CodeSampleX

Exemple

pac-proxy-agent 7.2.0

Échantillon vérifié pour npm pac-proxy-agent 7.2.0. Le contrat s'est exécuté sur node 22 · linux alpine/x64 · docker et a réussi.

sha256:a1b8df0050a6af0be069a311057a7a2b0db0d267495550244072995aa85b835c

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 linux 24 · ubuntu · glibc 2.39 x64 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@1node:22-alpine@sha256:c610fcdfb1d5…		 2026-08-23

Cas

HOW
Objectif
verify pkg:npm/pac-proxy-agent@7.2.0
Paquets
Créé
2026-08-23T15:29:44Z

Contrat

  1. PacProxyAgent static protocols property includes supported PAC protocol schemes
  2. PacProxyAgent constructor initializes agent instance with data URI string
  3. getResolver compiles and returns a FindProxyForURL resolver function
  4. resolver routes plain hostnames to DIRECT when configured by PAC script
  5. resolver evaluates dnsDomainIs and returns designated internal proxy
  6. resolver evaluates shExpMatch wildcard and returns designated secure proxy
  7. resolver returns fallback proxy chain for unmatched external destinations
  8. PacProxyAgent constructor accepts WHATWG URL instance and custom options

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/pac-proxy-agent@7.2.0
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/pac-proxy-agent@7.2.0

