import { TypeDescription } from '../types';
type Mutator<T> = (x: T | null) => unknown;
export type BasicType = string | number | boolean | object | Date | Function;
export type Value<T> = T extends BasicType ? BasicType : T;
/**
 * Creates anonymous variables by description of T.
 */
export declare class SpecimenFactory<T> {
    private readonly input;
    private readonly mutators;
    private readonly arrayValueCount;
    /**
     * @param input The description of type to create.
     */
    constructor(input: TypeDescription);
    /**
     * Creates an variable of the requested type.
     * @returns An anonymous variable of type T.
     */
    create(): T;
    /**
     * Creates many anonymous objects.
     * @returns A sequence of anonymous object of type T.
     */
    createMany(minCount?: number, maxCount?: number): T[];
    /**
     * Registers that a writable property or field should be assigned an anonymous value
     * as part of specimen post-processing.
     * @param func An expression that identifies the property or field that will should have a value assigned.
     */
    with(func: Mutator<T>): this;
    private generate;
    private generatePropertyValue;
    private generatePropertiesValues;
    private generateValue;
}
export {};