Type Editor

---

Type Editor / @type-editor/commands / join-up / joinUp

Variable: joinUp

const joinUp: Command;

Defined in: join-up.ts:44

Joins the selected block with the block above it.

This command attempts to join the selected block (or the closest ancestor block) with its previous sibling. The behavior differs based on the selection type:

• Node Selection: Joins at the start of the selected node and maintains node selection
• Text Selection: Finds the nearest joinable point before the selection

When a node selection is used and the join succeeds, the command will automatically select the joined node to maintain the user's selection context.

The command will fail if:

• A textblock node is selected (textblocks can't be joined this way)
• No valid join point exists before the selection
• The structure doesn't allow joining

Param

The current editor state

Param

Optional dispatch function to execute the transaction

Returns

true if the join was performed, false otherwise

Example

// Bind to a key for joining blocks upward
const keymap = {
  "Alt-ArrowUp": joinUp,
};

// Use in a menu item
const menuItem = {
  label: "Join with block above",
  run: joinUp,
  enable: (state) => joinUp(state),
};