import { PopulateSelectBaseType } from '../model/populate.types';
import { Schema } from '../schema';
export declare const extractSchemaReferencesFields: (schema: Schema) => any;
export declare const extractSchemaReferencesFromGivenFields: (fields: any, schema: Schema) => any;
export declare const getSchemaType: (fieldName: any, schema: any) => any;
export declare const extractPopulateFieldsFromObject: ({ select, populate }: PopulateSelectBaseType) => string[];