fix(core): update

ts/index.ts

@@ -84,4 +84,17 @@ export class SmartVersion {
     const newInstance = new SmartVersion(`${this.semver.major + 1}.${this.semver.minor}.${this.semver.patch}`);
     return newInstance;
   }
+
+  public getNewVersion(typeArg: 'patch' | 'minor' | 'major') {
+    switch (typeArg) {
+      case 'patch':
+        return this.getNewPatchVersion();
+      case 'minor':
+        return this.getNewMinorVersion();
+      case 'major':
+        return this.getNewMajorVersion();
+      default:
+        throw new Error('unknown new version type.');
+    }
+  }
 }