示例

@jest/console 29.7.0: getConsoleOutput

已验证示例 — npm @jest/console 29.7.0: getConsoleOutput. contract 在 node 22 · linux alpine/x64 · docker 上运行并通过： BufferedConsole collects log, warn, error entries…

sha256:c9e14f0895e17bbda56d2f5bc6e392c80550ffcbfe6f0bcef47ba3f96f79e445

MIT-0

执行证据

声明的环境与签名的运行分开呈现，你可以看到这个样本究竟运行了什么、在哪里运行。

证据依据: 签名契约通过
验证回执: 1
构建过它的签名密钥: 1

声明的环境 linux 24 · ubuntu · glibc 2.39 x64 npm

验证运行环境

环境	契约	阶段	运行日期
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…	2026-08-26

案例

HOW

目标: verify @jest/console.getConsoleOutput in pkg:npm/%40jest/console@29.7.0
包: @jest/console 29.7.0
符号: @jest/console.getConsoleOutput
创建时间: 2026-08-26T06:50:40Z

契约

BufferedConsole collects log, warn, error entries into a ConsoleBuffer
getConsoleOutput(buffer, config, globalConfig) formats console buffer entries to formatted string output
getConsoleOutput with empty buffer produces a single newline string

文件

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

下载源代码构件 (tar.gz)

源代码

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 @jest/console.getConsoleOutput in pkg:npm/%40jest/console@29.7.0
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/%40jest/console@29.7.0
Demonstrate these symbols/APIs:
  - @jest/console.getConsoleOutput

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:sha256:0e04b8e84adce3003eb97b5664f8c21f8188304a1067cc497214ba18822302c8","contract":["BufferedConsole collects log, warn, error entries into a ConsoleBuffer","getConsoleOutput(buffer, config, globalConfig) formats console buffer entries to formatted string output","getConsoleOutput with empty buffer produces a single newline string"],"goal":"verify @jest/console.getConsoleOutput in pkg:npm/%40jest/console@29.7.0","kind":"HOW","packages":["pkg:npm/%40jest/console@29.7.0"],"schemaVersion":1,"symbols":["@jest/console.getConsoleOutput"]},"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/%40jest/console@29.7.0"],"schemaVersion":1,"subject":"pkg:npm/%40jest/console@29.7.0","symbols":["@jest/console.getConsoleOutput"],"verifierAdapter":"node-typescript@1"}

index.mjs

import { BufferedConsole, getConsoleOutput } from '@jest/console';

export function formatLogs(entries, options = {}) {
  const buffer = entries.map(entry => ({
    type: entry.type || 'log',
    message: entry.message,
    origin: entry.origin || ''
  }));

  const config = {
    rootDir: options.rootDir || process.cwd()
  };

  const globalConfig = {
    verbose: options.verbose ?? true,
    noStackTrace: options.noStackTrace ?? true
  };

  return getConsoleOutput(buffer, config, globalConfig);
}

export { BufferedConsole, getConsoleOutput };

package-lock.json

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      "license": "MIT",
      "engines": {
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      "license": "MIT",
      "dependencies": {
        "escape-string-regexp": "^2.0.0"
      },
      "engines": {
        "node": ">=10"
      }
    },
    "node_modules/supports-color": {
      "version": "7.2.0",
      "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-7.2.0.tgz",
      "integrity": "sha512-qpCAvRl9stuOHveKsn7HncJRvv501qIacKzQlO/+Lwxc9+0q2wLyv4Dfvt80/DPn2pqOBsJdDiogXGR9+OvwRw==",
      "license": "MIT",
      "dependencies": {
        "has-flag": "^4.0.0"
      },
      "engines": {
        "node": ">=8"
      }
    },
    "node_modules/to-regex-range": {
      "version": "5.0.1",
      "resolved": "https://registry.npmjs.org/to-regex-range/-/to-regex-range-5.0.1.tgz",
      "integrity": "sha512-65P7iz6X5yEr1cwcgvQxbbIw7Uk3gOy5dIdtZ4rDveLqhrdJP+Li/Hx6tyK0NEb+2GCyneCMJiGqrADCSNk8sQ==",
      "license": "MIT",
      "dependencies": {
        "is-number": "^7.0.0"
      },
      "engines": {
        "node": ">=8.0"
      }
    },
    "node_modules/undici-types": {
      "version": "8.3.0",
      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-8.3.0.tgz",
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      "license": "MIT"
    }
  }
}

package.json

{
  "name": "sample-jest-console",
  "version": "1.0.0",
  "type": "module",
  "dependencies": {
    "@jest/console": "29.7.0"
  }
}

spec.json

{
  "schemaVersion": 1,
  "goal": "verify @jest/console.getConsoleOutput in pkg:npm/%40jest/console@29.7.0",
  "kind": "HOW",
  "packages": [
    "pkg:npm/%40jest/console@29.7.0"
  ],
  "symbols": [
    "@jest/console.getConsoleOutput"
  ]
}

test/contract.mjs

import assert from 'node:assert';
import { BufferedConsole, getConsoleOutput } from '@jest/console';

// Verify BufferedConsole collects log entries
const bufferedConsole = new BufferedConsole();
bufferedConsole.log('Application started');
bufferedConsole.warn('Deprecated configuration encountered');
bufferedConsole.error('Connection timed out');

const buffer = bufferedConsole.getBuffer();
assert.ok(Array.isArray(buffer), 'buffer should be an array');
assert.strictEqual(buffer.length, 3, 'buffer should contain 3 log entries');

// Configuration for stack trace and formatting
const config = {
  rootDir: process.cwd()
};

const globalConfig = {
  verbose: true,
  noStackTrace: true
};

// getConsoleOutput formats the buffer into a string representation
const output = getConsoleOutput(buffer, config, globalConfig);

assert.strictEqual(typeof output, 'string', 'output should be a string');
assert.ok(output.includes('Application started'), 'output must include log message');
assert.ok(output.includes('console.log'), 'output must include console.log label');
assert.ok(output.includes('Deprecated configuration encountered'), 'output must include warning message');
assert.ok(output.includes('console.warn'), 'output must include console.warn label');
assert.ok(output.includes('Connection timed out'), 'output must include error message');
assert.ok(output.includes('console.error'), 'output must include console.error label');

// Verify getConsoleOutput with empty buffer
const emptyOutput = getConsoleOutput([], config, globalConfig);
assert.strictEqual(emptyOutput, '\n', 'empty buffer produces a single newline');

console.log('Contract test passed successfully.');

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