CodeSampleX

Exemple

@eslint-community/eslint-utils 4.10.1

Échantillon vérifié pour npm @eslint-community/eslint-utils 4.10.1. Le contrat s'est exécuté sur node 22 · linux alpine/x64 · docker et a réussi.

sha256:04b93e31c8918063943f88f1aeed94761557f536dc13dc0b15f792d78279c3de

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

Environnements des exécutions de vérification

Environnement Contrat Étapes Exécution
node 22 · linux alpine/x64 · docker ed25519:c1973797be207ac4 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · node-typescript@1		 2026-08-20

Cas

HOW
Objectif
verify pkg:npm/%40eslint-community/eslint-utils@4.10.1
Paquets
Environnement
node 22.23.2
Créé
2026-08-20T23:45:49Z

Contrat

  1. getPropertyName extracts static and computed property names from MemberExpression and Property AST nodes
  2. getStaticValue evaluates constant literal expressions, template literals, and binary operations to their static runtime values
  3. getStringIfConstant converts constant literals or static template literals into string representations
  4. hasSideEffect determines whether an AST expression contains state mutations or function calls
  5. PatternMatcher finds all RegExp matches across target source strings and tracks match indices
  6. ReferenceTracker traverses global variable references and matches specified call and read access patterns

Fichiers

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

Télécharger l’artefact source (tar.gz)

Code 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 pkg:npm/%40eslint-community/eslint-utils@4.10.1
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/%40eslint-community/eslint-utils@4.10.1
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
{"case":{"caseId":"case:sha256:7f058e97e5805c478dcbf07e2ae66d66c58aaaf7924bdb87b1043f0152af589f","constraints":{"executionContext":"node"},"contract":["getPropertyName extracts static and computed property names from MemberExpression and Property AST nodes","getStaticValue evaluates constant literal expressions, template literals, and binary operations to their static runtime values","getStringIfConstant converts constant literals or static template literals into string representations","hasSideEffect determines whether an AST expression contains state mutations or function calls","PatternMatcher finds all RegExp matches across target source strings and tracks match indices","ReferenceTracker traverses global variable references and matches specified call and read access patterns"],"goal":"verify pkg:npm/%40eslint-community/eslint-utils@4.10.1","kind":"HOW","packages":["pkg:npm/%40eslint-community/eslint-utils@4.10.1"],"schemaVersion":1},"contractCommand":["node","test/contract.mjs"],"environment":{"arch":"x64","distro":"ubuntu","ecosystem":"npm","executionContext":"node","language":"javascript","libc":"glibc","libcVersion":"2.39","moduleSystem":"cjs","os":"linux","osVersionBucket":"24","packageManager":"npm","runtime":"node","runtimeVersion":"22.23.2","schemaVersion":1},"license":"MIT-0","packages":["pkg:npm/%40eslint-community/eslint-utils@4.10.1"],"schemaVersion":1,"subject":"pkg:npm/%40eslint-community/eslint-utils@4.10.1","verifierAdapter":"node-typescript@1"}
package-lock.json
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        "isexe": "^2.0.0"
      },
      "bin": {
        "node-which": "bin/node-which"
      },
      "engines": {
        "node": ">= 8"
      }
    },
    "node_modules/word-wrap": {
      "version": "1.2.5",
      "resolved": "https://registry.npmjs.org/word-wrap/-/word-wrap-1.2.5.tgz",
      "integrity": "sha512-BN22B5eaMMI9UMtjrGd5g5eCYPpCPDUy0FJXbYsaT5zYxjFOckS53SQDE3pWkVoWpHXVb3BrYcEN4Twa55B5cA==",
      "license": "MIT",
      "peer": true,
      "engines": {
        "node": ">=0.10.0"
      }
    },
    "node_modules/yocto-queue": {
      "version": "0.1.0",
      "resolved": "https://registry.npmjs.org/yocto-queue/-/yocto-queue-0.1.0.tgz",
      "integrity": "sha512-rVksvsnNCdJ/ohGc6xgPwyN8eheCxsiLM8mxuE/t/mOVqJewPuO1miLpTHQiRgTKCLexL4MeAFVagts7HmNZ2Q==",
      "license": "MIT",
      "peer": true,
      "engines": {
        "node": ">=10"
      },
      "funding": {
        "url": "https://github.com/sponsors/sindresorhus"
      }
    }
  }
}
package.json
{
  "name": "sample-eslint-utils",
  "version": "1.0.0",
  "type": "module",
  "license": "MIT-0",
  "dependencies": {
    "@eslint-community/eslint-utils": "4.10.1"
  }
}
spec.json
{
  "schemaVersion": 1,
  "goal": "verify pkg:npm/%40eslint-community/eslint-utils@4.10.1",
  "kind": "HOW",
  "packages": [
    "pkg:npm/%40eslint-community/eslint-utils@4.10.1"
  ],
  "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 { createRequire } from 'node:module';

const require = createRequire(import.meta.url);
const {
  getPropertyName,
  getStaticValue,
  getStringIfConstant,
  hasSideEffect,
  PatternMatcher,
  ReferenceTracker,
  CALL,
  READ,
  CONSTRUCT,
  ESM
} = require('@eslint-community/eslint-utils');

