CodeSampleX

Sample

@tiptap/pm 3.11.0: redoNoScroll

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

sha256:1ea1d36c58a62b392c72d839130af3f7bef18e43ac35c399bdb3f0b160398941

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.redoNoScroll in pkg:npm/%40tiptap/pm@3.11.0
Packages
Symbols
  • @tiptap/pm.redoNoScroll
Environment
node 22.23.2
Created
2026-09-15T05:10:29Z

Contract

  1. redoNoScroll returns false when history plugin is present but redo stack is empty
  2. redoNoScroll returns false when history plugin is not attached to editor state
  3. redoNoScroll without dispatch returns true when redoable changes exist without modifying state
  4. redoNoScroll reapplies undone document modification and does not set scrolledIntoView on transaction
  5. redoNoScroll decrements redoDepth and increments undoDepth upon replaying transaction
  6. redoNoScroll generates a transaction recognized by isHistoryTransaction
  7. multiple undone edits can be sequentially reapplied with redoNoScroll until redoDepth reaches zero
  8. subsequent document edits clear the redo stack causing redoNoScroll to return false

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.redoNoScroll 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.redoNoScroll

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:sha256:6f523190cec28738bbaebda5419954e41180a5afede700041b00f3b22110211c","contract":["redoNoScroll returns false when history plugin is present but redo stack is empty","redoNoScroll returns false when history plugin is not attached to editor state","redoNoScroll without dispatch returns true when redoable changes exist without modifying state","redoNoScroll reapplies undone document modification and does not set scrolledIntoView on transaction","redoNoScroll decrements redoDepth and increments undoDepth upon replaying transaction","redoNoScroll generates a transaction recognized by isHistoryTransaction","multiple undone edits can be sequentially reapplied with redoNoScroll until redoDepth reaches zero","subsequent document edits clear the redo stack causing redoNoScroll to return false"],"goal":"verify @tiptap/pm.redoNoScroll in pkg:npm/%40tiptap/pm@3.11.0","kind":"HOW","packages":["pkg:npm/%40tiptap/pm@3.11.0"],"schemaVersion":1,"symbols":["@tiptap/pm.redoNoScroll"]},"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.redoNoScroll"],"verifierAdapter":"node-typescript@1"}
index.mjs
import {
  redoNoScroll,
  redo,
  undo,
  history,
  redoDepth,
  undoDepth,
  undoNoScroll,
  closeHistory,
  isHistoryTransaction
} from '@tiptap/pm/history';
import { EditorState, Plugin } from '@tiptap/pm/state';
import { schema } from '@tiptap/pm/schema-basic';

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

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

// 1. redoNoScroll returns false when history plugin is present but redo stack is empty
{
  const state = EditorState.create({ schema, plugins: [history()] });
  assert.equal(typeof redoNoScroll, 'function', 'redoNoScroll must be a function');
  assert.equal(redoNoScroll(state), false, 'redoNoScroll must return false on empty history');
  assert.equal(redoDepth(state), 0, 'redoDepth must be 0');
}

// 2. redoNoScroll returns false when history plugin is not attached to editor state
{
  const state = EditorState.create({ schema });
  assert.equal(redoNoScroll(state), false, 'redoNoScroll must return false when history plugin is absent');
}

// 3. redoNoScroll without dispatch returns true when redoable changes exist without modifying state
{
  let state = EditorState.create({ schema, plugins: [history()] });
  state = state.apply(state.tr.insertText('Dry run check'));
  undo(state, (tr) => { state = state.apply(tr); });

  const canRedo = redoNoScroll(state);
  assert.equal(canRedo, true, 'dry run redoNoScroll must return true');
  assert.equal(state.doc.textContent, '', 'dry run must not mutate document state');
}

