/**
 * Creates an array of property names from an object where the property values are functions.
 *
 * Only checks for own properties with string keys. Inherited properties or
 * properties with Symbol keys are not included.
 *
 * @param {unknown} object The object to inspect.
 * @returns {string[]} An array of function property names.
 *
 * @example
 *
 * function Foo() {
 *   this.a = () => 'a'
 *   this.b = () => 'b'
 * }
 *
 * Foo.prototype.c = () => 'c'
 *
 * functions(new Foo)
 * // => ['a', 'b']
 */
declare function functions(object: unknown): string[];

export { functions };