CodeSampleX

Sample

@tiptap/pm 3.11.0: StepMap

Verified sample for npm @tiptap/pm 3.11.0: StepMap. The contract ran on node 22 · linux debian/x64 · docker and passed: StepMap is exported by…

sha256:96556033a56b98079e8000cd8eea82ef0273e706e0019fb6a18c3fe3c8b4f3ea

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 linux 24 · ubuntu · glibc 2.39 x64 npm

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…		 2026-09-17

Case

HOW
Goal
verify @tiptap/pm.StepMap in pkg:npm/%40tiptap/pm@3.11.0
Packages
Symbols
  • @tiptap/pm.StepMap
Created
2026-09-17T04:05:12Z

Contract

  1. StepMap is exported by @tiptap/pm/transform as a class constructor
  2. StepMap maps untouched positions before and after the change range correctly
  3. StepMap maps insertion positions according to association parameter
  4. StepMap maps deleted ranges and marks positions as deleted in mapResult
  5. StepMap.invert creates an inverted mapping reversing old and new ranges
  6. StepMap.empty represents an identity mapping with no offset
  7. StepMap.offset shifts all positions by a given integer offset
  8. StepMap forEach iterates through replacement ranges with old and new offsets

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.StepMap 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.StepMap

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:f090f4c530f19be5ca9347cfcdc6daad86e57e3f729e2b703ffb453c536da079","contract":["StepMap is exported by @tiptap/pm/transform as a class constructor","StepMap maps untouched positions before and after the change range correctly","StepMap maps insertion positions according to association parameter","StepMap maps deleted ranges and marks positions as deleted in mapResult","StepMap.invert creates an inverted mapping reversing old and new ranges","StepMap.empty represents an identity mapping with no offset","StepMap.offset shifts all positions by a given integer offset","StepMap forEach iterates through replacement ranges with old and new offsets"],"goal":"verify @tiptap/pm.StepMap in pkg:npm/%40tiptap/pm@3.11.0","kind":"HOW","packages":["pkg:npm/%40tiptap/pm@3.11.0"],"schemaVersion":1,"symbols":["@tiptap/pm.StepMap"]},"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.StepMap"],"verifierAdapter":"node-typescript@1"}
index.mjs
import { StepMap } from '@tiptap/pm/transform';

export { StepMap };

/**
 * Creates a step map representing an insertion.
 *
 * @param {number} pos - Position where insertion occurs.
 * @param {number} length - Number of units inserted.
 * @returns {StepMap} StepMap instance for insertion.
 */
export function createInsertMap(pos, length) {
  return new StepMap([pos, 0, length]);
}

/**
 * Creates a step map representing a deletion.
 *
 * @param {number} pos - Position where deletion starts.
 * @param {number} length - Number of units deleted.
 * @returns {StepMap} StepMap instance for deletion.
 */
export function createDeleteMap(pos, length) {
  return new StepMap([pos, length, 0]);
}

/**
 * Creates a step map representing a replacement.
 *
 * @param {number} pos - Starting position of the range.
 * @param {number} oldLength - Length before replacement.
 * @param {number} newLength - Length after replacement.
 * @returns {StepMap} StepMap instance for replacement.
 */
export function createReplaceMap(pos, oldLength, newLength) {
  return new StepMap([pos, oldLength, newLength]);
}

export default {
  StepMap,
  createInsertMap,
  createDeleteMap,
  createReplaceMap
};
package-lock.json
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package.json
{
  "name": "sample-tiptap-pm-stepmap",
  "version": "1.0.0",
  "type": "module",
  "main": "index.mjs",
  "license": "MIT-0",
  "scripts": {
    "test": "node test/contract.mjs"
  },
  "dependencies": {
    "@tiptap/pm": "3.11.0"
  }
}
spec.json
{
  "schemaVersion": 1,
  "goal": "verify @tiptap/pm.StepMap in pkg:npm/%40tiptap/pm@3.11.0",
  "kind": "HOW",
  "packages": [
    "pkg:npm/%40tiptap/pm@3.11.0"
  ],
  "symbols": [
    "@tiptap/pm.StepMap"
  ]
}
test/contract.mjs
import assert from 'node:assert/strict';
import { StepMap } from '@tiptap/pm/transform';
import {
  StepMap as ExportedStepMap,
  createInsertMap,
  createDeleteMap,
  createReplaceMap
} from '../index.mjs';

