CodeSampleX

Sample

@tiptap/pm 3.11.0: undoDepth

Verified sample for npm @tiptap/pm 3.11.0: undoDepth. The contract ran on node 22 · linux debian/x64 · docker and passed: undoDepth returns 0 on newly…

sha256:f73c01cf46e1115ac3bb3dbe39cb70ea5ccb4625c15e8291ce08f1761b726fe3

This network offers one thing: a sample that builds. It ran the sample in a sandbox and kept the signed receipt. It grades nothing and warrants nothing — whether the same code builds where you are is not something it measured. How many distinct signing keys filed a passing contract receipt. One is the author alone; more than one means somebody else built it too. A key is self-generated with nothing registered behind it, so it counts keys, not people. MIT-0

Execution evidence

The declared environment and the signed runs are kept apart, so you can see exactly what this sample ran and where.

Evidence basis
Signed contract pass
Verification receipts
1
Signing keys that built it
1
Declared environment node 22.23 linux 24 · ubuntu · glibc 2.39 x64 node 22.23 javascript npm 10

Verification-run environments

Environment Contract Stages Run
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…		 2026-09-15

Case

HOW
Goal
verify @tiptap/pm.undoDepth in pkg:npm/%40tiptap/pm@3.11.0
Packages
Symbols
  • @tiptap/pm.undoDepth
Environment
node 22.23.2
Created
2026-09-15T04:32:54Z

Contract

  1. undoDepth returns 0 on newly initialized EditorState with history plugin
  2. undoDepth returns 0 when history plugin is not attached to editor state
  3. undoDepth returns 0 after non-document transactions such as selection changes
  4. undoDepth increments when document changes are applied to editor state
  5. undoDepth decrements when document changes are reverted via undo command
  6. undoDepth decrements when document changes are reverted via undoNoScroll command
  7. undoDepth increments again when undone changes are replayed via redo command
  8. undoDepth tracks multiple distinct edit steps separated by closeHistory
  9. undoDepth reflects accurate depth across alternating edit, undo, and redo sequences

Files

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

Download the source artifact (tar.gz)

Source

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 @tiptap/pm.undoDepth 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.undoDepth

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:efa020fe8a00f4a82d45db6c648b5922c0eb80ca4d1d09f03768fbbf833ff476","contract":["undoDepth returns 0 on newly initialized EditorState with history plugin","undoDepth returns 0 when history plugin is not attached to editor state","undoDepth returns 0 after non-document transactions such as selection changes","undoDepth increments when document changes are applied to editor state","undoDepth decrements when document changes are reverted via undo command","undoDepth decrements when document changes are reverted via undoNoScroll command","undoDepth increments again when undone changes are replayed via redo command","undoDepth tracks multiple distinct edit steps separated by closeHistory","undoDepth reflects accurate depth across alternating edit, undo, and redo sequences"],"goal":"verify @tiptap/pm.undoDepth in pkg:npm/%40tiptap/pm@3.11.0","kind":"HOW","packages":["pkg:npm/%40tiptap/pm@3.11.0"],"schemaVersion":1,"symbols":["@tiptap/pm.undoDepth"]},"contractCommand":["node","test/contract.mjs"],"environment":{"arch":"x64","distro":"ubuntu","ecosystem":"npm","executionContext":"node","language":"javascript","libc":"glibc","libcVersion":"2.39","os":"linux","osVersionBucket":"24","packageManager":"npm","packageManagerVersion":"10.9.8","runtime":"node","runtimeVersion":"22.23.2","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.undoDepth"],"verifierAdapter":"node-typescript@1"}
index.mjs
import {
  undoDepth,
  undo,
  redo,
  history,
  redoDepth,
  undoNoScroll,
  redoNoScroll,
  closeHistory,
  isHistoryTransaction
} from '@tiptap/pm/history';
import { EditorState, Plugin } from '@tiptap/pm/state';
import { schema } from '@tiptap/pm/schema-basic';

export {
  undoDepth,
  undo,
  redo,
  history,
  redoDepth,
  undoNoScroll,
  redoNoScroll,
  closeHistory,
  isHistoryTransaction,
  EditorState,
  Plugin,
  schema
};

export default undoDepth;
package-lock.json
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package.json
{
  "name": "sample-tiptap-pm-undodepth",
  "version": "1.0.0",
  "type": "module",
  "private": true,
  "dependencies": {
    "@tiptap/pm": "3.11.0"
  }
}
spec.json
{
  "schemaVersion": 1,
  "goal": "verify @tiptap/pm.undoDepth in pkg:npm/%40tiptap/pm@3.11.0",
  "kind": "HOW",
  "packages": [
    "pkg:npm/%40tiptap/pm@3.11.0"
  ],
  "symbols": [
    "@tiptap/pm.undoDepth"
  ]
}
test/contract.mjs
import assert from 'node:assert/strict';
import {
  undoDepth,
  undo,
  redo,
  history,
  redoDepth,
  undoNoScroll,
  redoNoScroll,
  closeHistory,
  EditorState,
  schema
} from '../index.mjs';

