import { z } from 'zod';
import { PossibleLanguageValue2Schema, Metadata2Schema, MetadataItem2Schema, Thumbnail2Schema, Rendering2Schema, Related2Schema, Attribution2Schema } from '../schemas/presentation.2.js';
import { LanguageValue3Schema, Metadata3Schema, MetadataItem3Schema } from '../schemas/presentation.3.js';
import type { LanguageString, Metadata, MetadataItem, RequiredStatement, Thumbnail, Rendering, Homepage } from './types.js';
type Metadata2 = z.infer<typeof Metadata2Schema>;
type MetadataItem2 = z.infer<typeof MetadataItem2Schema>;
type Metadata3 = z.infer<typeof Metadata3Schema>;
type MetadataItem3 = z.infer<typeof MetadataItem3Schema>;
export declare const LanguageString3Schema: z.ZodRecord<z.ZodString, z.ZodArray<z.ZodString, "many">>;
export declare const MetadataStringItem3Schema: z.ZodObject<{
    label: z.ZodOptional<z.ZodRecord<z.ZodString, z.ZodArray<z.ZodString, "many">>>;
    value: z.ZodOptional<z.ZodRecord<z.ZodString, z.ZodArray<z.ZodString, "many">>>;
}, "strip", z.ZodTypeAny, {
    value?: Record<string, string[]> | undefined;
    label?: Record<string, string[]> | undefined;
}, {
    value?: Record<string, string[]> | undefined;
    label?: Record<string, string[]> | undefined;
}>;
type LanguageValue3 = z.infer<typeof LanguageValue3Schema>;
type PossibleLanguageValue2 = z.infer<typeof PossibleLanguageValue2Schema>;
type Thumbnail2 = z.infer<typeof Thumbnail2Schema>;
type Rendering2 = z.infer<typeof Rendering2Schema>;
type Related2 = z.infer<typeof Related2Schema>;
type Attribution2 = z.infer<typeof Attribution2Schema>;
export declare function ensureArray<T>(val: T | T[]): T[] | undefined;
export declare function parseVersion2String(str?: PossibleLanguageValue2): LanguageString | undefined;
export declare function parseVersion3String(str?: LanguageValue3): LanguageString | undefined;
export declare function parseMetadata2Item(item?: MetadataItem2): MetadataItem | undefined;
export declare function parseMetadata3Item(item?: MetadataItem3): MetadataItem | undefined;
export declare function isValidMetadataItem(item?: MetadataItem): item is MetadataItem;
export declare function parseVersion2Metadata(metadata?: Metadata2): Metadata | undefined;
export declare function parseVersion3Metadata(metadata?: Metadata3): Metadata | undefined;
export declare function parseVersion2Attribution(attribution?: Attribution2): RequiredStatement | undefined;
export declare function parseVersion2Thumbnail(thumbnail2?: Thumbnail2): Thumbnail | undefined;
export declare function parseVersion2Rendering(rendering2?: Rendering2): Rendering | undefined;
export declare function parseVersion2Related(related?: Related2): Homepage | undefined;
export {};