Подключил декодер html-entities

client/components/Reader/share/BookParser.js

@@ -1,3 +1,4 @@
+import he from 'he';
 import sax from '../../../../server/core/BookConverter/sax';
 import {sleep} from '../../../share/utils';
 
@@ -134,7 +135,8 @@ export default class BookParser {
         };
 
         const onTextNode = (text) => {// eslint-disable-line no-unused-vars
-            text = text.replace(/ |[\t\n\r]/g, ' ');
+            text = he.decode(text);
+            text = text.replace(/[\t\n\r]/g, ' ');
 
             if (text != ' ' && text.trim() == '')
                 text = text.trim();

package-lock.json

@@ -5230,8 +5230,7 @@
     "he": {
       "version": "1.2.0",
       "resolved": "https://registry.npmjs.org/he/-/he-1.2.0.tgz",
-      "integrity": "sha512-F/1DnUGPopORZi0ni+CvrCgHQ5FyEAHRLSApuYWMmrbSwoN2Mn/7k+Gl38gJnR7yyDZk6WLXwiGod1JOWNDKGw==",
-      "dev": true
+      "integrity": "sha512-F/1DnUGPopORZi0ni+CvrCgHQ5FyEAHRLSApuYWMmrbSwoN2Mn/7k+Gl38gJnR7yyDZk6WLXwiGod1JOWNDKGw=="
     },
     "hex-color-regex": {
       "version": "1.1.0",

package.json

@@ -66,6 +66,7 @@
     "fg-loadcss": "^2.1.0",
     "fs-extra": "^7.0.1",
     "got": "^9.5.1",
+    "he": "^1.2.0",
     "iconv-lite": "^0.4.24",
     "localforage": "^1.7.3",
     "lodash": "^4.17.11",