Support new unity versioning scheme with regex matching groups

src/model/unity-version-parser.test.ts

@@ -11,6 +11,12 @@ describe('UnityVersionParser', () => {
       m_EditorVersionWithRevision: 2022.3.7f1 (b16b3b16c7a0)`;
       expect(UnityVersionParser.parse(projectVersionContents)).toBe('2022.3.7f1');
     });
+
+    it('parses Unity 6000 and newer from ProjectVersion.txt', () => {
+      const projectVersionContents = `m_EditorVersion: 6000.0.0f1
+      m_EditorVersionWithRevision: 6000.0.0f1 (cb45f9cae8b7)`;
+      expect(UnityVersionParser.parse(projectVersionContents)).toBe('6000.0.0f1');
+    });
   });
 
   describe('read', () => {

src/model/unity-version-parser.ts

@@ -2,16 +2,15 @@ import fs from 'fs';
 import path from 'path';
 
 const UnityVersionParser = {
-  get versionPattern() {
-    return /20\d{2}\.\d\.\w{3,4}|3/;
-  },
-
   parse(projectVersionTxt) {
-    const matches = projectVersionTxt.match(UnityVersionParser.versionPattern);
-    if (!matches || matches.length === 0) {
-      throw new Error(`Failed to parse version from "${projectVersionTxt}".`);
+    const versionRegex = /m_EditorVersion: (\d+\.\d+\.\d+[A-Za-z]?\d+)/;
+    const matches = projectVersionTxt.match(versionRegex);
+
+    if (!matches || matches.length < 2) {
+      throw new Error(`Failed to extract version from "${projectVersionTxt}".`);
     }
-    return matches[0];
+
+    return matches[1];
   },
 
   read(projectPath) {