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jest-watcher 29.7.0: KEYS

검증된 샘플 — npm jest-watcher 29.7.0: KEYS. node 22 · linux debian/x64 · docker에서 contract를 실행해 통과했습니다: KEYS exports ANSI escape sequences for arrow keys…

sha256:7fd9e9d60bd5d8e28f1a99fa8071f0c06d56c8edca3c215e012c47d8fd7840d0

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실행 증거

선언된 환경과 서명된 실행을 분리해 두었습니다. 이 샘플이 무엇을 어디서 실행했는지 그대로 볼 수 있습니다.

증거 기준
서명된 컨트랙트 통과
검증 영수증
1
빌드한 서명 키
1
선언된 환경 linux 24 · ubuntu · glibc 2.39 x64 npm

검증 실행 환경

환경 컨트랙트 단계 실행일
node 22 · linux debian/x64 · docker ed25519:c1973797be207ac4 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · node-typescript@1node:22@sha256:8a34c4ab3ea2…		 2026-09-05

케이스

HOW
목표
verify jest-watcher.KEYS in pkg:npm/jest-watcher@29.7.0
패키지
심벌
  • jest-watcher.KEYS
생성일
2026-09-05T19:08:32Z

컨트랙트

  1. KEYS exports ANSI escape sequences for arrow keys (ARROW_UP, ARROW_DOWN, ARROW_LEFT, ARROW_RIGHT)
  2. KEYS exports standard control characters (ENTER, ESCAPE, CONTROL_C, CONTROL_D, CONTROL_U)
  3. KEYS exports BACKSPACE character buffer decoded as 0x7F on POSIX and 0x08 on Windows
  4. KEYS defines an exact set of 10 standard terminal key codes as non-empty strings
  5. Prompt handles KEYS.ENTER to submit input and exit entering state
  6. Prompt handles KEYS.ESCAPE to cancel input and exit entering state
  7. Prompt handles KEYS.BACKSPACE to delete characters and KEYS.CONTROL_U to clear entire line
  8. Prompt handles KEYS.ARROW_UP and KEYS.ARROW_DOWN to change selection offset within prompt bounds

파일

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

소스 아티팩트 내려받기 (tar.gz)

소스

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-watcher.KEYS in pkg:npm/jest-watcher@29.7.0
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/jest-watcher@29.7.0
Demonstrate these symbols/APIs:
  - jest-watcher.KEYS

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:sha256:00f2df5c0db7bb79932edc610ac6ccb56477b6ef7a72c1d74f58942b71462ee6","contract":["KEYS exports ANSI escape sequences for arrow keys (ARROW_UP, ARROW_DOWN, ARROW_LEFT, ARROW_RIGHT)","KEYS exports standard control characters (ENTER, ESCAPE, CONTROL_C, CONTROL_D, CONTROL_U)","KEYS exports BACKSPACE character buffer decoded as 0x7F on POSIX and 0x08 on Windows","KEYS defines an exact set of 10 standard terminal key codes as non-empty strings","Prompt handles KEYS.ENTER to submit input and exit entering state","Prompt handles KEYS.ESCAPE to cancel input and exit entering state","Prompt handles KEYS.BACKSPACE to delete characters and KEYS.CONTROL_U to clear entire line","Prompt handles KEYS.ARROW_UP and KEYS.ARROW_DOWN to change selection offset within prompt bounds"],"goal":"verify jest-watcher.KEYS in pkg:npm/jest-watcher@29.7.0","kind":"HOW","packages":["pkg:npm/jest-watcher@29.7.0"],"schemaVersion":1,"symbols":["jest-watcher.KEYS"]},"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/jest-watcher@29.7.0"],"schemaVersion":1,"subject":"pkg:npm/jest-watcher@29.7.0","symbols":["jest-watcher.KEYS"],"verifierAdapter":"node-typescript@1"}
package-lock.json
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package.json
{
  "name": "verify-jest-watcher-keys",
  "version": "1.0.0",
  "type": "module",
  "private": true,
  "license": "MIT-0",
  "scripts": {
    "test": "node test/contract.mjs"
  },
  "dependencies": {
    "jest-watcher": "29.7.0"
  }
}
spec.json
{
  "schemaVersion": 1,
  "goal": "verify jest-watcher.KEYS in pkg:npm/jest-watcher@29.7.0",
  "kind": "HOW",
  "packages": [
    "pkg:npm/jest-watcher@29.7.0"
  ],
  "symbols": [
    "jest-watcher.KEYS"
  ]
}
src/index.mjs
import { KEYS, Prompt } from 'jest-watcher';