// 4. redoNoScroll reapplies undone document modification and does not set scrolledIntoView on transaction
{
  let state = EditorState.create({ schema, plugins: [history()] });
  state = state.apply(state.tr.insertText('Scroll avoidance test'));
  undo(state, (tr) => { state = state.apply(tr); });
  assert.equal(state.doc.textContent, '', 'content must be empty after undo');

  let dispatchedTr = null;
  const success = redoNoScroll(state, (tr) => {
    dispatchedTr = tr;
    state = state.apply(tr);
  });
  assert.equal(success, true, 'redoNoScroll must return true when redoable changes exist');
  assert.ok(dispatchedTr != null, 'redoNoScroll must provide transaction to dispatch');
  assert.equal(dispatchedTr.scrolledIntoView, false, 'redoNoScroll must not set scrolledIntoView');
  assert.equal(state.doc.textContent, 'Scroll avoidance test', 'redoNoScroll must restore undone text');
}

// 5. redoNoScroll decrements redoDepth and increments undoDepth upon replaying transaction
{
  let state = EditorState.create({ schema, plugins: [history()] });
  state = state.apply(state.tr.insertText('Tracking depths'));
  assert.equal(undoDepth(state), 1);
  assert.equal(redoDepth(state), 0);

  undo(state, (tr) => { state = state.apply(tr); });
  assert.equal(undoDepth(state), 0);
  assert.equal(redoDepth(state), 1);

  redoNoScroll(state, (tr) => { state = state.apply(tr); });
  assert.equal(undoDepth(state), 1, 'undoDepth must increment back to 1');
  assert.equal(redoDepth(state), 0, 'redoDepth must decrement back to 0');
}

// 6. redoNoScroll generates a transaction recognized by isHistoryTransaction
{
  let state = EditorState.create({ schema, plugins: [history()] });
  state = state.apply(state.tr.insertText('Meta flag check'));
  undo(state, (tr) => { state = state.apply(tr); });

  let redoTr = null;
  redoNoScroll(state, (tr) => {
    redoTr = tr;
    state = state.apply(tr);
  });
  assert.ok(redoTr != null);
  assert.equal(isHistoryTransaction(redoTr), true, 'isHistoryTransaction must be true for redoNoScroll transaction');

  const regularTr = state.tr.insertText(' suffix');
  assert.equal(isHistoryTransaction(regularTr), false, 'isHistoryTransaction must be false for normal transaction');
}

// 7. multiple undone edits can be sequentially reapplied with redoNoScroll until redoDepth reaches zero
{
  let state = EditorState.create({ schema, plugins: [history()] });
  state = state.apply(state.tr.insertText('Part 1 '));
  state = state.apply(closeHistory(state.tr));
  state = state.apply(state.tr.insertText('Part 2 '));
  state = state.apply(closeHistory(state.tr));
  state = state.apply(state.tr.insertText('Part 3'));
  assert.equal(state.doc.textContent, 'Part 1 Part 2 Part 3');
  assert.equal(undoDepth(state), 3);

  undo(state, (tr) => { state = state.apply(tr); });
  undo(state, (tr) => { state = state.apply(tr); });
  assert.equal(state.doc.textContent, 'Part 1 ');
  assert.equal(redoDepth(state), 2);

  redoNoScroll(state, (tr) => { state = state.apply(tr); });
  assert.equal(state.doc.textContent, 'Part 1 Part 2 ');
  assert.equal(redoDepth(state), 1);

  redoNoScroll(state, (tr) => { state = state.apply(tr); });
  assert.equal(state.doc.textContent, 'Part 1 Part 2 Part 3');
  assert.equal(redoDepth(state), 0);
  assert.equal(redoNoScroll(state), false, 'redoNoScroll must return false when redo stack is exhausted');
}

// 8. subsequent document edits clear the redo stack causing redoNoScroll to return false
{
  let state = EditorState.create({ schema, plugins: [history()] });
  state = state.apply(state.tr.insertText('Base content'));
  undo(state, (tr) => { state = state.apply(tr); });
  assert.equal(redoDepth(state), 1);

  state = state.apply(state.tr.insertText('Divergent edit'));
  assert.equal(redoDepth(state), 0, 'new edit must clear redo stack');
  assert.equal(redoNoScroll(state), false, 'redoNoScroll must return false after redo stack is cleared');
}

console.log('All @tiptap/pm.redoNoScroll contract tests passed successfully.');

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