Catch regex match issue

src/commands/extract-to-se.js

@@ -4,32 +4,32 @@ const acceptedPatternMappings = [
     {
         name: 'Full match',
         pattern: /([Ss][0-9]+[Ee][0-9]+)/,
-        mapper: (matches) => `${matches[0]}`,
+        mapper: (matches) => `${matches[1]}`,
     },
     {
         name: 'Space separated single number',
         pattern: / ([0-9][0-9]+) /,
-        mapper: (matches) => `S01E${matches[0]}`,
+        mapper: (matches) => `S01E${matches[1]}`,
     },
     {
         name: 'End of filename number, leading space',
         pattern: / ([0-9][0-9]+)\./,
-        mapper: (matches) => `S01E${matches[0]}`,
+        mapper: (matches) => `S01E${matches[1]}`,
     },
     {
         name: 'Underscore separated number',
         pattern: /_([0-9][0-9]+)_/,
-        mapper: (matches) => `S01E${matches[0]}`,
+        mapper: (matches) => `S01E${matches[1]}`,
     },
     {
         name: 'End of filename number, leading underscore',
         pattern: /_([0-9][0-9]+)\./,
-        mapper: (matches) => `S01E${matches[0]}`,
+        mapper: (matches) => `S01E${matches[1]}`,
     },
     {
         name: 'Any number >= 2 characters',
         pattern: /([0-9][0-9]+)/,
-        mapper: (matches) => `S01E${matches[0]}`,
+        mapper: (matches) => `S01E${matches[1]}`,
     },
 ];
 
@@ -43,7 +43,7 @@ export async function extractToEpisodeNumber(inputDir, inputFile, outputDir, opt
 
             const extensionMatches = inputFile.match(extensionPattern);
 
-            const extension  = extensionMatches ? extensionMatches[0] : '';
+            const extension  = extensionMatches ? extensionMatches[1] : '';
 
             const toWrite = `${outputDir}${outputFileName}${extension}`;