/**
 * Returns the key name for a given key string/sequence if recognized in KEYS.
 * @param {string} char
 * @returns {string|null}
 */
export function getKeyName(char) {
  for (const [name, seq] of Object.entries(KEYS)) {
    if (seq === char) {
      return name;
    }
  }
  return null;
}

/**
 * Checks if a key sequence is an arrow navigation key.
 * @param {string} key
 * @returns {boolean}
 */
export function isArrowKey(key) {
  return (
    key === KEYS.ARROW_UP ||
    key === KEYS.ARROW_DOWN ||
    key === KEYS.ARROW_LEFT ||
    key === KEYS.ARROW_RIGHT
  );
}

/**
 * Checks if a key sequence is a control action key (ENTER, ESCAPE, CONTROL_C, CONTROL_D, CONTROL_U).
 * @param {string} key
 * @returns {boolean}
 */
export function isControlKey(key) {
  return (
    key === KEYS.ENTER ||
    key === KEYS.ESCAPE ||
    key === KEYS.CONTROL_C ||
    key === KEYS.CONTROL_D ||
    key === KEYS.CONTROL_U
  );
}

/**
 * Simulates typing a sequence of keys into a Jest Watcher Prompt.
 * @param {Prompt} prompt
 * @param {Iterable<string>} keys
 */
export function feedKeys(prompt, keys) {
  for (const key of keys) {
    prompt.put(key);
  }
}

export { KEYS, Prompt };
export default KEYS;
test/contract.mjs
import assert from 'node:assert/strict';
import { KEYS, Prompt } from 'jest-watcher';
import { getKeyName, isArrowKey, isControlKey, feedKeys } from '../src/index.mjs';

// 1. KEYS exports ANSI escape sequences for arrow keys (ARROW_UP, ARROW_DOWN, ARROW_LEFT, ARROW_RIGHT)
{
  assert.equal(KEYS.ARROW_UP, '\x1b[A');
  assert.equal(KEYS.ARROW_DOWN, '\x1b[B');
  assert.equal(KEYS.ARROW_RIGHT, '\x1b[C');
  assert.equal(KEYS.ARROW_LEFT, '\x1b[D');

  assert.equal(isArrowKey(KEYS.ARROW_UP), true);
  assert.equal(isArrowKey(KEYS.ARROW_DOWN), true);
  assert.equal(isArrowKey(KEYS.ARROW_LEFT), true);
  assert.equal(isArrowKey(KEYS.ARROW_RIGHT), true);
  assert.equal(isArrowKey(KEYS.ENTER), false);
}

// 2. KEYS exports standard control characters (ENTER, ESCAPE, CONTROL_C, CONTROL_D, CONTROL_U)
{
  assert.equal(KEYS.ENTER, '\r');
  assert.equal(KEYS.ESCAPE, '\x1b');
  assert.equal(KEYS.CONTROL_C, '\x03');
  assert.equal(KEYS.CONTROL_D, '\x04');
  assert.equal(KEYS.CONTROL_U, '\x15');

  assert.equal(isControlKey(KEYS.ENTER), true);
  assert.equal(isControlKey(KEYS.ESCAPE), true);
  assert.equal(isControlKey(KEYS.CONTROL_C), true);
  assert.equal(isControlKey(KEYS.CONTROL_D), true);
  assert.equal(isControlKey(KEYS.CONTROL_U), true);
  assert.equal(isControlKey(KEYS.ARROW_UP), false);
}

