There is a variable called typescript-indent-level
that, by default is set to 4. For Spacemacs specifically, you can change the value of this variable by directly setting it in your dotspacemacs/user-config
function like so:
(defun dotspacemacs/user-config ()
(setq-default typescript-indent-level 2))
As a Spacemacs user myself I'm not fully aware of the standard Emacs ways of customizing variables, but there are other options as well such as M-x customize
.