import type { Operation } from './commands';
/**
 * @summary Filter operations based on when properties
 * @function
 * @protected
 *
 * @description
 * This function discards the operations that don't match given certain options.
 *
 * @param {Object[]} operations - array of operations
 * @param {Object} options - configuration options
 *
 * @returns {Object[]} filtered operations
 *
 * @example
 * const operations = utils.filterWhenMatches(
 * 	[
 * 		{
 * 			command: 'foo',
 * 			when: {
 * 				name: 'john',
 * 			},
 * 		},
 * 		{
 * 			command: 'bar',
 * 			when: {
 * 				name: 'jane',
 * 			},
 * 		},
 * 	],
 * 	{ name: 'john'},
 * );
 */
export declare const filterWhenMatches: (operations: Operation[], options: object) => Operation[];
/**
 * @summary Get missing options from operations `when` properties
 * @function
 * @protected
 *
 * @param {Object[]} operations - array of operations
 * @param {Object} options - configuration options
 *
 * @returns {String[]} missing options
 *
 * @example
 * const missingOptions = utils.getMissingOptions(
 * 	[{
 * 		command: 'foo',
 * 		when: {
 * 			foo: 1
 * 		}
 * 	}],
 * 	{ bar: 2 },
 * );
 *
 * console.log(missingOptions);
 * > [ 'foo' ]
 */
export declare const getMissingOptions: (operations: Operation[], options: object) => string[];
/**
 * @summary Get operating system
 * @function
 * @protected
 *
 * @returns {String} operating system
 *
 * @example
 * const os = utils.getOperatingSystem();
 */
export declare const getOperatingSystem: () => "osx" | "aix" | "android" | "freebsd" | "haiku" | "linux" | "openbsd" | "sunos" | "win32" | "cygwin" | "netbsd";