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:sha256:1a9efc66f8c06adf41350aedff9c3d5fd7b729af5e3cb04f96460124cceb5e02","contract":["PacProxyAgent static protocols property includes supported PAC protocol schemes","PacProxyAgent constructor initializes agent instance with data URI string","getResolver compiles and returns a FindProxyForURL resolver function","resolver routes plain hostnames to DIRECT when configured by PAC script","resolver evaluates dnsDomainIs and returns designated internal proxy","resolver evaluates shExpMatch wildcard and returns designated secure proxy","resolver returns fallback proxy chain for unmatched external destinations","PacProxyAgent constructor accepts WHATWG URL instance and custom options"],"goal":"verify pkg:npm/pac-proxy-agent@7.2.0","kind":"HOW","packages":["pkg:npm/pac-proxy-agent@7.2.0"],"schemaVersion":1},"contractCommand":["node","test/contract.mjs"],"environment":{"arch":"x64","distro":"ubuntu","ecosystem":"npm","libc":"glibc","libcVersion":"2.39","os":"linux","osVersionBucket":"24","packageManager":"npm","schemaVersion":1},"license":"MIT-0","packages":["pkg:npm/pac-proxy-agent@7.2.0"],"schemaVersion":1,"subject":"pkg:npm/pac-proxy-agent@7.2.0","verifierAdapter":"node-typescript@1"}
package-lock.json
{
  "name": "sample-pac-proxy-agent",
  "version": "1.0.0",
  "lockfileVersion": 3,
  "requires": true,
  "packages": {
    "": {
      "name": "sample-pac-proxy-agent",
      "version": "1.0.0",
      "dependencies": {
        "pac-proxy-agent": "7.2.0"
      }
    },
    "node_modules/@tootallnate/quickjs-emscripten": {
      "version": "0.23.0",
      "resolved": "https://registry.npmjs.org/@tootallnate/quickjs-emscripten/-/quickjs-emscripten-0.23.0.tgz",
      "integrity": "sha512-C5Mc6rdnsaJDjO3UpGW/CQTHtCKaYlScZTly4JIu97Jxo/odCiH0ITnDXSJPTOrEKk/ycSZ0AOgTmkDtkOsvIA==",
      "license": "MIT"
    },
    "node_modules/agent-base": {
      "version": "7.1.4",
      "resolved": "https://registry.npmjs.org/agent-base/-/agent-base-7.1.4.tgz",
      "integrity": "sha512-MnA+YT8fwfJPgBx3m60MNqakm30XOkyIoH1y6huTQvC0PwZG7ki8NacLBcrPbNoo8vEZy7Jpuk7+jMO+CUovTQ==",
      "license": "MIT",
      "engines": {
        "node": ">= 14"
      }
    },
    "node_modules/ast-types": {
      "version": "0.13.4",
      "resolved": "https://registry.npmjs.org/ast-types/-/ast-types-0.13.4.tgz",
      "integrity": "sha512-x1FCFnFifvYDDzTaLII71vG5uvDwgtmDTEVWAxrgeiR8VjMONcCXJx7E+USjDtHlwFmt9MysbqgF9b9Vjr6w+w==",
      "license": "MIT",
      "dependencies": {
        "tslib": "^2.0.1"
      },
      "engines": {
        "node": ">=4"
      }
    },
    "node_modules/basic-ftp": {
      "version": "5.3.1",
      "resolved": "https://registry.npmjs.org/basic-ftp/-/basic-ftp-5.3.1.tgz",
      "integrity": "sha512-bopVNp6ugyA150DDuZfPFdt1KZ5a94ZDiwX4hMgZDzF+GttD80lEy8kj98kbyhLXnPvhtIo93mdnLIjpCAeeOw==",
      "license": "MIT",
      "engines": {
        "node": ">=10.0.0"
      }
    },
    "node_modules/data-uri-to-buffer": {
      "version": "6.0.2",
      "resolved": "https://registry.npmjs.org/data-uri-to-buffer/-/data-uri-to-buffer-6.0.2.tgz",
      "integrity": "sha512-7hvf7/GW8e86rW0ptuwS3OcBGDjIi6SZva7hCyWC0yYry2cOPmLIjXAUHI6DK2HsnwJd9ifmt57i8eV2n4YNpw==",
      "license": "MIT",
      "engines": {
        "node": ">= 14"
      }
    },
    "node_modules/debug": {
      "version": "4.4.3",
      "resolved": "https://registry.npmjs.org/debug/-/debug-4.4.3.tgz",
      "integrity": "sha512-RGwwWnwQvkVfavKVt22FGLw+xYSdzARwm0ru6DhTVA3umU5hZc28V3kO4stgYryrTlLpuvgI9GiijltAjNbcqA==",
      "license": "MIT",
      "dependencies": {
        "ms": "^2.1.3"
      },
      "engines": {
        "node": ">=6.0"
      },
      "peerDependenciesMeta": {
        "supports-color": {
          "optional": true
        }
      }
    },
    "node_modules/degenerator": {
      "version": "5.0.1",
      "resolved": "https://registry.npmjs.org/degenerator/-/degenerator-5.0.1.tgz",
