export type HttpMethod = "get" | "post" | "put" | "patch" | "delete";
export type Url = string;
export type PhoneNumber = string;
export type PhoneNumberCapabilities = {
    mms: boolean;
    sms: boolean;
    voice: boolean;
    fax: boolean;
};
export type Sid = string;
export interface ListEachOptions<TInstance> {
    /**
     * Upper limit for the number of records to return.
     * each() guarantees never to return more than limit.
     * Default is no limit
     */
    limit?: number;
    /**
     * Number of records to fetch per request,
     * when not set will use the default value of 50 records.
     * If no pageSize is defined but a limit is defined,
     * each() will attempt to read the limit with the most efficient
     * page size, i.e. min(limit, 1000)
     */
    pageSize?: number;
    /**
     * Function to process each record. If this and a positional
     * callback are passed, this one will be used
     */
    callback?: (item: TInstance, done: (err?: Error) => void) => void;
    /**
     * Function to be called upon completion of streaming
     */
    done?: (err?: Error) => void;
}
export interface ListOptions<TInstance> {
    /**
     * Upper limit for the number of records to return.
     * each() guarantees never to return more than limit.
     * Default is no limit
     */
    limit?: number;
    /**
     * Number of records to fetch per request,
     * when not set will use the default value of 50 records.
     * If no pageSize is defined but a limit is defined,
     * each() will attempt to read the limit with the most efficient
     * page size, i.e. min(limit, 1000)
     */
    pageSize?: number;
    /**
     * Callback to handle list of records
     */
    callback?: (items: TInstance[]) => void;
}
export interface PageOptions<TPage> {
    /**
     * PageToken provided by the API
     */
    pageToken?: string;
    /**
     * Page Number, this value is simply for client state
     */
    pageNumber?: number;
    /**
     * Number of records to return, defaults to 50
     */
    pageSize?: number;
    /**
     * Callback to handle list of records
     */
    callback?: (page: TPage) => void;
}
/**
 * A generic type that returns all property names of a class whose type is not "function"
 */
export type NonFunctionPropertyNames<T> = {
    [K in keyof T]: T[K] extends Function ? never : K;
}[keyof T];
/**
 * A generic type that returns only properties of a class that are not functions
 */
export type NonFunctionProperties<T> = Pick<T, NonFunctionPropertyNames<T>>;
/**
 * A type alias for better readibility
 */
export type Json<T> = NonFunctionProperties<T>;
export declare class SerializableClass {
    /**
     * Converts the current instance in a regular JSON.
     * It will be automatically called by JSON.stringify()
     */
    toJSON(): Json<this>;
}