CodeSampleX

Ejemplo

@eslint-community/eslint-utils 4.10.1: findVariable, getFunctionNameWithKind, getInnermostScope

Muestra verificada para npm @eslint-community/eslint-utils 4.10.1: findVariable, getFunctionNameWithKind, getInnermostScope. El contrato se ejecutó en node…

sha256:a41354041ed729d0fc77a8e89ffb01702e3b7c8eeca8b6ae19243675c56568c1

Esta red ofrece una sola cosa: una muestra que compila. La ejecutó en un sandbox y guardó el recibo firmado. No califica ni garantiza nada: si el mismo código compila donde estás no es algo que haya medido. Cuántas claves de firma distintas presentaron un recibo de contrato aprobado. Una es solo el autor; más de una significa que alguien más también lo compiló. Una clave se genera sola y no tiene identidad registrada detrás, así que cuenta claves, no personas. MIT-0

Evidencia de ejecución

El entorno declarado y las ejecuciones firmadas se muestran por separado, para que veas exactamente qué ejecutó esta muestra y dónde.

Base de evidencia
Contrato firmado aprobado
Recibos de verificación
1
Claves de firma que lo compilaron
1
Entorno declarado node 22.23 linux 24 · ubuntu · glibc 2.39 x64 node 22.23 javascript npm

Entornos de las ejecuciones de verificación

Entorno Contrato Etapas Ejecución
node 22 · linux alpine/x64 · docker ed25519:c1973797be207ac4 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · node-typescript@1node:22-alpine@sha256:c610fcdfb1d5…		 2026-08-27

Caso

HOW
Objetivo
verify pkg:npm/%40eslint-community/eslint-utils@4.10.1
Paquetes
Símbolos
  • findVariable
  • getFunctionNameWithKind
  • getInnermostScope
  • isParenthesized
Entorno
node 22.23.2
Creado
2026-08-27T16:12:56Z

Contrato

  1. findVariable traverses the scope chain upwards to find a variable declaration by name or AST identifier node
  2. getFunctionNameWithKind returns the formatted kind and name of function, method, or arrow function AST nodes
  3. getInnermostScope locates the most deeply nested child scope covering the range of a target AST node
  4. isParenthesized verifies if an AST node is wrapped in one or more pairs of parentheses, throwing TypeError for non-positive repetition counts

Archivos

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

Descargar el artefacto de código fuente (tar.gz)

Código fuente

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
Demonstrate these symbols/APIs:
  - findVariable
  - getFunctionNameWithKind
  - getInnermostScope
  - isParenthesized

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:e2e74ebda892ec1be577c8ea13ddab0c587259983ce82f67ac4681ffe4c34f87","contract":["findVariable traverses the scope chain upwards to find a variable declaration by name or AST identifier node","getFunctionNameWithKind returns the formatted kind and name of function, method, or arrow function AST nodes","getInnermostScope locates the most deeply nested child scope covering the range of a target AST node","isParenthesized verifies if an AST node is wrapped in one or more pairs of parentheses, throwing TypeError for non-positive repetition counts"],"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,"symbols":["findVariable","getFunctionNameWithKind","getInnermostScope","isParenthesized"]},"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","symbols":["findVariable","getFunctionNameWithKind","getInnermostScope","isParenthesized"],"verifierAdapter":"node-typescript@1"}
package-lock.json
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      "resolved": "https://registry.npmjs.org/which/-/which-2.0.2.tgz",
      "integrity": "sha512-BLI3Tl1TW3Pvl70l3yq3Y64i+awpwXqsGBYWkkqMtnbXgrMD+yj7rhW0kuEDxzJaYXGjEW5ogapKNMEKNMjibA==",
      "license": "ISC",
      "peer": true,
      "dependencies": {
        "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"
  ],
  "symbols": [
    "findVariable",
    "getFunctionNameWithKind",
    "getInnermostScope",
    "isParenthesized"
  ]
}
test/contract.mjs
import assert from 'node:assert/strict';
import { createRequire } from 'node:module';

const require = createRequire(import.meta.url);
const {
  findVariable,
  getFunctionNameWithKind,
  getInnermostScope,
  isParenthesized
} = require('@eslint-community/eslint-utils');

// 1. findVariable traverses the scope chain upwards to find a variable declaration by name or AST identifier node
{
  const globalVar = { name: 'globalVar' };
  const localVar = { name: 'localVar' };

  const globalScope = {
    set: new Map([['globalVar', globalVar]]),
    upper: null,
    childScopes: []
  };

  const innerScope = {
    set: new Map([['localVar', localVar]]),
    upper: globalScope,
    childScopes: [],
    block: { range: [10, 30] }
  };
  globalScope.childScopes.push(innerScope);

  assert.equal(findVariable(globalScope, 'globalVar'), globalVar);
  assert.equal(findVariable(innerScope, 'globalVar'), globalVar);
  assert.equal(findVariable(innerScope, 'localVar'), localVar);
  assert.equal(findVariable(globalScope, 'localVar'), null);
  assert.equal(findVariable(globalScope, 'nonExistent'), null);

  const identNode = { type: 'Identifier', name: 'localVar', range: [15, 23] };
  assert.equal(findVariable(globalScope, identNode), localVar);
}

