Convert snake_case to camelCase in VS Code Press CTRL-H ( ⌥⌘F on Mac ). Press ALT-R ( ⌥⌘R on Mac ). Type _([a-zA-Z]). Press TAB and type $1. Press ALT-ENTER ( ⌥ENTER on Mac ). Press F1 and type upper, then press ENTER. Press CTRL-ALT-ENTER ( ⌥ENTER on Mac ).