/**
 * Attribute operation
 * @hidden
 */
export interface AttributeOperation {
    /**
     * The operation name.
     */
    action: string;
    /**
     * The attribute key.
     */
    key: string;
    /**
     * The instance id.
     */
    instance_id?: string;
    /**
     * Expiration for json attributes.
     */
    expiration_milliseconds?: number;
    /**
     * The attribute value, if available.
     */
    value?: any;
    /**
     * The attribute type, if available.
     */
    type?: 'string' | 'number' | 'date' | 'json';
}
/**
 * Editor for attributes.
 */
export declare class AttributeEditor {
    onApply: (operations: AttributeOperation[]) => Promise<void>;
    operations: AttributeOperation[];
    /**
     * AttributeEditor constructor
     *
     * @hidden
     * @param onApply The apply function
     */
    constructor(onApply: (operations: AttributeOperation[]) => Promise<void>);
    /**
     * Adds an attribute.
     *
     * @param value The attribute value.
     * @param name The attribute name.
     * @return The attribute editor instance.
     */
    setAttribute(name: string, value: string | number | boolean | Date): AttributeEditor;
    /**
    * Adds a JSON attribute.
    *
    * @param name The attribute name.
    * @param value The attribute value.
    * @param instanceId The instance ID.
    * @param json The json value. Must not contain `exp` as top level key.
    * @param expiration: Optional expiration.
    * @return The attribute editor instance.
    */
    setJsonAttribute(name: string, instanceId: string, json: Record<string, any>, expiration?: Date): AttributeEditor;
    /**
     * Removes an attribute.
     * @param name The name of the attribute to remove.
     * @return The attribute editor instance.
     */
    removeAttribute(name: string): AttributeEditor;
    /**
     * Removes a JSON attribute.
     * @param name The name of the attribute to remove.
     * @param instanceId The instance ID.
     * @return The attribute editor instance.
     */
    removeJsonAttribute(name: string, instanceId: string): AttributeEditor;
    /**
     * Applies the attribute operations.
     */
    apply(): Promise<void>;
}