src/vs/editor/browser/coreCommands.ts/isRevealLineArgs
	const isRevealLineArgs = function (arg: any): boolean {
		if (!types.isObject(arg)) {
			return false;
		}

		const reveaLineArg: RawArguments = arg;

		if (!types.isNumber(reveaLineArg.lineNumber) && !types.isString(reveaLineArg.lineNumber)) {
			return false;
		}

		if (!types.isUndefined(reveaLineArg.at) && !types.isString(reveaLineArg.at)) {
			return false;
		}

		return true;
	};