import { Entity } from '@rest-hooks/endpoint';
import { AbstractInstanceType } from '@rest-hooks/endpoint';
type Filter<T, U> = T extends U ? T : never;
/** Immutable record that keeps track of which members are defined vs defaults. */
export default abstract class EntityRecord extends Entity {
    toString(): string;
    /** Factory method to convert from Plain JS Objects.
     *
     * @param [props] Plain Object of properties to assign.
     * @param [parent] When normalizing, the object which included the record
     * @param [key] When normalizing, the key where this record was found
     */
    static fromJS<T extends typeof Entity>(this: T, props?: Partial<AbstractInstanceType<T>>): AbstractInstanceType<T>;
    /** Creates new instance copying over defined values of arguments */
    static mergeRecord<T extends typeof Entity>(this: T, existing: AbstractInstanceType<T>, incoming: AbstractInstanceType<T>): AbstractInstanceType<T>;
    /** Whether key is non-default */
    static hasDefined<T extends typeof EntityRecord>(this: T, instance: AbstractInstanceType<T>, key: Filter<keyof AbstractInstanceType<T>, string>): boolean;
    /** Returns simple object with all the non-default members */
    static toObjectDefined<T extends typeof EntityRecord>(this: T, instance: AbstractInstanceType<T>): Partial<AbstractInstanceType<T>>;
    /** Returns array of all keys that have values defined in instance */
    static keysDefined<T extends typeof EntityRecord>(this: T, instance: AbstractInstanceType<T>): Filter<keyof AbstractInstanceType<T>, string>[];
    /** Used by denormalize to set nested members */
    protected static set(entity: any, key: string, value: any): void;
}
export {};
//# sourceMappingURL=EntityRecord.d.ts.map