/** Primitive value types reported in media generation normalization metadata. */
export type MediaNormalizationValue = string | number | boolean;
/** Requested/applied value pair plus provenance for a normalized media option. */
export type MediaNormalizationEntry<TValue extends MediaNormalizationValue> = {
    requested?: TValue;
    applied?: TValue;
    derivedFrom?: string;
    supportedValues?: readonly TValue[];
};
/** Normalization metadata shared by media generation responses. */
export type MediaGenerationNormalizationMetadataInput = {
    size?: MediaNormalizationEntry<string>;
    aspectRatio?: MediaNormalizationEntry<string>;
    resolution?: MediaNormalizationEntry<string>;
    durationSeconds?: MediaNormalizationEntry<number>;
};
/** True when a normalization entry contains any user-visible normalization metadata. */
export declare function hasMediaNormalizationEntry<TValue extends MediaNormalizationValue>(entry: MediaNormalizationEntry<TValue> | undefined): entry is MediaNormalizationEntry<TValue>;