Get quantity of undo actions

[reverofevil]

How do I get quantity of available undo actions?

[mikaelbr]

You can check that by doing structure.history.size.

var structure = immstruct.withHistory({ num: 1 });
var cursor = structure.cursor();
cursor = cursor.set('num', 2);
cursor = cursor.set('num', 3);

console.log(structure.history.size); //> 3

[reverofevil]

Thank you!