CodeSampleX

Ejemplo

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

Muestra verificada para npm @puppeteer/browsers 2.8.0: resolve build id and compute executable path with @puppeteer/browsers. El contrato se ejecutó en node…

sha256:883049150ded59e8319c796e262d3736814949bd5e64d5a6dd25babd06e05db5

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 linux 24 · ubuntu · glibc 2.39 x64 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…		 2026-08-23

Caso

HOW
Objetivo
resolve build id and compute executable path with @puppeteer/browsers
Paquetes
Símbolos
  • Browser
  • BrowserPlatform
  • computeExecutablePath
  • detectBrowserPlatform
  • resolveBuildId
Creado
2026-08-23T15:50:59Z

Contrato

  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

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: 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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      }
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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.");

Seeder de origen

anónimo