add testing of writeSQL function with Jest testing library

Author: Dagogo-Clinton-Uranta

.babelrc.cjs

@@ -0,0 +1,6 @@
+module.exports = {
+  presets: [
+    '@babel/preset-env',
+  ]
+  
+};

babel.config.cjs

@@ -0,0 +1,12 @@
+module.exports = {
+    presets: [
+      [
+        '@babel/preset-env',
+        {
+          targets: {
+            node: 'current',
+          },
+        },
+      ],
+    ],
+  };

jest.config.ts

@@ -0,0 +1,21 @@
+import type { Config } from '@jest/types'
+
+
+
+/**   @type {import('ts-jest').JestConfigWithTsJest} */
+
+const config: Config.InitialOptions =  {
+  preset: 'ts-jest/presets/default-esm',
+  testEnvironment: 'node',
+  verbose:true,
+  extensionsToTreatAsEsm: ['.ts'],
+  transform: {
+    "^.+\\.jsx?$": "babel-jest"
+  },
+  
+  transformIgnorePatterns: ['<rootDir>/node_modules/'],
+  };
+
+
+
+export default config