method Server.prototype.once
#Server.prototype.once(event: string,listener: (...args: any[]) => void,): this#Server.prototype.once(event: "close",listener: () => void,): this#Server.prototype.once(event: "error",listener: (err: Error) => void,): this#Server.prototype.once(event: "listening",listener: () => void,): this#Server.prototype.once(event: "drop",listener: (data?: DropArgument) => void,): thisParameters #
#event: "drop"#listener: (data?: DropArgument) => voidReturn Type #
this