      "integrity": "sha512-TllpMR/t0M5sqCXfj85i4XaAzxmS5tVA16dqvdkMwGmzI+dXLXnw3J+3Vdv7VKw+ThlTMboK6i9rnZ6Nntj5CQ==",
      "license": "MIT",
      "dependencies": {
        "ast-types": "^0.13.4",
        "escodegen": "^2.1.0",
        "esprima": "^4.0.1"
      },
      "engines": {
        "node": ">= 14"
      }
    },
    "node_modules/escodegen": {
      "version": "2.1.0",
      "resolved": "https://registry.npmjs.org/escodegen/-/escodegen-2.1.0.tgz",
      "integrity": "sha512-2NlIDTwUWJN0mRPQOdtQBzbUHvdGY2P1VXSyU83Q3xKxM7WHX2Ql8dKq782Q9TgQUNOLEzEYu9bzLNj1q88I5w==",
      "license": "BSD-2-Clause",
      "dependencies": {
        "esprima": "^4.0.1",
        "estraverse": "^5.2.0",
        "esutils": "^2.0.2"
      },
      "bin": {
        "escodegen": "bin/escodegen.js",
        "esgenerate": "bin/esgenerate.js"
      },
      "engines": {
        "node": ">=6.0"
      },
      "optionalDependencies": {
        "source-map": "~0.6.1"
      }
    },
    "node_modules/esprima": {
      "version": "4.0.1",
      "resolved": "https://registry.npmjs.org/esprima/-/esprima-4.0.1.tgz",
      "integrity": "sha512-eGuFFw7Upda+g4p+QHvnW0RyTX/SVeJBDM/gCtMARO0cLuT2HcEKnTPvhjV6aGeqrCB/sbNop0Kszm0jsaWU4A==",
      "license": "BSD-2-Clause",
      "bin": {
        "esparse": "bin/esparse.js",
        "esvalidate": "bin/esvalidate.js"
      },
      "engines": {
        "node": ">=4"
      }
    },
    "node_modules/estraverse": {
      "version": "5.3.0",
      "resolved": "https://registry.npmjs.org/estraverse/-/estraverse-5.3.0.tgz",
      "integrity": "sha512-MMdARuVEQziNTeJD8DgMqmhwR11BRQ/cBP+pLtYdSTnf3MIO8fFeiINEbX36ZdNlfU/7A9f3gUw49B3oQsvwBA==",
      "license": "BSD-2-Clause",
      "engines": {
        "node": ">=4.0"
      }
    },
    "node_modules/esutils": {
      "version": "2.0.3",
      "resolved": "https://registry.npmjs.org/esutils/-/esutils-2.0.3.tgz",
      "integrity": "sha512-kVscqXk4OCp68SZ0dkgEKVi6/8ij300KBWTJq32P/dYeWTSwK41WyTxalN1eRmA5Z9UU/LX9D7FWSmV9SAYx6g==",
      "license": "BSD-2-Clause",
      "engines": {
        "node": ">=0.10.0"
      }
    },
    "node_modules/get-uri": {
      "version": "6.0.5",
      "resolved": "https://registry.npmjs.org/get-uri/-/get-uri-6.0.5.tgz",
      "integrity": "sha512-b1O07XYq8eRuVzBNgJLstU6FYc1tS6wnMtF1I1D9lE8LxZSOGZ7LhxN54yPP6mGw5f2CkXY2BQUL9Fx41qvcIg==",
      "license": "MIT",
      "dependencies": {
        "basic-ftp": "^5.0.2",
        "data-uri-to-buffer": "^6.0.2",
        "debug": "^4.3.4"
      },
      "engines": {
        "node": ">= 14"
      }
    },
    "node_modules/http-proxy-agent": {
      "version": "7.0.2",
      "resolved": "https://registry.npmjs.org/http-proxy-agent/-/http-proxy-agent-7.0.2.tgz",
      "integrity": "sha512-T1gkAiYYDWYx3V5Bmyu7HcfcvL7mUrTWiM6yOfa3PIphViJ/gFPbvidQ+veqSOHci/PxBcDabeUNCzpOODJZig==",
      "license": "MIT",
      "dependencies": {
        "agent-base": "^7.1.0",
        "debug": "^4.3.4"
      },
      "engines": {
        "node": ">= 14"
      }
    },
    "node_modules/https-proxy-agent": {
      "version": "7.0.6",
      "resolved": "https://registry.npmjs.org/https-proxy-agent/-/https-proxy-agent-7.0.6.tgz",
      "integrity": "sha512-vK9P5/iUfdl95AI+JVyUuIcVtd4ofvtrOr3HNtM2yxC9bnMbEdp3x01OhQNnjb8IJYi38VlTE3mBXwcfvywuSw==",
      "license": "MIT",
      "dependencies": {
        "agent-base": "^7.1.2",
        "debug": "4"
      },
      "engines": {
        "node": ">= 14"
      }
    },
    "node_modules/ip-address": {
      "version": "10.5.0",
      "resolved": "https://registry.npmjs.org/ip-address/-/ip-address-10.5.0.tgz",
      "integrity": "sha512-R5SnVLJmgYYvf2F2ZgwSBnelz5G4q5AxIC277GDfUaNbrZKNANcBC7RHqYYePlszf4kBolVkJauG0ZjHHFh55g==",
      "license": "MIT",
      "engines": {
        "node": ">= 12"
      }
    },
    "node_modules/ms": {
      "version": "2.1.3",
      "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.3.tgz",