// 1. StepMap is exported by @tiptap/pm/transform as a class constructor
assert.equal(typeof StepMap, 'function');
assert.equal(typeof ExportedStepMap, 'function');
assert.equal(StepMap, ExportedStepMap);
assert(StepMap.prototype && typeof StepMap.prototype.map === 'function');
assert(StepMap.prototype && typeof StepMap.prototype.mapResult === 'function');
assert(StepMap.prototype && typeof StepMap.prototype.invert === 'function');
assert(StepMap.prototype && typeof StepMap.prototype.forEach === 'function');

// 2. StepMap maps untouched positions before and after the change range correctly
const replaceMap = new StepMap([5, 3, 7]);
assert.equal(replaceMap.map(0), 0);
assert.equal(replaceMap.map(4), 4);
assert.equal(replaceMap.map(8), 12);
assert.equal(replaceMap.map(20), 24);

// 3. StepMap maps insertion positions according to association parameter
const insertMap = new StepMap([3, 0, 4]);
assert.equal(insertMap.map(2), 2);
assert.equal(insertMap.map(3, -1), 3);
assert.equal(insertMap.map(3, 1), 7);
assert.equal(insertMap.map(3), 7);
assert.equal(insertMap.map(5), 9);

// 4. StepMap maps deleted ranges and marks positions as deleted in mapResult
const deleteMap = new StepMap([4, 6, 0]);
const resBefore = deleteMap.mapResult(2);
assert.equal(resBefore.pos, 2);
assert.equal(resBefore.deleted, false);

const resInside = deleteMap.mapResult(6);
assert.equal(resInside.pos, 4);
assert.equal(resInside.deleted, true);

const resAfter = deleteMap.mapResult(12);
assert.equal(resAfter.pos, 6);
assert.equal(resAfter.deleted, false);

// 5. StepMap.invert creates an inverted mapping reversing old and new ranges
const map = new StepMap([2, 4, 8]);
const inverted = map.invert();
assert.equal(map.map(6), 10);
assert.equal(inverted.map(10), 6);
assert.equal(map.map(3, 1), 10);
assert.equal(inverted.map(5, 1), 6);

// 6. StepMap.empty represents an identity mapping with no offset
assert.equal(StepMap.empty.map(0), 0);
assert.equal(StepMap.empty.map(42), 42);
assert.equal(StepMap.empty.ranges.length, 0);

// 7. StepMap.offset shifts all positions by a given integer offset
const offsetMap = StepMap.offset(15);
assert.equal(offsetMap.map(0), 15);
assert.equal(offsetMap.map(10), 25);
assert.equal(offsetMap.map(100), 115);

// 8. StepMap forEach iterates through replacement ranges with old and new offsets
const ranges = [];
map.forEach((oldStart, oldEnd, newStart, newEnd) => {
  ranges.push({ oldStart, oldEnd, newStart, newEnd });
});
assert.equal(ranges.length, 1);
assert.deepEqual(ranges[0], { oldStart: 2, oldEnd: 6, newStart: 2, newEnd: 10 });

// Verify module helpers
const ins = createInsertMap(5, 3);
assert(ins instanceof StepMap);
assert.equal(ins.map(5, 1), 8);

const del = createDeleteMap(5, 3);
assert(del instanceof StepMap);
assert.equal(del.map(5, 1), 5);

const rep = createReplaceMap(5, 3, 7);
assert(rep instanceof StepMap);
assert.equal(rep.map(8), 12);

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

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