@shipengine/connect-carrier-api/lib/models/customs/customs-content-types.d.ts

This is the typescript/javascript definitions for carrier api

/** @description Denotes the type of content for customs  */
export declare enum CustomsContentTypes {
    /** @description This is generalized merchandise that someone has purchased */
    Merchandise = "merchandise",
    /** @description Documents that are being shipped */
    Documents = "documents",
    /** @description An item that is being shipped as a gift (not purchased) */
    Gift = "gift",
    /** @description Sample goods that are being shipped */
    Sample = "sample",
    /** @description Items that are being returned */
    ReturnedGoods = "returned_goods",
    /** @description   What other means in case of the shipment*/
    Other = "other"
}