Noissue - Update JSDoc @type for Matcher.filterByKeyword

lib/matcher.js

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-present eyeo GmbH
  *
  * Adblock Plus is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 3 as
  * published by the Free Software Foundation.
  *
  * Adblock Plus is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 19 matching lines @@
  */
 function Matcher()
 {
   this.clear();
 }
 exports.Matcher = Matcher;
 
 Matcher.prototype = {
   /**
    * Lookup table for filters by their associated keyword
-   * @type {Map.<string,Filter>}
+   * @type {Map.<string,(Filter|Filter[])>}

[Manish Jethani, 2018/05/02 21:03:54]

This can be a filter or an array of filters. I was confused when I saw this,
especially because of the 1-filter optimization (see the length and "0"
properties in lib/filterClasses.js).

    */
   filterByKeyword: null,
 
   /**
    * Lookup table for keywords by the filter
    * @type {Map.<Filter,string>}
    */
   keywordByFilter: null,
 
   /**
@@ skipping 373 matching lines @@
 
     return result;
   }
 };
 
 /**
  * Shared CombinedMatcher instance that should usually be used.
  * @type {CombinedMatcher}
  */
 exports.defaultMatcher = new CombinedMatcher();