export declare function concatIterables<T>(...iterables: Iterable<T>[]): Iterable<T>;
export declare function isEmptyIterable(iterable: Iterable<any>): boolean;
export declare function someInIterable<T>(iterable: Iterable<T>, predicate: (value: T) => boolean): boolean;
export declare function everyInIterable<T>(iterable: Iterable<T>, predicate: (value: T) => boolean): boolean;
export declare function firstInIterable<T, U>(iterable: Iterable<T>, defaultValue: U): T | U;
export declare function firstInIterable<T>(iterable: Iterable<T>): T | undefined;
export declare function findInIterable<T, U, V extends T>(iterable: Iterable<T>, predicate: (value: T) => value is V, defaultValue: U): V | U;
export declare function findInIterable<T, U>(iterable: Iterable<T>, predicate: (value: T) => boolean, defaultValue: U): T | U;
export declare function findInIterable<T, V extends T>(iterable: Iterable<T>, predicate: (value: T) => value is V): V | undefined;
export declare function findInIterable<T>(iterable: Iterable<T>, predicate: (value: T) => boolean): T | undefined;
export declare function mapIterable<T, V>(iterable: Iterable<T>, project: (value: T) => V): Iterable<V>;
export declare function flatMapIterable<T, V>(iterable: Iterable<T>, project: (value: T) => Iterable<V>): Iterable<V>;
export declare function filterIterable<T, V extends T>(iterable: Iterable<T>, predicate: (value: T) => value is V): Iterable<V>;
export declare function filterIterable<T>(iterable: Iterable<T>, predicate: (value: T) => boolean): Iterable<T>;
export declare function createIterable<T>(createIterator: () => Iterator<T>): Iterable<T>;