Figured it out

Author: georgeboot

jest.config.js

@@ -3,4 +3,7 @@ module.exports = {
         '^.+\\.tsx?$': 'ts-jest',
     },
     moduleFileExtensions: ['ts', 'tsx', 'js', 'jsx', 'json', 'node', 'd.ts'],
+    transformIgnorePatterns: [
+        'node_modules/(?!(laravel-echo)/)',
+    ],
 };

js-tests/Connector.test.ts

@@ -1,5 +1,5 @@
 import WS from "jest-websocket-mock";
-import {Connector} from "../dist/Connector";
+import {Connector} from "../js-src/Connector";
 
 describe('Connector', () => {
     let server;