Ce que le réseau a trouvé
Chaque ligne ci-dessous est une mesure, pas un avis. Chacune renvoie à un échantillon publié dont le contract s'exécute dans un conteneur épinglé, réseau coupé : vous pouvez le rejouer et contredire le résultat.
Le système et le runtime viennent de l'environnement enregistré par l'échantillon ; les dimensions absentes sont exclues.
597 constats sur 8 écosystèmes.
- cargo
- composer
- gem
- golang
- hex
- npm
- pub
- pypi
Énoncé par l'échantillon, mesuré par son contrat
1–25 sur 568, mesurés par des échantillons publiés.
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pypiContrat d'échantillonpython · linux 24/x64cffi@2.1.1
On croitCalling ffi.string with maxlen reads the full byte length regardless of null bytes, and ffi.buffer on a pointer defaults to the full allocated buffer length.
MesuréCalling ffi.string(cdata, maxlen) truncates at the first null byte rather than reading maxlen bytes, while ffi.unpack extracts the exact byte count across embedded nulls.
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npmContrat d'échantillonnode · linux 24/x64browserslist@4.28.7
On croitModifying .browserslistrc on disk causes browserslist to automatically pick up the updated target configuration on subsequent queries in a long-running process.
MesuréWhen .browserslistrc is modified on disk during a process lifetime, browserslist continues to return stale cached configurations until browserslist.clearCaches() is explicitly invoked.
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npmContrat d'échantillonnode 22.23 · linux 24/x64@babel/preset-env@7.26.9
On croitModern compilation targets automatically negate all transforms regardless of configuration options like forceAllTransforms, and preset-level settings like bugfixes or loose are not systematically passed to configured plugins.
MesurépresetEnv with forceAllTransforms: true forces all 49 syntax transform plugins to activate even when targeting modern Chrome 120 (which normally requires 17).
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npmContrat d'échantillonnode 22.23 · linux 24/x64@rollup/plugin-commonjs@28.0.2
On croitWhen bundling CommonJS modules that require external dependencies into ESM, @rollup/plugin-commonjs automatically imports them as ES module namespaces or detects external module formats to preserve named exports.
MesuréBy default, @rollup/plugin-commonjs renders external dependencies required in CommonJS modules as default ESM imports rather than namespace imports.
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npmContrat d'échantillonnode 22.23 · linux 24/x64@rollup/plugin-commonjs@28.0.2
On croitWhen bundling CommonJS modules that wrap external require calls inside try-catch blocks into ESM, @rollup/plugin-commonjs always hoists the requires to top-level static imports or always preserves runtime try-catch error handling.
MesuréBy default, @rollup/plugin-commonjs leaves external require calls inside try-catch blocks untransformed as dynamic require() calls, preventing top-level static ESM imports.
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npmContrat d'échantillonnode · linux 24/x64@rollup/plugin-commonjs@28.0.2
On croitWhen bundling CommonJS modules containing dynamic require calls, @rollup/plugin-commonjs resolves dynamic calls automatically or leaves them untouched without requiring explicit configuration.
MesuréBy default, @rollup/plugin-commonjs transforms dynamic require calls into commonjsRequire helper calls that throw an error instructing the user to configure dynamicRequireTargets or ignoreDynamicRequires.
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npmContrat d'échantillonnode 22.23 · linux 24/x64@rollup/plugin-commonjs@29.0.3
On croitWhen bundling CommonJS modules with dynamic require expressions, @rollup/plugin-commonjs either automatically resolves dynamic calls at runtime or silently ignores them without error.
MesuréBy default, @rollup/plugin-commonjs transforms dynamic require calls into commonjsRequire helper calls that throw an error instructing the user to configure dynamicRequireTargets or ignoreDynamicRequires.
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npmContrat d'échantillonnode 22.23 · linux 24/x64@rollup/plugin-commonjs@29.0.3
On croitWhen bundling CommonJS modules that wrap external require calls inside try-catch blocks into ESM, @rollup/plugin-commonjs always hoists the requires to top-level static imports or always preserves runtime try-catch error handling.
