PR-780243: adding only one source of truth.

jest.config.js

@@ -1,6 +1,15 @@
+const { pathsToModuleNameMapper } = require('ts-jest');
+const { compilerOptions } = require('./tsconfig');
+
+const aliases = pathsToModuleNameMapper(compilerOptions.paths, {
+	prefix: '<rootDir>'
+});
+
 module.exports = {
     testEnvironment: 'node',
     transform: {
       "^.+\\.ts$": "ts-jest"
+    },moduleNameMapper: {
+      ...aliases,
     },
 };