declare module 'vscode' {
	export namespace window {
		/**
		 * The currently active terminal or `undefined`. The active terminal is the one that
		 * currently has focus or most recently had focus.
		 */
		export const activeTerminal: Terminal | undefined;

		/**
		 * An [event](#Event) which fires when the [active terminal](#window.activeTerminal)
		 * has changed. *Note* that the event also fires when the active terminal changes
		 * to `undefined`.
		 */
		export const onDidChangeActiveTerminal: Event<Terminal | undefined>;
	}
}