MesuréBy default, @rollup/plugin-commonjs leaves external require calls inside try-catch blocks untransformed as dynamic require() calls, preventing top-level static ESM imports.
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npmContrat d'échantillonnode 22.23 · linux 24/x64@rollup/plugin-commonjs@29.0.3
On croitWhen bundling CommonJS modules that require external dependencies into ESM, @rollup/plugin-commonjs automatically imports them as ES module namespaces or detects external module formats to preserve named exports.
MesuréBy default, @rollup/plugin-commonjs renders external dependencies required in CommonJS modules as default ESM imports rather than namespace imports.
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npmContrat d'échantillonnode · linux 24/x64@babel/preset-env@7.26.9
On croitDevelopers expect specifying useBuiltIns alone without corejs to automatically configure polyfill plugins, or expect getPolyfillPlugins to return non-empty default plugins even when useBuiltIns is false or unset.
MesurégetPolyfillPlugins returns an empty array when useBuiltIns is unset, false, or not usage/entry, or when corejs is missing.
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npmContrat d'échantillonlinux 24/x64@rollup/plugin-commonjs@28.0.7
On croitBundling CommonJS code with Rollup leaves dynamic require calls as native runtime require invocations in the output bundle.
Mesuréassert @rollup/plugin-commonjs with default ignoreDynamicRequires (false) rewrites dynamic require calls into commonjsRequire helper that throws a runtime error
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npmContrat d'échantillonnode 22.23 · linux 24/x64@babel/preset-env@7.26.9
On croitModern compilation targets automatically negate all transforms regardless of configuration options like forceAllTransforms, and preset-level settings like bugfixes or shippedProposals do not alter plugin resolution counts for modern environments.
MesurépresetEnv with forceAllTransforms: true forces all 49 syntax transform plugins to activate even when targeting modern Chrome 120 (which normally requires 17).
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npmContrat d'échantillonnode 22.23 · linux 24/x64@babel/preset-env@8.0.2
On croitCompilation targets strictly dictate plugin selection, requiring full package names if manually overridden, and include and exclude silently resolve collisions by precedence rather than throwing an error.
MesuréConfiguring the include option with transform-arrow-functions forces transpilation of arrow functions to function expressions even when targeting modern runtimes (such as Chrome 120) that natively support them, while preserving non-included syntax like template literals.
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npmContrat d'échantillonnode 22.23 · linux 24/x64@babel/preset-env@8.0.2
On croitModern compilation targets like Chrome 120 prevent all syntax transformations, forceAllTransforms converts ES module syntax into CommonJS require calls, and exclude is ignored when forceAllTransforms is true.
MesuréWhen forceAllTransforms is omitted or false, @babel/preset-env preserves native modern syntax (arrow functions, template literals, optional chaining) for targets that natively support them.
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npmContrat d'échantillonnode 22.23 · linux 24/x64@rollup/plugin-commonjs@28.0.7
On croitBy default @rollup/plugin-commonjs hoists all CommonJS require calls including those inside try-catch blocks into top-level static imports.
Mesuréassert @rollup/plugin-commonjs by default (ignoreTryCatch: true) leaves external require calls inside try-catch blocks unconverted as runtime require statements without hoisting static imports
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npmContrat d'échantillonnode 22.23 · linux 24/x64@babel/preset-env@7.26.0
On croitConfiguring polyfill injection with useBuiltIns 'usage' or 'entry' generates identical plugin lists, and legacy polyfill handling is only applied when corejs version 2 is specified.
Mesuréassert useBuiltIns 'usage' with corejs 3 selects pluginCoreJS3 with method 'usage-global' and legacyBabelPolyfillPlugin marked as deprecated
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npmContrat d'échantillonnode · linux 24/x64@babel/preset-env@7.26.0
On croitDisabling module transforms in @babel/preset-env removes all module-related plugins entirely, and requesting dynamic import transformation enables transform-dynamic-import across all formats including UMD.
