import { UnionPredicate } from 'optimal';
import { Config, Options } from './types';
export default class Definition<T extends Config> {
    options: Options;
    attribute: string;
    config: T;
    /**
     * Represents a type definition for an attribute.
     */
    constructor(options: Options, attribute: string, config?: Partial<T>, validate?: boolean);
    /**
     * Create an option for type definitions that can be a string or object.
     */
    createUnionType(defaultValue?: string | {
        type: string;
    }): UnionPredicate<string | {
        type: string;
    }>;
    /**
     * Returns true if the attribute allows nulls.
     */
    isNullable(): boolean;
    /**
     * Returns true if the attribute is not required.
     */
    isOptional(): boolean;
    /**
     * Validate the definition configuration.
     */
    validateConfig(): void;
}
//# sourceMappingURL=Definition.d.ts.map