Added more specific types for the encoding

Author: gignupg

src/config/languageObject.js

@@ -388,6 +388,8 @@ module.exports = [
         utfFrequency: { low: 0.003194, high: 0.003468 },
         isoFrequency: { low: 0.002091, high: 0.002303 }
     },
+    // The following languages don't seem to have their own encoding
+    // Subtitle files in these languages seem to almost exclusively use UTF encoding.
     {
         name: "bengali",
         count: 0,

src/index-node.d.ts

@@ -1,11 +1,11 @@
 export interface FileInfo {
-    encoding: null | string,
-    language: null | string,
+    encoding: null | 'UTF-EBCDIC' | 'GB-18030' | 'GB18030' | 'UTF-32LE' | 'UTF-32BE' | 'UTF-8' | 'UTF-7' | 'UTF-1' | 'SCSU' | 'BOCU-1' | 'UTF-16BE' | 'UTF-16LE' | 'latin1' | 'ISO-8859-1' | 'CP1250' | 'CP1251' | 'CP1252' | 'CP1253' | 'CP1254' | 'CP1255' | 'CP1256' | 'CP1257' | 'BIG5' | 'Shift-JIS' | 'EUC-KR' | 'TIS-620';
+    language: null | string;
     confidence: {
-        encoding: null | string,
-        language: null | string,
+        encoding: null | number;
+        language: null | number;
     },
 }
 
-declare function DetectFileEncodingAndLanguage(file: File): Promise<FileInfo>
+declare function DetectFileEncodingAndLanguage(file: File): Promise<FileInfo>;
 export default DetectFileEncodingAndLanguage;