      "integrity": "sha512-6FlzubTLZG3J2a/NVCAleEhjzq5oxgHyaCU9yYXvcLsvoVaHJq/s5xXI6/XXP6tz7R9xAOtHnSO/tXtF3WRTlA==",
      "license": "MIT"
    },
    "node_modules/netmask": {
      "version": "2.1.1",
      "resolved": "https://registry.npmjs.org/netmask/-/netmask-2.1.1.tgz",
      "integrity": "sha512-eonl3sLUha+S1GzTPxychyhnUzKyeQkZ7jLjKrBagJgPla13F+uQ71HgpFefyHgqrjEbCPkDArxYsjY8/+gLKA==",
      "license": "MIT",
      "engines": {
        "node": ">= 0.4.0"
      }
    },
    "node_modules/pac-proxy-agent": {
      "version": "7.2.0",
      "resolved": "https://registry.npmjs.org/pac-proxy-agent/-/pac-proxy-agent-7.2.0.tgz",
      "integrity": "sha512-TEB8ESquiLMc0lV8vcd5Ql/JAKAoyzHFXaStwjkzpOpC5Yv+pIzLfHvjTSdf3vpa2bMiUQrg9i6276yn8666aA==",
      "license": "MIT",
      "dependencies": {
        "@tootallnate/quickjs-emscripten": "^0.23.0",
        "agent-base": "^7.1.2",
        "debug": "^4.3.4",
        "get-uri": "^6.0.1",
        "http-proxy-agent": "^7.0.0",
        "https-proxy-agent": "^7.0.6",
        "pac-resolver": "^7.0.1",
        "socks-proxy-agent": "^8.0.5"
      },
      "engines": {
        "node": ">= 14"
      }
    },
    "node_modules/pac-resolver": {
      "version": "7.0.1",
      "resolved": "https://registry.npmjs.org/pac-resolver/-/pac-resolver-7.0.1.tgz",
      "integrity": "sha512-5NPgf87AT2STgwa2ntRMr45jTKrYBGkVU36yT0ig/n/GMAa3oPqhZfIQ2kMEimReg0+t9kZViDVZ83qfVUlckg==",
      "license": "MIT",
      "dependencies": {
        "degenerator": "^5.0.0",
        "netmask": "^2.0.2"
      },
      "engines": {
        "node": ">= 14"
      }
    },
    "node_modules/smart-buffer": {
      "version": "4.2.0",
      "resolved": "https://registry.npmjs.org/smart-buffer/-/smart-buffer-4.2.0.tgz",
      "integrity": "sha512-94hK0Hh8rPqQl2xXc3HsaBoOXKV20MToPkcXvwbISWLEs+64sBq5kFgn2kJDHb1Pry9yrP0dxrCI9RRci7RXKg==",
      "license": "MIT",
      "engines": {
        "node": ">= 6.0.0",
        "npm": ">= 3.0.0"
      }
    },
    "node_modules/socks": {
      "version": "2.8.9",
      "resolved": "https://registry.npmjs.org/socks/-/socks-2.8.9.tgz",
      "integrity": "sha512-LJhUYUvItdQ0LkJTmPeaEObWXAqFyfmP85x0tch/ez9cahmhlBBLbIqDFnvBnUJGagb0JbIQrkBs1wJ+yRYpEw==",
      "license": "MIT",
      "dependencies": {
        "ip-address": "^10.1.1",
        "smart-buffer": "^4.2.0"
      },
      "engines": {
        "node": ">= 10.0.0",
        "npm": ">= 3.0.0"
      }
    },
    "node_modules/socks-proxy-agent": {
      "version": "8.0.5",
      "resolved": "https://registry.npmjs.org/socks-proxy-agent/-/socks-proxy-agent-8.0.5.tgz",
      "integrity": "sha512-HehCEsotFqbPW9sJ8WVYB6UbmIMv7kUUORIF2Nncq4VQvBfNBLibW9YZR5dlYCSUhwcD628pRllm7n+E+YTzJw==",
      "license": "MIT",
      "dependencies": {
        "agent-base": "^7.1.2",
        "debug": "^4.3.4",
        "socks": "^2.8.3"
      },
      "engines": {
        "node": ">= 14"
      }
    },
    "node_modules/source-map": {
      "version": "0.6.1",
      "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
      "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==",
      "license": "BSD-3-Clause",
      "optional": true,
      "engines": {
        "node": ">=0.10.0"
      }
    },
    "node_modules/tslib": {
      "version": "2.8.1",
      "resolved": "https://registry.npmjs.org/tslib/-/tslib-2.8.1.tgz",
      "integrity": "sha512-oJFu94HQb+KVduSUQL7wnpmqnfmLsOA/nAh6b6EH0wCEoK0/mPeXU6c3wKDV83MkOuHPRHtSXKKU99IBazS/2w==",
      "license": "0BSD"
    }
  }
}
package.json
{
  "name": "sample-pac-proxy-agent",
  "version": "1.0.0",
  "type": "module",
  "private": true,
  "dependencies": {
    "pac-proxy-agent": "7.2.0"
  }
}
spec.json
{
  "schemaVersion": 1,
  "goal": "verify pkg:npm/pac-proxy-agent@7.2.0",
  "kind": "HOW",
  "packages": [
    "pkg:npm/pac-proxy-agent@7.2.0"
  ]
}
test/contract.mjs
import assert from 'node:assert/strict';
import { PacProxyAgent } from 'pac-proxy-agent';

