Cleanup and updates based on feedback

Author: michaelw85

features/makejson.feature

@@ -985,7 +985,7 @@ Feature: Split PO files into JSON files.
     And the return code should be 0
     And the foo-theme/my-custom-domain-de_DE-557240f2080a0894dbd39f5c2f559bf8.json file should exist
 
-  Scenario: Should only proces js/min.js extensions by default
+  Scenario: Should only process js/min.js extensions by default
     Given an empty foo-theme directory
     And a foo-theme/de_DE.po file:
       """
@@ -1010,7 +1010,7 @@ Feature: Split PO files into JSON files.
       msgid "Foo Theme"
       msgstr "Foo Theme"
 
-      #: bar-minified.min.js:15
+      #: bar.min.minified.min.js:15
       msgid "Foo Theme"
       msgstr "Foo Theme"
 
@@ -1030,7 +1030,7 @@ Feature: Split PO files into JSON files.
       """
     And the return code should be 0
     And the foo-theme/foo-theme-de_DE-557240f2080a0894dbd39f5c2f559bf8.json file should exist
-    And the foo-theme/foo-theme-de_DE-da8cc4943ac0f9e5cc173c7de3f7299d.json file should exist
+    And the foo-theme/foo-theme-de_DE-a9c6627f5fe96185c0a0d0ddd8fa0216.json file should exist
 
   Scenario: Allows processing custom file extensions
     Given an empty foo-theme directory

foo/empty.mo

@@ -263,11 +263,12 @@ protected function make_json( $source_file, $destination, $map, $domain, $extens
 			// Find all unique sources this translation originates from.
 			$sources = array_map(
 				static function ( $reference ) use ( $extensions ) {
-					$file = $reference[0];
-
+					$file      = $reference[0];
 					$extension = pathinfo( $file, PATHINFO_EXTENSION );
 
-					return in_array( $extension, $extensions, true ) ? str_replace( '.min.', '.', $file ) : null;
+					return in_array( $extension, $extensions, true )
+						? preg_replace( "/.min.{$extension}$/", ".{$extension}", $file )
+						: null;
 				},
 				$this->reference_map( $translation->getReferences(), $map )
 			);