import type { MigrationImage, MigrationLinkToMedia, MigrationRTImageNode } from "../types/migration/Asset";
import type { MigrationContentRelationship } from "../types/migration/ContentRelationship";
import { type InjectMigrationSpecificTypes } from "../types/migration/Document";
import type { PrismicDocument } from "../types/value/document";
import type { GroupField } from "../types/value/group";
import type { OptionalLinkProperties } from "../types/value/link";
import type { SliceZone } from "../types/value/sliceZone";
import type { AnyRegularField } from "../types/value/types";
/**
 * Unknown value to check if it's a specific field type.
 *
 * @remarks
 * Explicit types are added to help ensure narrowing is done effectively.
 */
type UnknownValue = PrismicDocument | InjectMigrationSpecificTypes<AnyRegularField | GroupField | SliceZone> | unknown;
/**
 * Checks if a value is a migration content relationship field.
 *
 * @remarks
 * `OptionalLinkProperties` is included because `MigrationContentRelationship`
 * may be a link field, not strictly a content relationship field.
 *
 * @param value - Value to check.
 *
 * @returns `true` if `value` is a migration content relationship field, `false`
 *   otherwise.
 *
 * @internal
 * This is not an official helper function and it's only designed to work with internal processes.
 */
export declare const contentRelationship: (value: UnknownValue) => value is MigrationContentRelationship & OptionalLinkProperties;
/**
 * Checks if a value is a migration image field.
 *
 * @param value - Value to check.
 *
 * @returns `true` if `value` is a migration image field, `false` otherwise.
 *
 * @internal
 * This is not an official helper function and it's only designed to work with internal processes.
 */
export declare const image: (value: UnknownValue) => value is MigrationImage;
/**
 * Checks if a value is a migration link to media field.
 *
 * - @remarks `OptionalLinkProperties` is included because
 *   `MigrationContentRelationship` may be a link field, not strictly a content
 *   relationship field.
 *
 * @param value - Value to check.
 *
 * @returns `true` if `value` is a migration link to media field, `false`
 *   otherwise.
 *
 * @internal
 * This is not an official helper function and it's only designed to work with internal processes.
 */
export declare const linkToMedia: (value: UnknownValue) => value is MigrationLinkToMedia & OptionalLinkProperties;
/**
 * Checks if a value is a migration rich text image node.
 *
 * @param value - Value to check.
 *
 * @returns `true` if `value` is a migration rich text image node, `false`
 *   otherwise.
 *
 * @internal
 * This is not an official helper function and it's only designed to work with internal processes.
 */
export declare const rtImageNode: (value: UnknownValue) => value is MigrationRTImageNode;
export {};