switched to yarn, and started adding tests

Added tests for process job service so far... its a start..

src/node/consumer/jest.config.cjs

@@ -0,0 +1,11 @@
+const { pathsToModuleNameMapper } = require('ts-jest');
+const { compilerOptions } = require('./tsconfig.json');
+
+module.exports = {
+    preset: 'ts-jest',
+    testEnvironment: 'node',
+    moduleNameMapper: pathsToModuleNameMapper(compilerOptions.paths, { prefix: '<rootDir>/src/' }),
+    modulePaths: [
+        '<rootDir>'
+    ],
+};