import { Element } from "./element";
export type AttributeOptions = {
    /**
     * Set this to true to allow null values.
     *
     * When non-nullable, default values will be assigned to the
     * attribute accessor when null.
     */
    nullable?: boolean;
    /**
     * By default the decorated property name will be used as the
     * attribute name.
     *
     * By specifying this option, you can override that value.
     *
     * Attribute name will always be converted to lowercase.
     */
    name?: string;
} & ({
    type: "boolean";
    /**
     * When non-nullable defines the value that will be used when
     * the attribute is set to null.
     *
     * If not specified `false` will be used.
     */
    default?: boolean;
} | {
    type: "number";
    /**
     * When non-nullable defines the value that will be used when
     * the attribute is set to null.
     *
     * If not specified `0` will be used.
     */
    default?: number;
} | {
    type?: "string" | undefined;
    /**
     * When non-nullable defines the value that will be used when
     * the attribute is set to null.
     *
     * If not specified `""` will be used.
     */
    default?: string;
});
export declare function Attribute(opts?: AttributeOptions): <E extends Element, V>(accessor: ClassAccessorDecoratorTarget<E, V>, context: ClassAccessorDecoratorContext<E, V>) => ClassAccessorDecoratorResult<E, V>;