gnome-shell-extensions-extra/extensions/48/no-overview/extension.js

/*
  No overview at start-up
  GNOME Shell 45+ extension
  Contributors: @fthx
  License: GPL v3
*/

import * as Main from 'resource:///org/gnome/shell/ui/main.js';

export default class NoOverviewExtension {
    enable() {
        if (Main.layoutManager._startingUp)
            Main.layoutManager.connectObject('startup-complete', () => Main.overview.hide(), this);
    }

    disable() {
        Main.layoutManager.disconnectObject(this);
    }
}