rollup/plugin-commonjs@29.0.3
Demonstrate these symbols/APIs:
- ignoreDynamicRequires
Constraints:
- executionContext: node
Required runtime conditions:
- ecosystem: npm
- language: javascript
- moduleSystem: cjs
- 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.
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}
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}
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},
"bin": {
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},
"engines": {
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"npm": ">=8.0.0"
},
"optionalDependencies": {
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"@rollup/rollup-win32-x64-gnu": "4.62.4",
"@rollup/rollup-win32-x64-msvc": "4.62.4",
"fsevents": "~2.3.2"
}
}
}
}
{
"name": "sample-rollup-plugin-commonjs-ignore-dynamic-requires",
"version": "1.0.0",
"type": "commonjs",
"dependencies": {
"@rollup/plugin-commonjs": "29.0.3",
"rollup": "4.62.4"
}
}
{
"schemaVersion": 1,
"goal": "verify ignoreDynamicRequires in pkg:npm/%40rollup/plugin-commonjs@29.0.3",
"kind": "HOW",
"packages": [
"pkg:npm/%40rollup/plugin-commonjs@29.0.3"
],
"symbols": [
"ignoreDynamicRequires"
],
"constraints": {
"executionContext": "node"
},
"runtimeConditions": {
"ecosystem": "npm",
"language": "javascript",
"moduleSystem": "cjs",
"packageManager": "npm@10.9.8",
"runtime": "node@22.23.2"
}
}
import assert from 'node:assert/strict';
import { rollup } from 'rollup';
import commonjs from '@rollup/plugin-commonjs';
async function runContract() {
// ---------------------------------------------------------------------------
// Contract 1:
// By default, @rollup/plugin-commonjs transforms dynamic require calls into
// commonjsRequire helper calls that throw an error instructing the user to
// configure dynamicRequireTargets or ignoreDynamicRequires.
// ---------------------------------------------------------------------------
{
const bundle = await rollup({
input: 'entry-default.js',
plugins: [
{
name: 'virtual-loader',
resolveId(id) {
if (id === 'entry-default.js') return id;
},
load(id) {
if (id === 'entry-default.js') {
return `
function loadModule(name) {
return require(name);
}
module.exports = { loadModule };
`;
}
}
},
commonjs()
]
});
const { output } = await bundle.generate({ format: 'cjs' });
const code = output[0].code;
assert.match(
code,
/commonjsRequire\(name\)/,
'Default transform rewrites dynamic require(name) to commonjsRequire(name)'
);
assert.match(
code,
/function commonjsRequire\(path\)/,
'Default options define commonjsRequire helper in output bundle'
);
assert.match(
code,
/Could not dynamically require/,
'commonjsRequire helper contains dynamic require failure message'
);
assert.match(
code,
/Please configure the dynamicRequireTargets or\/and ignoreDynamicRequires option/,
'Failure message mentions ignoreDynamicRequires configuration option'
);
// Verify execution throws
const fn = new Function('exports', 'module', 'require', code);
const mod = { exports: {} };
fn(mod.exports, mod, () => {
throw new Error('Should not reach ambient require');
});
assert.throws(
() => mod.exports.loadModule('arbitrary-pkg'),
{
name: 'Error',
message: 'Could not dynamically require "arbitrary-pkg". Please configure the dynamicRequireTargets or/and ignoreDynamicRequires option of @rollup/plugin-commonjs appropriately for this require call to work.'
},
'Default commonjsRequire throws expected error when executed'
);
}
// ---------------------------------------------------------------------------
// Contract 2:
// Setting ignoreDynamicRequires: true preserves dynamic require calls as
// untransformed native require expressions in the bundle output without
// emitting the throwing commonjsRequire helper.
// ---------------------------------------------------------------------------
{
const bundle = await rollup({
input: 'entry-ignore.js',
plugins: [
{
name: 'virtual-loader',
resolveId(id) {
if (id === 'entry-ignore.js') return id;
},
load(id) {
if (id === 'entry-ignore.js') {
return `
function loadModule(name) {
return require(name);
}
module.exports = { loadModule };
`;
}
}
},
commonjs({
ignoreDynamicRequires: true
})
]
});
const { output } = await bundle.generate({ format: 'cjs' });
const code = output[0].code;
assert.equal(
code.includes('commonjsRequire'),
false,
'ignoreDynamicRequires: true must not emit commonjsRequire helper'
);
assert.equal(
code.includes('Could not dynamically require'),
false,
'ignoreDynamicRequires: true must not include dynamic require error string'
);
assert.match(
code,
/return require\(name\);/,
'ignoreDynamicRequires: true leaves native require(name) call untouched'
);
}
// ---------------------------------------------------------------------------
// Contract 3:
// By default, referencing require as a standalone identifier rewrites the
// identifier to commonjsRequire.
