CodeSampleX

示例

@tiptap/pm 3.11.0: undoNoScroll

已验证示例 — npm @tiptap/pm 3.11.0: undoNoScroll. contract 在 node 22 · linux debian/x64 · docker 上运行并通过： undoNoScroll is a function exported by @tiptap/pm/history

sha256:bf1475b06c37b11f8a2bc223f3c7eedada0f0f83a5d3d847c9870d2b25d45f62

本网络只提供一件事：能构建的样本。它在沙箱中运行并保留签名回执。它不评级、不担保——同样的代码能否在你的环境构建，它没有测量过。 提交了通过的契约回执的不同签名密钥数量。为 1 表示只有作者；大于 1 表示还有其他人构建过。密钥是自行生成的，背后没有注册身份，因此计的是密钥而非人。 MIT-0

执行证据

声明的环境与签名的运行分开呈现，你可以看到这个样本究竟运行了什么、在哪里运行。

证据依据
签名契约通过
验证回执
1
构建过它的签名密钥
1
声明的环境 node 22.23 linux 24 · ubuntu · glibc 2.39 x64 node 22.23 javascript npm 10

验证运行环境

环境 契约 阶段 运行日期
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

案例

HOW
目标
verify @tiptap/pm.undoNoScroll in pkg:npm/%40tiptap/pm@3.11.0
包
符号
  • @tiptap/pm.undoNoScroll
环境
node 22.23.2
创建时间
2026-09-15T06:40:52Z

契约

  1. undoNoScroll is a function exported by @tiptap/pm/history
  2. undoNoScroll returns false when history is empty on initial editor state
  3. undoNoScroll returns false when history plugin is not attached to editor state
  4. undoNoScroll returns true without modifying state when dispatch is omitted and undo is possible
  5. undoNoScroll reverts the last document edit when dispatch is provided
  6. undoNoScroll creates a transaction without setting scrolledIntoView flag
  7. undoNoScroll allows undone changes to be reapplied via redo
  8. undoNoScroll sequentially reverts multiple edits across closed history steps
  9. undoNoScroll returns false once all history steps have been undone

文件

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

下载源代码构件 (tar.gz)

源代码

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.undoNoScroll 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.undoNoScroll

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:sha256:0f7eff429a0b898b6920a1b3f9e416fb46bead5f0ee6444ed1e22ab72f4d68fe","contract":["undoNoScroll is a function exported by @tiptap/pm/history","undoNoScroll returns false when history is empty on initial editor state","undoNoScroll returns false when history plugin is not attached to editor state","undoNoScroll returns true without modifying state when dispatch is omitted and undo is possible","undoNoScroll reverts the last document edit when dispatch is provided","undoNoScroll creates a transaction without setting scrolledIntoView flag","undoNoScroll allows undone changes to be reapplied via redo","undoNoScroll sequentially reverts multiple edits across closed history steps","undoNoScroll returns false once all history steps have been undone"],"goal":"verify @tiptap/pm.undoNoScroll in pkg:npm/%40tiptap/pm@3.11.0","kind":"HOW","packages":["pkg:npm/%40tiptap/pm@3.11.0"],"schemaVersion":1,"symbols":["@tiptap/pm.undoNoScroll"]},"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.undoNoScroll"],"verifierAdapter":"node-typescript@1"}
index.mjs
import {
  undoNoScroll,
  undo,
  redo,
  history,
  undoDepth,
  redoDepth,
  closeHistory,
  redoNoScroll,
  isHistoryTransaction
} from '@tiptap/pm/history';
import { EditorState, Plugin } from '@tiptap/pm/state';
import { schema } from '@tiptap/pm/schema-basic';

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

export default undoNoScroll;
package-lock.json
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  "lockfileVersion": 3,
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package.json
{
  "name": "sample-tiptap-pm-undonoscroll",
  "version": "1.0.0",
  "type": "module",
  "private": true,
  "dependencies": {
    "@tiptap/pm": "3.11.0"
  }
}
spec.json
{
  "schemaVersion": 1,
  "goal": "verify @tiptap/pm.undoNoScroll in pkg:npm/%40tiptap/pm@3.11.0",
  "kind": "HOW",
  "packages": [
    "pkg:npm/%40tiptap/pm@3.11.0"
  ],
  "symbols": [
    "@tiptap/pm.undoNoScroll"
  ]
}
test/contract.mjs
import assert from 'node:assert/strict';
import {
  undoNoScroll,
  undo,
  redo,
  history,
  undoDepth,
  redoDepth,
  closeHistory,
  EditorState,
  schema
} from '../index.mjs';

