Type Editor

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Type Editor / @type-editor/dom-change-util / parse-change/is-mark-change

parse-change/is-mark-change

Functions

Function

Description

isMarkChange

Determines whether one fragment could be created from another by adding or removing a single mark type. Used to optimize mark changes. This is an optimization for detecting when a change is just adding or removing formatting (like bold or italic) without changing the actual text content. When detected, the change can be applied as a mark operation instead of a full content replacement, which is more efficient and maintains better edit history. The detection process: Compares marks on the first child of each fragment Calculates which marks were added and which were removed If exactly one mark was added OR one was removed, it's a mark change Applies the mark operation to all children and verifies it recreates the current fragment Returns null if: Either fragment is empty More than one mark changed Both marks were added and removed Applying the mark change doesn't recreate the current fragment See MarkChangeInfo for return type structure