How to open the lightbulb via shortcut?

Question

Some languages support code actions which display a lightbulb providing quick fixes for a warning/error (See https://code.visualstudio.com/docs/editor/editingevolved#_code-a

Answer 1

The correct command editor.action.quickFix. The default binding on Windows looks like this:

{ "key": "ctrl+.", "command": "editor.action.quickFix",
                   "when": "editorTextFocus" }

On Mac it's CMD + ..