import { IterableX } from '../iterable'; /** * Filters a sequence of values based on a predicate. * @param {Iterable} source Source sequence. * @param {function(value: T, index: number): boolean} predicate A function to test each source element for a condition. * @param {Object} [thisArg] Value to use as this when executing callback. * @return {Iterable} Sequence that contains elements from the input sequence that satisfy the condition. */ export declare function filter(source: Iterable, predicate: (value: T, index: number) => boolean, thisArg?: any): IterableX;