export declare const MAX_GOOGLE_PROVIDER_METADATA_BYTES: number;
export declare function readGoogleThoughtSignature(part: Record<string, unknown>): string | undefined;
export declare function createGoogleProviderMetadata(parts: Array<Record<string, unknown>>, groundingMetadata?: Record<string, unknown>, rawAssistantPartIndexes?: readonly number[]): Record<string, unknown> | undefined;
export type GoogleRawAssistantReplay = {
    parts: readonly Record<string, unknown>[];
    partIndexes: readonly number[];
};
export declare function readGoogleRawAssistantReplay(providerMetadata: Record<string, unknown> | undefined): GoogleRawAssistantReplay | undefined;
export declare function readGoogleRawAssistantParts(providerMetadata: Record<string, unknown> | undefined): readonly Record<string, unknown>[] | undefined;
/**
 * Remove provider tool parts that the runtime deliberately suppressed while
 * preserving the exact signed parts for every surviving Google tool call.
 */
export declare function reconcileGoogleProviderMetadata(providerMetadata: Record<string, unknown>, suppressedToolCalls: readonly {
    id: string;
    name: string;
}[]): Record<string, unknown> | undefined;
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