import { Predicate } from "@tsplus/stdlib/data/Predicate";
import { Chunk } from "@tsplus/stdlib/collections/Chunk/definition";
import { Maybe } from "@tsplus/stdlib/data/Maybe/definition";
/**
 * Returns the index of the first element that satisfies the predicate.
 * @tsplus static Chunk.Aspects findIndex
 * @tsplus pipeable Chunk findIndex
 * @tsplus location "@tsplus/stdlib/collections/Chunk/operations/findIndex"
 */
export declare function findIndex<A>(f: Predicate<A>): (self: Chunk<A>) => Maybe<number>;
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