import { Failure } from '../base';
import { GenericValidator, GenericValidatorConstructorParams } from './genericValidator';
/**
 * Parameters used to construct a {@link Validation.Classes.StringValidator | StringValidator}.
 * @public
 */
export type StringValidatorConstructorParams<T extends string = string, TC = unknown> = GenericValidatorConstructorParams<T, TC>;
/**
 * An in-place {@link Validation.Validator | Validator} for `string` values.
 * @public
 */
export declare class StringValidator<T extends string = string, TC = unknown> extends GenericValidator<T, TC> {
    /**
     * Constructs a new {@link Validation.Classes.StringValidator | StringValidator}.
     * @param params - Optional {@link Validation.Classes.StringValidatorConstructorParams | init params}
     * for the new {@link Validation.Classes.StringValidator | StringValidator}.
     */
    constructor(params?: StringValidatorConstructorParams<T, TC>);
    /**
     * Static method which validates that a supplied `unknown` value is a `string`.
     * @param from - The `unknown` value to be tested.
     * @returns Returns `true` if `from` is a `string`, or {@link Failure} with an error
     * message if not.
     */
    static validateString<T extends string>(from: unknown): boolean | Failure<T>;
}
//# sourceMappingURL=string.d.ts.map