@atlaskit/editor-plugin-show-diff/dist/esm/pm-plugins/calculateDiff/markAwareTokenEncoder.js

ShowDiff plugin for @atlaskit/editor-core

import { encodeCharacterWithMarks } from './encodeCharacterWithMarks';

/** Mirrors the library's private (unexported) `typeID` so node-end tokens match. */
var typeID = function typeID(type) {
  var cache = type.schema.cached.changeSetIDs || (type.schema.cached.changeSetIDs = Object.create(null));
  var id = cache[type.name];
  if (id == null) {
    cache[type.name] = id = Object.keys(type.schema.nodes).indexOf(type.name) + 1;
  }
  return id;
};

/**
 * The library default encoder plus mark folding on text characters.
 *
 * Deliberately narrower than `attrAwareTokenEncoder`: node-start tokens keep the library default
 * and do not fold in diffable attributes, which `getAttrChangeRanges` already reports for every
 * diff type. The NCS version-history path also uses `attrAwareTokenEncoder` so main diff calculation
 * detects attribute-only node replacements.
 */
export var markAwareTokenEncoder = {
  encodeCharacter: function encodeCharacter(char, marks) {
    return encodeCharacterWithMarks(char, marks);
  },
  encodeNodeStart: function encodeNodeStart(node) {
    return node.type.name;
  },
  encodeNodeEnd: function encodeNodeEnd(node) {
    return -typeID(node.type);
  },
  compareTokens: function compareTokens(a, b) {
    return a === b;
  }
};