// 1. undoDepth returns 0 on newly initialized EditorState with history plugin
{
  const state = EditorState.create({ schema, plugins: [history()] });
  assert.equal(typeof undoDepth, 'function', 'undoDepth must be a function');
  assert.equal(undoDepth(state), 0, 'undoDepth must return 0 initially');
}

// 2. undoDepth returns 0 when history plugin is not attached to editor state
{
  const state = EditorState.create({ schema });
  assert.equal(undoDepth(state), 0, 'undoDepth must return 0 when history plugin is absent');
  const tr = state.tr.insertText('Text without history');
  const stateAfter = state.apply(tr);
  assert.equal(undoDepth(stateAfter), 0, 'undoDepth must remain 0 when history plugin is absent even after edits');
}

// 3. undoDepth returns 0 after non-document transactions such as selection changes
{
  const state = EditorState.create({ schema, plugins: [history()] });
  const tr = state.tr.setSelection(state.selection);
  const stateAfter = state.apply(tr);
  assert.equal(undoDepth(stateAfter), 0, 'undoDepth must remain 0 for transactions with no document changes');
}

// 4. undoDepth increments when document changes are applied to editor state
{
  let state = EditorState.create({ schema, plugins: [history()] });
  state = state.apply(state.tr.insertText('First change'));
  assert.equal(state.doc.textContent, 'First change');
  assert.equal(undoDepth(state), 1, 'undoDepth must increment to 1 after document edit');
}

// 5. undoDepth decrements when document changes are reverted via undo command
{
  let state = EditorState.create({ schema, plugins: [history()] });
  state = state.apply(state.tr.insertText('Change to revert'));
  assert.equal(undoDepth(state), 1);

  const undone = undo(state, (tr) => { state = state.apply(tr); });
  assert.equal(undone, true);
  assert.equal(state.doc.textContent, '');
  assert.equal(undoDepth(state), 0, 'undoDepth must decrement to 0 after undo');
}

// 6. undoDepth decrements when document changes are reverted via undoNoScroll command
{
  let state = EditorState.create({ schema, plugins: [history()] });
  state = state.apply(state.tr.insertText('Revert with undoNoScroll'));
  assert.equal(undoDepth(state), 1);

  const undone = undoNoScroll(state, (tr) => { state = state.apply(tr); });
  assert.equal(undone, true);
  assert.equal(state.doc.textContent, '');
  assert.equal(undoDepth(state), 0, 'undoDepth must decrement to 0 after undoNoScroll');
}

// 7. undoDepth increments again when undone changes are replayed via redo command
{
  let state = EditorState.create({ schema, plugins: [history()] });
  state = state.apply(state.tr.insertText('Change to redo'));
  undo(state, (tr) => { state = state.apply(tr); });
  assert.equal(undoDepth(state), 0);

  const redone = redo(state, (tr) => { state = state.apply(tr); });
  assert.equal(redone, true);
  assert.equal(state.doc.textContent, 'Change to redo');
  assert.equal(undoDepth(state), 1, 'undoDepth must increment back to 1 after redo');
}

// 8. undoDepth tracks multiple distinct edit steps separated by closeHistory
{
  let state = EditorState.create({ schema, plugins: [history()] });
  state = state.apply(state.tr.insertText('Step 1 '));
  state = state.apply(closeHistory(state.tr));
  state = state.apply(state.tr.insertText('Step 2 '));
  state = state.apply(closeHistory(state.tr));
  state = state.apply(state.tr.insertText('Step 3'));
  assert.equal(undoDepth(state), 3, 'undoDepth must be 3 for three closed history steps');

  undo(state, (tr) => { state = state.apply(tr); });
  assert.equal(undoDepth(state), 2);

  undo(state, (tr) => { state = state.apply(tr); });
  assert.equal(undoDepth(state), 1);

  undo(state, (tr) => { state = state.apply(tr); });
  assert.equal(undoDepth(state), 0, 'undoDepth must be 0 after undoing all steps');
}

// 9. undoDepth reflects accurate depth across alternating edit, undo, and redo sequences
{
  let state = EditorState.create({ schema, plugins: [history()] });
  state = state.apply(state.tr.insertText('Branch A'));
  assert.equal(undoDepth(state), 1);

  undo(state, (tr) => { state = state.apply(tr); });
  assert.equal(undoDepth(state), 0);

  state = state.apply(state.tr.insertText('Branch B'));
  assert.equal(undoDepth(state), 1);

  state = state.apply(closeHistory(state.tr));
  state = state.apply(state.tr.insertText(' appended'));
  assert.equal(undoDepth(state), 2);

  undo(state, (tr) => { state = state.apply(tr); });
  assert.equal(undoDepth(state), 1);

  redo(state, (tr) => { state = state.apply(tr); });
  assert.equal(undoDepth(state), 2);
}

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

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