join-backward

Variables

Variable Description

Variable	Description
joinBackward	Joins or merges the current block with the one before it when the cursor is at the start of a textblock. This command implements comprehensive backward-joining behavior with multiple fallback strategies: Direct Join: If there's a compatible block directly before, join them Delete Barrier: Try to remove structural barriers between blocks Delete Empty Block: If the current block is empty, delete it and select the content before Delete Atomic Node: If the node before is atomic, delete it Lift Block: If no other strategy works, try to lift the block out of its parent The command uses the view (if provided) for accurate bidirectional text detection to determine if the cursor is truly at the start of the block. Param The current editor state Param Optional dispatch function to execute the transaction Param Optional editor view for accurate cursor position detection Example typescript `// Use as part of backspace behavior const keymap = { Backspace: chainCommands(deleteSelection, joinBackward, selectNodeBackward), };`

Joins or merges the current block with the one before it when the cursor is at the start of a textblock.

This command implements comprehensive backward-joining behavior with multiple fallback strategies:

Direct Join: If there's a compatible block directly before, join them
Delete Barrier: Try to remove structural barriers between blocks
Delete Empty Block: If the current block is empty, delete it and select the content before
Delete Atomic Node: If the node before is atomic, delete it
Lift Block: If no other strategy works, try to lift the block out of its parent

The command uses the view (if provided) for accurate bidirectional text detection to determine if the cursor is truly at the start of the block.

Param

The current editor state

Param

Optional dispatch function to execute the transaction

Param

Optional editor view for accurate cursor position detection

Example

typescript

// Use as part of backspace behavior
const keymap = {
  Backspace: chainCommands(deleteSelection, joinBackward, selectNodeBackward),
};