Type Editor

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Type Editor / @type-editor/commands / util/helpers

util/helpers

Functions

Function	Description
atBlockEnd	Checks if the cursor is at the end of a textblock. This function determines whether the selection is a cursor positioned at the very end of a textblock. It uses the view (if provided) for accurate bidirectional text detection, which is important for languages with right-to-left text direction.
atBlockStart	Checks if the cursor is at the start of a textblock. This function determines whether the selection is a cursor positioned at the very beginning of a textblock. It uses the view (if provided) for accurate bidirectional text detection, which is important for languages with right-to-left text direction.
deleteBarrier	Attempts to delete or join nodes separated by a structural barrier. This is a complex function that implements multiple strategies for handling deletion or joining when there's a structural barrier (like different node types or isolating nodes) between content. It tries several approaches in order: Simple Join: Try basic joining if nodes are compatible Wrap and Merge: Wrap the after node to make it compatible, then merge Lift: Lift the after content up in the hierarchy Join Textblocks: Find and join inner textblocks across the barrier This function is used by backward and forward joining commands to handle complex structural scenarios that simple joining can't handle.
findCutAfter	Finds the position where a forward cut/join operation should occur. This function traverses up the document tree from the given position to find the nearest position where content can be joined or cut forward. It stops at isolating nodes (nodes marked with isolating: true in their spec), which prevent content from being joined across their boundaries. The function looks for the first ancestor level where there's a sibling node after the current position, indicating a valid cut point.
findCutBefore	Finds the position where a backward cut/join operation should occur. This function traverses up the document tree from the given position to find the nearest position where content can be joined or cut backward. It stops at isolating nodes (nodes marked with isolating: true in their spec), which prevent content from being joined across their boundaries. The function looks for the first ancestor level where there's a sibling node before the current position, indicating a valid cut point.
textblockAt	Checks if a node contains a textblock at its start or end. This function traverses down from the given node to determine if there's a textblock accessible at the specified side. It navigates through the node hierarchy following either first or last children depending on the side. Example // Check if a blockquote starts with a textblock const startsWithText = textblockAt(blockquoteNode, "start"); // Check if a list item ends with a single textblock const endsWithOnlyText = textblockAt(listItemNode, "end", true);