// 3. KEYS exports BACKSPACE character buffer decoded as 0x7F on POSIX and 0x08 on Windows
{
  const expectedBackspace = process.platform === 'win32' ? '\x08' : '\x7f';
  assert.equal(KEYS.BACKSPACE, expectedBackspace);
  assert.equal(getKeyName(KEYS.BACKSPACE), 'BACKSPACE');
}

// 4. KEYS defines an exact set of 10 standard terminal key codes as non-empty strings
{
  const expectedKeys = [
    'ARROW_DOWN',
    'ARROW_LEFT',
    'ARROW_RIGHT',
    'ARROW_UP',
    'BACKSPACE',
    'CONTROL_C',
    'CONTROL_D',
    'CONTROL_U',
    'ENTER',
    'ESCAPE'
  ];
  assert.deepEqual(Object.keys(KEYS).sort(), expectedKeys.sort());

  for (const [keyName, value] of Object.entries(KEYS)) {
    assert.equal(typeof value, 'string');
    assert.ok(value.length > 0);
    assert.equal(getKeyName(value), keyName);
  }
}

// 5. Prompt handles KEYS.ENTER to submit input and exit entering state
{
  const prompt = new Prompt();
  let submitted = null;
  prompt.enter(
    () => {},
    (val) => { submitted = val; },
    () => {}
  );
  assert.equal(prompt.isEntering(), true);

  feedKeys(prompt, ['t', 'e', 's', 't', KEYS.ENTER]);

  assert.equal(submitted, 'test');
  assert.equal(prompt.isEntering(), false);
}

// 6. Prompt handles KEYS.ESCAPE to cancel input and exit entering state
{
  const prompt = new Prompt();
  let cancelled = null;
  prompt.enter(
    () => {},
    () => {},
    (val) => { cancelled = val; }
  );
  assert.equal(prompt.isEntering(), true);

  feedKeys(prompt, ['f', 'i', 'l', 't', 'e', 'r', KEYS.ESCAPE]);

  assert.equal(cancelled, 'filter');
  assert.equal(prompt.isEntering(), false);
}

// 7. Prompt handles KEYS.BACKSPACE to delete characters and KEYS.CONTROL_U to clear entire line
{
  const prompt = new Prompt();
  let currentPattern = '';
  prompt.enter(
    (pattern) => { currentPattern = pattern; },
    () => {},
    () => {}
  );

  feedKeys(prompt, ['f', 'o', 'o', 'b', 'a', 'r']);
  assert.equal(currentPattern, 'foobar');

  prompt.put(KEYS.BACKSPACE);
  assert.equal(currentPattern, 'fooba');

  prompt.put(KEYS.CONTROL_U);
  assert.equal(currentPattern, '');
}

// 8. Prompt handles KEYS.ARROW_UP and KEYS.ARROW_DOWN to change selection offset within prompt bounds
{
  const prompt = new Prompt();
  let currentOffset = null;
  prompt.enter(
    (pattern, options) => { currentOffset = options.offset; },
    () => {},
    () => {}
  );
  prompt.setPromptLength(3);
  assert.equal(currentOffset, -1);

  prompt.put(KEYS.ARROW_DOWN);
  assert.equal(currentOffset, 0);

  prompt.put(KEYS.ARROW_DOWN);
  assert.equal(currentOffset, 1);

  prompt.put(KEYS.ARROW_DOWN);
  assert.equal(currentOffset, 2);

  // Clamped to max offset (promptLength - 1)
  prompt.put(KEYS.ARROW_DOWN);
  assert.equal(currentOffset, 2);

  prompt.put(KEYS.ARROW_UP);
  assert.equal(currentOffset, 1);

  prompt.put(KEYS.ARROW_UP);
  assert.equal(currentOffset, 0);

  // Decrements to -1 (no selection)
  prompt.put(KEYS.ARROW_UP);
  assert.equal(currentOffset, -1);

  // Clamped to -1
  prompt.put(KEYS.ARROW_UP);
  assert.equal(currentOffset, -1);
}

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

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