Function ifCommand

ifCommand(editor: Editor, commandName: string): Promise<Command>
Immediately resolving promise to retrieve command. Rejected with Error when command is not found. Rejecting with CommandNotFoundError on error.
Parameters
- editor: Editor
  editor instance
- commandName: string
  command name to search for
Returns Promise<Command>
Example
```
ifCommand(editor, commandName)
.then(handler)
.catch(optionalCommandNotFound);
```
- Defined in Commands.ts:96