// 2. getFunctionNameWithKind returns the formatted kind and name of function, method, or arrow function AST nodes
{
  const unparentedFunc = { type: 'FunctionDeclaration', id: { name: 'orphan' } };
  assert.equal(getFunctionNameWithKind(unparentedFunc), '');

  const funcDecl = {
    type: 'FunctionDeclaration',
    id: { name: 'calculateTotal' },
    async: false,
    generator: false
  };
  funcDecl.parent = { type: 'Program' };
  assert.equal(getFunctionNameWithKind(funcDecl), "function 'calculateTotal'");

  const arrowFunc = {
    type: 'ArrowFunctionExpression',
    async: true,
    generator: false
  };
  arrowFunc.parent = {
    type: 'VariableDeclarator',
    id: { type: 'Identifier', name: 'fetchData' }
  };
  assert.equal(getFunctionNameWithKind(arrowFunc), "async arrow function 'fetchData'");

  const methodNode = {
    type: 'FunctionExpression',
    async: true,
    generator: true
  };
  methodNode.parent = {
    type: 'MethodDefinition',
    key: { type: 'Identifier', name: 'streamItems' },
    value: methodNode,
    kind: 'method',
    static: true,
    computed: false
  };
  assert.equal(getFunctionNameWithKind(methodNode), "static async generator method 'streamItems'");

  const ctorNode = {
    type: 'FunctionExpression',
    async: false,
    generator: false
  };
  ctorNode.parent = {
    type: 'MethodDefinition',
    key: { type: 'Identifier', name: 'constructor' },
    value: ctorNode,
    kind: 'constructor',
    static: false,
    computed: false
  };
  assert.equal(getFunctionNameWithKind(ctorNode), 'constructor');
}

// 3. getInnermostScope locates the most deeply nested child scope covering the range of a target AST node
{
  const innermost = {
    block: { range: [20, 30] },
    childScopes: []
  };
  const middle = {
    block: { range: [10, 40] },
    childScopes: [innermost]
  };
  const root = {
    block: { range: [0, 100] },
    childScopes: [middle]
  };

  const insideInnermost = { range: [25, 28] };
  assert.equal(getInnermostScope(root, insideInnermost), innermost);

  const insideMiddleOnly = { range: [35, 38] };
  assert.equal(getInnermostScope(root, insideMiddleOnly), middle);

  const insideRootOnly = { range: [50, 60] };
  assert.equal(getInnermostScope(root, insideRootOnly), root);
}

// 4. isParenthesized verifies if an AST node is wrapped in one or more pairs of parentheses, throwing TypeError for non-positive repetition counts
{
  const targetNode = {
    type: 'Identifier',
    name: 'foo',
    parent: { type: 'ExpressionStatement' }
  };

  const lParen1 = { type: 'Punctuator', value: '(' };
  const rParen1 = { type: 'Punctuator', value: ')' };
  const lParen2 = { type: 'Punctuator', value: '(' };
  const rParen2 = { type: 'Punctuator', value: ')' };

  const singleParenSourceCode = {
    getTokenBefore(n) {
      if (n === targetNode) return lParen1;
      return null;
    },
    getTokenAfter(n) {
      if (n === targetNode) return rParen1;
      return null;
    }
  };

  assert.equal(isParenthesized(targetNode, singleParenSourceCode), true);
  assert.equal(isParenthesized(1, targetNode, singleParenSourceCode), true);
  assert.equal(isParenthesized(2, targetNode, singleParenSourceCode), false);

  const doubleParenSourceCode = {
    getTokenBefore(n) {
      if (n === targetNode) return lParen1;
      if (n === lParen1) return lParen2;
      return null;
    },
    getTokenAfter(n) {
      if (n === targetNode) return rParen1;
      if (n === rParen1) return rParen2;
      return null;
    }
  };

  assert.equal(isParenthesized(2, targetNode, doubleParenSourceCode), true);

  const noParenSourceCode = {
    getTokenBefore() { return null; },
    getTokenAfter() { return null; }
  };
  assert.equal(isParenthesized(targetNode, noParenSourceCode), false);

  assert.throws(
    () => isParenthesized(0, targetNode, singleParenSourceCode),
    TypeError
  );
}

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

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