Editora 0.10.0. Archived, so links from that release keep working. Read the 0.18.3 page →
Debug: Add Watch
debug.addWatch Add a watch expression evaluated at each stop.
How to run it
Open the command palette (M-x in the Emacs keymap) and search for Debug: Add Watch, then press Enter. It has no default keybinding, but you can bind one in Settings → Keymaps.