Mesuréassert modules: 'commonjs' with shouldTransformESM maps the module format to its transformation plugin alongside dynamic import and export-namespace transforms
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npmContrat d'échantillonnode · linux 24/x64@rollup/plugin-commonjs@28.0.7
On croitBy default @rollup/plugin-commonjs allows CommonJS modules requiring external ES modules to access both default and named exports.
Mesuréassert @rollup/plugin-commonjs with default esmExternals: false emits default imports for external dependencies, causing named exports to be inaccessible (undefined) when required from CommonJS
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npmContrat d'échantillonnode 22.23 · linux 24/x64@babel/preset-env@7.29.7
On croitModern compilation targets automatically negate all transforms regardless of configuration options like forceAllTransforms, and preset-level settings like bugfixes or loose are not systematically passed to configured plugins.
MesurépresetEnv with forceAllTransforms: true forces all 50 syntax transform plugins to activate even when targeting modern Chrome 120 (which normally requires 18).
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npmContrat d'échantillonnode · linux 24/x64@babel/preset-env@7.26.0
On croitTargeting a modern environment like Node 20 prevents syntax transforms like arrow functions from running, and targeting older environments compiles all modern syntax without granular options to selectively force or skip specific transforms.
Mesuréassert include with shorthand 'transform-arrow-functions' forces arrow function compilation on targets that natively support them such as node 20
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npmContrat d'échantillonnode 22 · linux 24/x64@babel/preset-env@7.29.7
On croitTarget-based compilation dynamically configures the plugin pipeline, and preset helper utilities resolve feature requirements and partition syntax transforms.
MesuréisPluginRequired returns true when target version is below support requirement, and false when target meets or exceeds requirement.
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npmContrat d'échantillonnode 22 · linux 24/x64@babel/preset-env@7.24.7
On croitTarget-based compilation dynamically configures the plugin pipeline, and preset helper utilities resolve feature requirements and partition syntax transforms.
MesuréisPluginRequired returns true when target version is below support requirement, and false when target meets or exceeds requirement.
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golangContrat d'échantillongo · linux/x64google.golang.org/protobuf@v1.35.1
On croitreflect.DeepEqual safely compares protobuf messages while proto.Equal behaves identically to standard struct comparisons.
Mesuréproto.Equal returns true when comparing two nil proto.Message values, and returns false when comparing a non-nil message with nil.
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pypiContrat d'échantillonpython · linux/x64pydantic@2.13.4
On croitPydantic field_validators always receive raw uncoerced input by default and can access all sibling fields in ValidationInfo.data regardless of field definition order.
MesuréLeaving field_validator mode unset defaults to 'after', running after core type coercion; inputs that fail core type coercion raise ValidationError before the after-validator executes.
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npmContrat d'échantillonnode 22.23 · linux 24/x64socket.io-client@4.8.1
On croitEmitted events are always intercepted immediately by onAnyOutgoing regardless of connection state, volatile.emit queues offline packets like standard emit, and emitWithAck resolves directly without handling socket.io error-first ack protocol or timeout errors.
Mesuréassert volatile emit while disconnected discards event immediately without queuing in sendBuffer whereas regular emit is queued
Comment vérifier n'importe quelle ligne
Ouvrez l'échantillon, lisez son contract, exécutez-le. Le contract est le test propre à l'échantillon : il tourne hors réseau dans un conteneur épinglé, et c'est le reçu signé de cette exécution que le réseau conserve. Rien ici ne repose sur notre lecture d'une bibliothèque, seulement sur ce qu'elle a fait.
Certains échantillons publiés ne figurent pas sur cette page. Leur contrat est passé et l'échantillon est en ligne, mais aucune ligne de ce contrat ne se lit comme une phrase. Une assertion comme expect(x).toBe(1), placée à côté de la croyance qu'elle vérifie, n'apprend rien au lecteur. Nous préférons les omettre plutôt que publier une preuve que personne ne peut lire.