fix(types): optional parameters are marked as required

XDCC constructor's parameter type wasn't matching the Bridge class

src/bridge.ts

@@ -2,7 +2,7 @@ import Downloader, { ParamsDL } from './downloader';
 import humanFileSize from './lib/progress/humanFileSize';
 
 export default class Bridge extends Downloader {
-  constructor(params: ParamsDL) {
+  constructor(params: Partial<ParamsDL>) {
     const testedParams = Bridge.checkParams(params);
 
     super(testedParams);

src/downloader.ts

@@ -13,7 +13,7 @@ import * as ProgressBar from './lib/progress';
 export type ParamsDL = ParamsCTCP & {
   /**
    * Array of ports for passive DCC
-   * @default 5001
+   * @default [5001]
    * @remark Some xdcc bots use passive dcc, this require to have these ports opened on your computer/router/firewall
    * @example
    * ```js

src/index.ts

@@ -196,7 +196,7 @@ export default class XDCC extends EventEmitter<GlobalMessageEvents> {
 
   whowas: (target: string, cb: (event: Event) => any) => void;
 
-  constructor(params: Params) {
+  constructor(params: Partial<ParamsDL> & { host: string }) {
     // eslint-disable-next-line constructor-super
     super();
     this.irc = new Bridge(params);