import { Collection } from "@tsplus/stdlib/collections/Collection/definition";
import { Maybe } from "@tsplus/stdlib/data/Maybe/definition";
import { Effect } from "@effect/core/io/Effect/definition";
import { Chunk } from "@tsplus/stdlib/collections/Chunk/definition";
/**
 * Transforms all elements of the chunk for as long as the specified partial
 * function is defined.
 * @tsplus static effect/core/io/Effect.Ops collectWhile
 * @tsplus location "@effect/core/io/Effect/operations/collectWhile"
 */
export declare function collectWhile<A, R, E, B>(self: Collection<A>, f: (a: A) => Maybe<Effect<R, E, B>>): Effect<R, E, Chunk<B>>;
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