@tiptap/extension-placeholder 3.11.0

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 pkg:npm/%40tiptap/extension-placeholder@3.11.0
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/%40tiptap/extension-placeholder@3.11.0

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.

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}

{
  "name": "sample-tiptap-extension-placeholder",
  "version": "1.0.0",
  "description": "Clean-room sample verifying @tiptap/extension-placeholder",
  "type": "module",
  "main": "src/index.js",
  "license": "MIT-0",
  "dependencies": {
    "@tiptap/extension-placeholder": "3.11.0"
  }
}

{
  "schemaVersion": 1,
  "goal": "verify pkg:npm/%40tiptap/extension-placeholder@3.11.0",
  "kind": "HOW",
  "packages": [
    "pkg:npm/%40tiptap/extension-placeholder@3.11.0"
  ]
}

import { Placeholder } from '@tiptap/extension-placeholder';

/**
 * Creates a configured Placeholder extension.
 * @param {Record<string, any>} options
 * @returns {any}
 */
export function createPlaceholder(options = {}) {
  return Placeholder.configure(options);
}

/**
 * Extends the Placeholder extension with custom configuration.
 * @param {Record<string, any>} override
 * @returns {any}
 */
export function extendPlaceholder(override = {}) {
  return Placeholder.extend(override);
}

export { Placeholder };
export default Placeholder;

import assert from 'node:assert';
import { Placeholder, default as DefaultPlaceholder } from '@tiptap/extension-placeholder';
import { createPlaceholder, extendPlaceholder } from '../src/index.js';

// 1. Verify Placeholder extension export and metadata
assert.strictEqual(Placeholder.name, 'placeholder', 'extension name must be placeholder');
assert.strictEqual(Placeholder.type, 'extension', 'extension type must be extension');
assert.strictEqual(Placeholder, DefaultPlaceholder, 'default export must equal named export');

// 2. Verify Placeholder.configure sets options with proper defaults
const configured = createPlaceholder({
  placeholder: 'Type something...',
  emptyEditorClass: 'custom-empty-editor',
  emptyNodeClass: 'custom-empty-node',
  showOnlyWhenEditable: false,
});

assert.strictEqual(configured.name, 'placeholder', 'configured name must be placeholder');
assert.strictEqual(configured.options.placeholder, 'Type something...', 'configured placeholder option must match');
assert.strictEqual(configured.options.emptyEditorClass, 'custom-empty-editor', 'custom emptyEditorClass must match');
assert.strictEqual(configured.options.emptyNodeClass, 'custom-empty-node', 'custom emptyNodeClass must match');
assert.strictEqual(configured.options.showOnlyWhenEditable, false, 'showOnlyWhenEditable must match false');
assert.strictEqual(configured.options.showOnlyCurrent, true, 'default showOnlyCurrent must remain true');
assert.strictEqual(configured.options.includeChildren, false, 'default includeChildren must remain false');
assert.strictEqual(configured.options.dataAttribute, 'placeholder', 'default dataAttribute must remain placeholder');

// 3. Verify function-based dynamic placeholder option
const fnPlaceholder = createPlaceholder({
  placeholder: ({ node }) => 'Dynamic placeholder text',
});
assert.strictEqual(typeof fnPlaceholder.options.placeholder, 'function', 'placeholder option should be a function');
assert.strictEqual(
  fnPlaceholder.options.placeholder({}),
  'Dynamic placeholder text',
  'dynamic placeholder function must return expected text'
);

// 4. Verify Placeholder.extend produces custom extension
const extended = extendPlaceholder({
  name: 'customPlaceholder',
});
assert.strictEqual(extended.name, 'customPlaceholder', 'extended extension name must be customPlaceholder');
assert.strictEqual(extended.type, 'extension', 'extended extension type must be extension');

console.log('All @tiptap/extension-placeholder contract assertions passed.');