import { AbstractObjectSchema } from "./schema";
/**
 * String schema
 */
export declare class StringObjectSchema extends AbstractObjectSchema {
    /**
     * Creates string schema
     * @returns a new instance of StringObjectSchema
     */
    static create(): StringObjectSchema;
    private schema;
    /**
     * Constructor
     */
    constructor();
    /**
     * Sets default value, in case the object is null, undefined or cannot be parsed
     * @param defaultValue The default value
     * @returns self
     */
    withDefaultValue(defaultValue: string): StringObjectSchema;
    /**
     * Sets max length for the string. If the string length is greater than this value, it will be truncated.
     * @param maxLength The max length for the string.
     * @returns self
     */
    withMaxLength(maxLength: number): StringObjectSchema;
    /**
     * Sets a regular expression the string must match
     * @param regExp The regular expression
     * @returns self
     */
    withRegularExpression(regExp: RegExp): StringObjectSchema;
    /**
     * Sets an enumeration of allowed values
     * @param enumeration The enumeration
     * @returns self
     */
    withEnumeration(enumeration: string[]): StringObjectSchema;
}