// ---------------------------------------------------------------------------
{
const bundle = await rollup({
input: 'entry-ref-default.js',
plugins: [
{
name: 'virtual-loader',
resolveId(id) {
if (id === 'entry-ref-default.js') return id;
},
load(id) {
if (id === 'entry-ref-default.js') {
return `
const r = require;
module.exports = { r };
`;
}
}
},
commonjs()
]
});
const { output } = await bundle.generate({ format: 'cjs' });
const code = output[0].code;
assert.match(
code,
/r\s*=\s*commonjsRequire/,
'Default transform rewrites standalone require identifier to commonjsRequire'
);
assert.match(
code,
/function commonjsRequire\(path\)/,
'commonjsRequire helper is generated for identifier reference'
);
}
// ---------------------------------------------------------------------------
// Contract 4:
// Setting ignoreDynamicRequires: true preserves standalone require identifier
// references without rewriting them to commonjsRequire.
// ---------------------------------------------------------------------------
{
const bundle = await rollup({
input: 'entry-ref-ignore.js',
plugins: [
{
name: 'virtual-loader',
resolveId(id) {
if (id === 'entry-ref-ignore.js') return id;
},
load(id) {
if (id === 'entry-ref-ignore.js') {
return `
const r = require;
module.exports = { r };
`;
}
}
},
commonjs({
ignoreDynamicRequires: true
})
]
});
const { output } = await bundle.generate({ format: 'cjs' });
const code = output[0].code;
assert.equal(
code.includes('commonjsRequire'),
false,
'ignoreDynamicRequires: true does not emit commonjsRequire for identifier reference'
);
assert.match(
code,
/r\s*=\s*require/,
'ignoreDynamicRequires: true preserves standalone require identifier reference'
);
}
// ---------------------------------------------------------------------------
// Contract 5:
// When dynamicRequireTargets is configured, setting ignoreDynamicRequires: true
// provides a fallback to the ambient require function for unmatched module paths
// instead of throwing.
// ---------------------------------------------------------------------------
{
const bundle = await rollup({
input: 'entry-fallback.js',
plugins: [
{
name: 'virtual-loader',
resolveId(id) {
if (id === 'entry-fallback.js') return id;
if (id === './target-mod.js' || id === 'target-mod.js') return 'target-mod.js';
},
load(id) {
if (id === 'entry-fallback.js') {
return `
const target = require('./target-mod.js');
function loadDynamic(p) {
return require(p);
}
module.exports = { target, loadDynamic };
`;
}
if (id === 'target-mod.js') {
return `module.exports = 'bundled-target';`;
}
}
},
commonjs({
dynamicRequireTargets: ['target-mod.js'],
ignoreDynamicRequires: true
})
]
});
const { output } = await bundle.generate({ format: 'cjs' });
const code = output[0].code;
assert.equal(
code.includes('Could not dynamically require'),
false,
'dynamicRequireTargets with ignoreDynamicRequires: true removes throwing error'
);
assert.match(
code,
/return require\(path\);|return require\(p\);/,
'dynamicRequireTargets with ignoreDynamicRequires: true falls back to require'
);
}
// ---------------------------------------------------------------------------
// Contract 6:
// When executed in an environment with an ambient require function, bundles
// built with ignoreDynamicRequires: true invoke the ambient require rather
// than throwing.
// ---------------------------------------------------------------------------
{
const bundle = await rollup({
input: 'entry-exec.js',
plugins: [
{
name: 'virtual-loader',
resolveId(id) {
if (id === 'entry-exec.js') return id;
},
load(id) {
if (id === 'entry-exec.js') {
return `
exports.load = function(modPath) {
return require(modPath);
};
`;
}
}
},
commonjs({
ignoreDynamicRequires: true
})
]
});
const { output } = await bundle.generate({ format: 'cjs' });
const code = output[0].code;
const ambientCalls = [];
const ambientRequire = (specifier) => {
ambientCalls.push(specifier);
return { resolvedFromAmbient: specifier };
};
const fn = new Function('exports', 'module', 'require', code);
const mod = { exports: {} };
fn(mod.exports, mod, ambientRequire);
const result = mod.exports.load('ambient-module');
assert.deepEqual(
result,
{ resolvedFromAmbient: 'ambient-module' },
'Calling load invokes the ambient require and returns its result'
);
assert.deepEqual(
ambientCalls,
['ambient-module'],
'Ambient require was called with the exact specifier string'
);
}
console.log('All ignoreDynamicRequires contract assertions passed successfully.');
}
runContract().catch((err) => {
console.error('Contract failed:', err);
process.exit(1);
});
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