Migrate to version 2 of nodes.json and start adding tests

jest.server.config.js

@@ -0,0 +1,10 @@
+module.exports = {
+    preset: 'ts-jest',
+    testEnvironment: 'node',
+    roots: ['<rootDir>/server'],
+    globals: {
+        'ts-jest': {
+            tsConfig: '<rootDir>/server/tsconfig.json'
+        }
+    }
+};