import type { ChatProviderModelInputMessage } from "./provider-input-types.js";
export declare function isTransientToolState(state: string | undefined): boolean;
/** Tool replay parts that are valid to expose to provider conversion. */
export type ProviderVisibleToolReplayMatches = {
    preservedTransientToolParts: WeakSet<object>;
    matchedToolCallParts: WeakSet<object>;
    matchedToolResultParts: WeakSet<object>;
    matchedToolResultNames: WeakMap<object, string>;
    toolCallPartsStartingNewBatch: WeakSet<object>;
    supersededToolCallParts: WeakSet<object>;
    supersededToolResultParts: WeakSet<object>;
};
/** Find adjacent replay call/result occurrences using part object identity. */
export declare function findProviderVisibleToolReplayMatches(messages: readonly ChatProviderModelInputMessage[]): ProviderVisibleToolReplayMatches;
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