// 1. undoNoScroll is a function exported by @tiptap/pm/history
{
  assert.equal(typeof undoNoScroll, 'function', 'undoNoScroll must be a function');
}

// 2. undoNoScroll returns false when history is empty on initial editor state
{
  const state = EditorState.create({ schema, plugins: [history()] });
  let dispatched = false;
  const result = undoNoScroll(state, () => { dispatched = true; });
  assert.equal(result, false, 'undoNoScroll must return false when no history exists');
  assert.equal(dispatched, false, 'dispatch must not be called when undoNoScroll returns false');
}

// 3. undoNoScroll returns false when history plugin is not attached to editor state
{
  const state = EditorState.create({ schema });
  const tr = state.tr.insertText('Edit without history');
  const stateAfter = state.apply(tr);
  assert.equal(undoNoScroll(stateAfter), false, 'undoNoScroll must return false without history plugin');
}

// 4. undoNoScroll returns true without modifying state when dispatch is omitted and undo is possible
{
  let state = EditorState.create({ schema, plugins: [history()] });
  state = state.apply(state.tr.insertText('Sample text'));
  const canUndo = undoNoScroll(state);
  assert.equal(canUndo, true, 'undoNoScroll without dispatch must return true when undo is available');
  assert.equal(state.doc.textContent, 'Sample text', 'state must remain unmodified when dispatch is omitted');
}

// 5. undoNoScroll reverts the last document edit when dispatch is provided
{
  let state = EditorState.create({ schema, plugins: [history()] });
  state = state.apply(state.tr.insertText('First text'));
  assert.equal(state.doc.textContent, 'First text');

  const undone = undoNoScroll(state, (tr) => { state = state.apply(tr); });
  assert.equal(undone, true, 'undoNoScroll must return true when dispatching undo');
  assert.equal(state.doc.textContent, '', 'document text must be reverted after undoNoScroll');
}

// 6. undoNoScroll creates a transaction without setting scrolledIntoView flag
{
  let state = EditorState.create({ schema, plugins: [history()] });
  state = state.apply(state.tr.insertText('Check scroll flag'));

  let undoTr = null;
  undo(state, (tr) => { undoTr = tr; });
  assert.equal(undoTr.scrolledIntoView, true, 'regular undo must set scrolledIntoView to true');

  let undoNoScrollTr = null;
  undoNoScroll(state, (tr) => { undoNoScrollTr = tr; });
  assert.equal(Boolean(undoNoScrollTr.scrolledIntoView), false, 'undoNoScroll must not set scrolledIntoView');
}

// 7. undoNoScroll allows undone changes to be reapplied via redo
{
  let state = EditorState.create({ schema, plugins: [history()] });
  state = state.apply(state.tr.insertText('Text to undo and redo'));
  undoNoScroll(state, (tr) => { state = state.apply(tr); });
  assert.equal(state.doc.textContent, '');

  const redone = redo(state, (tr) => { state = state.apply(tr); });
  assert.equal(redone, true, 'redo must return true after undoNoScroll');
  assert.equal(state.doc.textContent, 'Text to undo and redo', 'redo must restore content reverted by undoNoScroll');
}

// 8. undoNoScroll sequentially reverts multiple edits across closed history steps
{
  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(state.doc.textContent, 'Step 1 Step 2 Step 3');

  undoNoScroll(state, (tr) => { state = state.apply(tr); });
  assert.equal(state.doc.textContent, 'Step 1 Step 2 ');

  undoNoScroll(state, (tr) => { state = state.apply(tr); });
  assert.equal(state.doc.textContent, 'Step 1 ');

  undoNoScroll(state, (tr) => { state = state.apply(tr); });
  assert.equal(state.doc.textContent, '');
}

// 9. undoNoScroll returns false once all history steps have been undone
{
  let state = EditorState.create({ schema, plugins: [history()] });
  state = state.apply(state.tr.insertText('Only step'));
  undoNoScroll(state, (tr) => { state = state.apply(tr); });
  assert.equal(undoNoScroll(state), false, 'undoNoScroll must return false when all history steps are exhausted');
}

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

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