@tiptap/pm 3.11.0: PluginKey

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 @tiptap/pm.PluginKey in pkg:npm/%40tiptap/pm@3.11.0
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/%40tiptap/pm@3.11.0
Demonstrate these symbols/APIs:
  - @tiptap/pm.PluginKey

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.

{"case":{"caseId":"case:sha256:7a60c335145dcf8bcf6813499c0b48e1267c947b76c7fc226f921b82970eac51","contract":["PluginKey constructor creates an instance with a unique key string","PluginKey retrieves plugin state from an EditorState initialized with that plugin","PluginKey retrieves the Plugin instance from an EditorState","PluginKey returns undefined for state and plugin when not present in EditorState","PluginKey stores and retrieves transaction metadata via setMeta and getMeta","EditorState throws RangeError when multiple plugin instances use the same PluginKey"],"goal":"verify @tiptap/pm.PluginKey in pkg:npm/%40tiptap/pm@3.11.0","kind":"HOW","packages":["pkg:npm/%40tiptap/pm@3.11.0"],"schemaVersion":1,"symbols":["@tiptap/pm.PluginKey"]},"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/%40tiptap/pm@3.11.0"],"schemaVersion":1,"subject":"pkg:npm/%40tiptap/pm@3.11.0","symbols":["@tiptap/pm.PluginKey"],"verifierAdapter":"node-typescript@1"}

import { PluginKey, Plugin, EditorState } from '@tiptap/pm/state';
import { schema } from '@tiptap/pm/schema-basic';

export { PluginKey, Plugin, EditorState, schema };
export default PluginKey;

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    "node_modules/w3c-keyname": {
      "version": "2.2.8",
      "resolved": "https://registry.npmjs.org/w3c-keyname/-/w3c-keyname-2.2.8.tgz",
      "integrity": "sha512-dpojBhNsCNN7T82Tm7k26A6G9ML3NkhDsnw9n/eoxSRlVBB4CEtIQ/KTCLI2Fwf3ataSXRhYFkQi3SlnFwPvPQ==",
      "license": "MIT"
    }
  }
}

{
  "name": "sample-tiptap-pm-pluginkey",
  "version": "1.0.0",
  "type": "module",
  "private": true,
  "dependencies": {
    "@tiptap/pm": "3.11.0"
  }
}

{
  "schemaVersion": 1,
  "goal": "verify @tiptap/pm.PluginKey in pkg:npm/%40tiptap/pm@3.11.0",
  "kind": "HOW",
  "packages": [
    "pkg:npm/%40tiptap/pm@3.11.0"
  ],
  "symbols": [
    "@tiptap/pm.PluginKey"
  ]
}

import assert from 'node:assert/strict';
import { PluginKey, Plugin, EditorState, schema } from '../index.mjs';

// 1. PluginKey constructor creates an instance with a unique key string
{
  const namedKey = new PluginKey('testPlugin');
  assert.ok(namedKey instanceof PluginKey);
  assert.equal(typeof namedKey.key, 'string');
  assert.ok(namedKey.key.startsWith('testPlugin$'));

  const anonKey = new PluginKey();
  assert.ok(anonKey instanceof PluginKey);
  assert.equal(typeof anonKey.key, 'string');
  assert.ok(anonKey.key.startsWith('key$'));
}

// 2. PluginKey retrieves plugin state from an EditorState initialized with that plugin
{
  const key = new PluginKey('counter');
  const plugin = new Plugin({
    key,
    state: {
      init() { return { count: 42 }; },
      apply(tr, value) { return tr.docChanged ? { count: value.count + 1 } : value; }
    }
  });
  const state = EditorState.create({ schema, plugins: [plugin] });
  assert.deepEqual(key.getState(state), { count: 42 });

  const tr = state.tr.insertText('hello');
  const nextState = state.apply(tr);
  assert.deepEqual(key.getState(nextState), { count: 43 });
}

// 3. PluginKey retrieves the Plugin instance from an EditorState
{
  const key = new PluginKey('myPlugin');
  const plugin = new Plugin({ key });
  const state = EditorState.create({ schema, plugins: [plugin] });
  assert.equal(key.get(state), plugin);
}

// 4. PluginKey returns undefined for state and plugin when not present in EditorState
{
  const unattachedKey = new PluginKey('detached');
  const state = EditorState.create({ schema, plugins: [] });
  assert.equal(unattachedKey.getState(state), undefined);
  assert.equal(unattachedKey.get(state), undefined);
}

// 5. PluginKey stores and retrieves transaction metadata via setMeta and getMeta
{
  const key = new PluginKey('audit');
  const state = EditorState.create({ schema });
  const tr = state.tr.setMeta(key, { user: 'tester', timestamp: 12345 });
  assert.deepEqual(tr.getMeta(key), { user: 'tester', timestamp: 12345 });
  assert.deepEqual(tr.getMeta(key.key), { user: 'tester', timestamp: 12345 });
}

// 6. EditorState throws RangeError when multiple plugin instances use the same PluginKey
{
  const sharedKey = new PluginKey('shared');
  const p1 = new Plugin({ key: sharedKey });
  const p2 = new Plugin({ key: sharedKey });
  assert.throws(
    () => EditorState.create({ schema, plugins: [p1, p2] }),
    { name: 'RangeError' }
  );
}

console.log('All @tiptap/pm.PluginKey contract assertions passed.');