import { array, ArraySchema } from './array';
import { boolean, BooleanSchema } from './boolean';
import { date, DateSchema } from './date';
import { mixed, MixedSchema } from './mixed';
import { number, NumberSchema } from './number';
import { object, ObjectSchema } from './object';
import { string, StringSchema } from './string';
export declare function addMethod<TSchemaType extends typeof mixed | typeof string | typeof number | typeof boolean | typeof date | typeof array | typeof object, TSchema extends TSchemaType extends typeof mixed ? MixedSchema : TSchemaType extends typeof string ? StringSchema : TSchemaType extends typeof number ? NumberSchema : TSchemaType extends typeof boolean ? BooleanSchema : TSchemaType extends typeof date ? DateSchema : TSchemaType extends typeof array ? ArraySchema : TSchemaType extends typeof object ? ObjectSchema : MixedSchema>(schemaType: TSchemaType, name: string, fn: (this: TSchema, ...args: any[]) => TSchema): void;