// 1. getPropertyName extracts static and computed property names from MemberExpression and Property AST nodes
{
  const staticMember = {
    type: 'MemberExpression',
    object: { type: 'Identifier', name: 'process' },
    property: { type: 'Identifier', name: 'env' },
    computed: false
  };
  assert.equal(getPropertyName(staticMember), 'env');

  const computedMember = {
    type: 'MemberExpression',
    object: { type: 'Identifier', name: 'config' },
    property: { type: 'Literal', value: 'port', raw: '"port"' },
    computed: true
  };
  assert.equal(getPropertyName(computedMember), 'port');

  const propNode = {
    type: 'Property',
    key: { type: 'Identifier', name: 'host' },
    value: { type: 'Literal', value: 'localhost' },
    kind: 'init',
    method: false,
    shorthand: false,
    computed: false
  };
  assert.equal(getPropertyName(propNode), 'host');
}

// 2. getStaticValue evaluates constant literal expressions, template literals, and binary operations to their static runtime values
{
  const literalNode = { type: 'Literal', value: 42, raw: '42' };
  assert.deepEqual(getStaticValue(literalNode), { value: 42 });

  const binaryNode = {
    type: 'BinaryExpression',
    operator: '+',
    left: { type: 'Literal', value: 100 },
    right: { type: 'Literal', value: 25 }
  };
  assert.deepEqual(getStaticValue(binaryNode), { value: 125 });

  const templateNode = {
    type: 'TemplateLiteral',
    quasis: [
      { type: 'TemplateElement', value: { cooked: 'hello ', raw: 'hello ' } },
      { type: 'TemplateElement', value: { cooked: 'world', raw: 'world' } }
    ],
    expressions: [{ type: 'Literal', value: 'there' }]
  };
  assert.deepEqual(getStaticValue(templateNode), { value: 'hello thereworld' });
}

// 3. getStringIfConstant converts constant literals or static template literals into string representations
{
  const strLit = { type: 'Literal', value: 'strict-mode', raw: '"strict-mode"' };
  assert.equal(getStringIfConstant(strLit), 'strict-mode');

  const numLit = { type: 'Literal', value: 123, raw: '123' };
  assert.equal(getStringIfConstant(numLit), '123');

  const dynamicIdent = { type: 'Identifier', name: 'dynamicVar' };
  assert.equal(getStringIfConstant(dynamicIdent), null);

  const staticTemplate = {
    type: 'TemplateLiteral',
    quasis: [{ type: 'TemplateElement', value: { cooked: 'constant-text', raw: 'constant-text' } }],
    expressions: []
  };
  assert.equal(getStringIfConstant(staticTemplate), 'constant-text');
}

// 4. hasSideEffect determines whether an AST expression contains state mutations or function calls
{
  const emptySourceCode = {};
  const pureNode = { type: 'Literal', value: 10 };
  assert.equal(hasSideEffect(pureNode, emptySourceCode), false);

  const callExpression = {
    type: 'CallExpression',
    callee: { type: 'Identifier', name: 'execute' },
    arguments: []
  };
  assert.equal(hasSideEffect(callExpression, emptySourceCode), true);

  const assignmentExpression = {
    type: 'AssignmentExpression',
    operator: '=',
    left: { type: 'Identifier', name: 'total' },
    right: { type: 'Literal', value: 0 }
  };
  assert.equal(hasSideEffect(assignmentExpression, emptySourceCode), true);
}

// 5. PatternMatcher finds all RegExp matches across target source strings and tracks match indices
{
  const matcher = new PatternMatcher(/item-(\d+)/g);
  const text = 'item-10 and item-20';
  const matches = Array.from(matcher.execAll(text));

  assert.equal(matches.length, 2);
  assert.equal(matches[0][0], 'item-10');
  assert.equal(matches[0][1], '10');
  assert.equal(matches[0].index, 0);

  assert.equal(matches[1][0], 'item-20');
  assert.equal(matches[1][1], '20');
  assert.equal(matches[1].index, 12);
}

// 6. ReferenceTracker traverses global variable references and matches specified call and read access patterns
{
  const mockGlobalScope = {
    set: new Map([
      [
        'fetch',
        {
          name: 'fetch',
          defs: [],
          references: [
            {
              identifier: { type: 'Identifier', name: 'fetch' },
              isRead: () => true,
              isWrite: () => false,
              init: false
            }
          ]
        }
      ]
    ])
  };

  const tracker = new ReferenceTracker(mockGlobalScope);
  const traceMap = {
    fetch: {
      [CALL]: true,
      [READ]: true
    }
  };

  const references = Array.from(tracker.iterateGlobalReferences(traceMap));
  assert.equal(references.length, 1);
  assert.equal(references[0].node.name, 'fetch');
  assert.deepEqual(references[0].path, ['fetch']);
  assert.equal(references[0].type, READ);
}

console.log('Contract assertions passed.');

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