// 1. PacProxyAgent static protocols property includes supported PAC protocol schemes
assert.ok(Array.isArray(PacProxyAgent.protocols));
assert.ok(PacProxyAgent.protocols.includes('pac+data'));
assert.ok(PacProxyAgent.protocols.includes('pac+file'));
assert.ok(PacProxyAgent.protocols.includes('pac+http'));
assert.ok(PacProxyAgent.protocols.includes('pac+https'));

// 2. PacProxyAgent constructor initializes agent instance with data URI string
const pacScript = `
  function FindProxyForURL(url, host) {
    if (isPlainHostName(host)) {
      return 'DIRECT';
    }
    if (dnsDomainIs(host, '.internal.example.com')) {
      return 'PROXY proxy-int.example.com:8080';
    }
    if (shExpMatch(host, '*.secure.example.com')) {
      return 'HTTPS proxy-sec.example.com:8443';
    }
    return 'PROXY proxy-default.example.com:3128; DIRECT';
  }
`;
const dataUri = `data:text/plain;charset=utf-8,${encodeURIComponent(pacScript)}`;
const agent = new PacProxyAgent(dataUri);

assert.ok(agent instanceof PacProxyAgent);
assert.equal(agent.uri.href, dataUri);

// 3. getResolver compiles and returns a FindProxyForURL resolver function
const resolver = await agent.getResolver();
assert.equal(typeof resolver, 'function');

// 4. resolver routes plain hostnames to DIRECT when configured by PAC script
const resPlain = await resolver('http://localhost/api', 'localhost');
assert.equal(resPlain, 'DIRECT');

// 5. resolver evaluates dnsDomainIs and returns designated internal proxy
const resInternal = await resolver('http://svc.internal.example.com/data', 'svc.internal.example.com');
assert.equal(resInternal, 'PROXY proxy-int.example.com:8080');

// 6. resolver evaluates shExpMatch wildcard and returns designated secure proxy
const resSecure = await resolver('https://auth.secure.example.com/login', 'auth.secure.example.com');
assert.equal(resSecure, 'HTTPS proxy-sec.example.com:8443');

// 7. resolver returns fallback proxy chain for unmatched external destinations
const resDefault = await resolver('http://external.example.com/resource', 'external.example.com');
assert.equal(resDefault, 'PROXY proxy-default.example.com:3128; DIRECT');

// 8. PacProxyAgent constructor accepts WHATWG URL instance and custom options
const pacUrl = new URL(dataUri);
const agentWithOptions = new PacProxyAgent(pacUrl, {
  fallbackToDirect: true,
  keepAlive: true
});
assert.ok(agentWithOptions instanceof PacProxyAgent);
assert.equal(agentWithOptions.opts.fallbackToDirect, true);
assert.equal(agentWithOptions.opts.keepAlive, true);

const resolverWithOptions = await agentWithOptions.getResolver();
const resWithOptions = await resolverWithOptions('http://internal.example.com', 'internal.example.com');
assert.equal(typeof resWithOptions, 'string');

Seeder d'origine

anonyme