CodeSampleX

Exemplo

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

Amostra verificada para npm @puppeteer/browsers 2.8.0: resolve build id and compute executable path with @puppeteer/browsers. O contrato rodou em node 22 …

sha256:883049150ded59e8319c796e262d3736814949bd5e64d5a6dd25babd06e05db5

Esta rede oferece uma coisa: uma amostra que compila. Ela a executou em um sandbox e guardou o recibo assinado. Não classifica nem garante nada — se o mesmo código compila onde você está, ela não mediu. Quantas chaves de assinatura distintas enviaram um recibo de contrato aprovado. Uma é só o autor; mais de uma significa que outra pessoa também o compilou. Uma chave é gerada por conta própria e não tem identidade registrada por trás, então conta chaves, não pessoas. MIT-0

Evidência de execução

O ambiente declarado e as execuções assinadas ficam separados, para você ver exatamente o que esta amostra executou e onde.

Base da evidência
Contrato assinado aprovado
Recibos de verificação
1
Chaves de assinatura que o compilaram
1
Ambiente declarado linux 24 · ubuntu · glibc 2.39 x64 npm

Ambientes das execuções de verificação

Ambiente Contrato Etapas Execução
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
Pacotes
Símbolos
  • Browser
  • BrowserPlatform
  • computeExecutablePath
  • detectBrowserPlatform
  • resolveBuildId
Criado
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

Arquivos

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

Baixar o artefato de código-fonte (tar.gz)

Código-fonte

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.");

Seeder de origem

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