CodeSampleX

Exemple

@puppeteer/browsers 2.8.0: resolve build id and compute executable path with @puppeteer/browsers

Échantillon vérifié pour npm @puppeteer/browsers 2.8.0: resolve build id and compute executable path with @puppeteer/browsers. Le contrat s'est exécuté sur…

sha256:883049150ded59e8319c796e262d3736814949bd5e64d5a6dd25babd06e05db5

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
resolve build id and compute executable path with @puppeteer/browsers
Paquets
Symboles
  • Browser
  • BrowserPlatform
  • computeExecutablePath
  • detectBrowserPlatform
  • resolveBuildId
Créé
2026-08-23T15:50:59Z

Contrat

  1. assert Browser and BrowserPlatform define valid identifiers for browsers and platforms
  2. assert detectBrowserPlatform identifies the current execution platform
  3. assert computeExecutablePath calculates correct relative executable paths for Chrome, Firefox, and ChromeDriver across platforms
  4. assert resolveBuildId resolves build and version identifiers offline without network requests

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: resolve build id and compute executable path with @puppeteer/browsers
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/%40puppeteer/browsers@2.8.0
Demonstrate these symbols/APIs:
  - Browser
  - BrowserPlatform
  - computeExecutablePath
  - detectBrowserPlatform
  - resolveBuildId

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:sha256:3e582f8807dbca5bc7469050ecef64310cefc78708ddac8c62ead6c971348719","contract":["assert Browser and BrowserPlatform define valid identifiers for browsers and platforms","assert detectBrowserPlatform identifies the current execution platform","assert computeExecutablePath calculates correct relative executable paths for Chrome, Firefox, and ChromeDriver across platforms","assert resolveBuildId resolves build and version identifiers offline without network requests"],"goal":"resolve build id and compute executable path with @puppeteer/browsers","kind":"HOW","packages":["pkg:npm/%40puppeteer/browsers@2.8.0"],"schemaVersion":1,"symbols":["Browser","BrowserPlatform","computeExecutablePath","detectBrowserPlatform","resolveBuildId"]},"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/%40puppeteer/browsers@2.8.0"],"schemaVersion":1,"subject":"pkg:npm/%40puppeteer/browsers@2.8.0","symbols":["Browser","BrowserPlatform","computeExecutablePath","detectBrowserPlatform","resolveBuildId"],"verifierAdapter":"node-typescript@1"}
package-lock.json
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package.json
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spec.json
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  "kind": "HOW",
  "packages": [
    "pkg:npm/%40puppeteer/browsers@2.8.0"
  ],
  "symbols": [
    "Browser",
    "BrowserPlatform",
    "computeExecutablePath",
    "detectBrowserPlatform",
    "resolveBuildId"
  ]
}
test/contract.mjs
import assert from "node:assert/strict";
import {
  Browser,
  BrowserPlatform,
  computeExecutablePath,
  detectBrowserPlatform,
  resolveBuildId,
} from "@puppeteer/browsers";

// Contract 1: Browser and BrowserPlatform define valid identifiers for browsers and platforms
assert.equal(Browser.CHROME, "chrome");
assert.equal(Browser.FIREFOX, "firefox");
assert.equal(Browser.CHROMIUM, "chromium");
assert.equal(Browser.CHROMEDRIVER, "chromedriver");
assert.equal(Browser.CHROMEHEADLESSSHELL, "chrome-headless-shell");

assert.equal(BrowserPlatform.LINUX, "linux");
assert.equal(BrowserPlatform.LINUX_ARM, "linux_arm");
assert.equal(BrowserPlatform.MAC, "mac");
assert.equal(BrowserPlatform.MAC_ARM, "mac_arm");
assert.equal(BrowserPlatform.WIN32, "win32");
assert.equal(BrowserPlatform.WIN64, "win64");

// Contract 2: detectBrowserPlatform identifies the current execution platform
const currentPlatform = detectBrowserPlatform();
assert.ok(typeof currentPlatform === "string");
assert.ok(Object.values(BrowserPlatform).includes(currentPlatform));

// Contract 3: computeExecutablePath calculates correct relative executable paths for Chrome, Firefox, and ChromeDriver across platforms
const chromeLinuxPath = computeExecutablePath({
  browser: Browser.CHROME,
  buildId: "123.0.6312.86",
  cacheDir: "./local-cache",
  platform: BrowserPlatform.LINUX,
});
assert.equal(
  chromeLinuxPath,
  "local-cache/chrome/linux-123.0.6312.86/chrome-linux64/chrome"
);

const chromeWinPath = computeExecutablePath({
  browser: Browser.CHROME,
  buildId: "123.0.6312.86",
  cacheDir: "./local-cache",
  platform: BrowserPlatform.WIN64,
});
assert.equal(
  chromeWinPath,
  "local-cache/chrome/win64-123.0.6312.86/chrome-win64/chrome.exe"
);

const firefoxLinuxPath = computeExecutablePath({
  browser: Browser.FIREFOX,
  buildId: "125.0",
  cacheDir: "./local-cache",
  platform: BrowserPlatform.LINUX,
});
assert.equal(
  firefoxLinuxPath,
  "local-cache/firefox/linux-125.0/firefox/firefox"
);

const driverLinuxPath = computeExecutablePath({
  browser: Browser.CHROMEDRIVER,
  buildId: "123.0.6312.86",
  cacheDir: "./local-cache",
  platform: BrowserPlatform.LINUX,
});
assert.equal(
  driverLinuxPath,
  "local-cache/chromedriver/linux-123.0.6312.86/chromedriver-linux64/chromedriver"
);

const headlessShellLinuxPath = computeExecutablePath({
  browser: Browser.CHROMEHEADLESSSHELL,
  buildId: "123.0.6312.86",
  cacheDir: "./local-cache",
  platform: BrowserPlatform.LINUX,
});
assert.equal(
  headlessShellLinuxPath,
  "local-cache/chrome-headless-shell/linux-123.0.6312.86/chrome-headless-shell-linux64/chrome-headless-shell"
);

// Contract 4: resolveBuildId resolves build and version identifiers offline without network requests
const resolvedFirefox = await resolveBuildId(
  Browser.FIREFOX,
  BrowserPlatform.LINUX,
  "125.0"
);
assert.equal(resolvedFirefox, "125.0");

const resolvedChromium = await resolveBuildId(
  Browser.CHROMIUM,
  BrowserPlatform.LINUX,
  "1234567"
);
assert.equal(resolvedChromium, "1234567");

const resolvedChrome = await resolveBuildId(
  Browser.CHROME,
  BrowserPlatform.LINUX,
  "123.0.6312.86"
);
assert.equal(resolvedChrome, "123.0.6312.86");

console.log("Contract verified: all assertions passed.");

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