import { PredicateWithIndex } from "@tsplus/stdlib/utilities/Types";
import { ImmutableArray } from "@tsplus/stdlib/collections/ImmutableArray/definition";
/**
 * Separate elements based on a predicate that also exposes the index.
 * @tsplus static ImmutableArray.Aspects partitionWithIndex
 * @tsplus pipeable ImmutableArray partitionWithIndex
 * @tsplus location "@tsplus/stdlib/collections/ImmutableArray/partitionWithIndex"
 */
export declare function partitionWithIndex<A>(f: PredicateWithIndex<number, A>): (self: ImmutableArray<A>) => readonly [ImmutableArray<A>, ImmutableArray<A>];
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