Feature/jest2 (#322)

* Adding more tests
* adding jest
* fixing tests
* fixing linting
* removing 1 slash less
* fixing more tests
* fixing last test
* more last fixes

eslint.config.mjs

@@ -0,0 +1,28 @@
+import eslint from "@eslint/js";
+import tseslint from "typescript-eslint";
+
+export default tseslint.config(
+  {
+    ignores: [
+      '**/coverage/*',
+      '**/lib/*',
+      '**/node_modules/*',
+      'lib/*'
+    ],
+  },
+  {
+    files: ["**/*.ts"],
+
+    extends: [eslint.configs.recommended, ...tseslint.configs.recommended],
+    plugins: {
+      jest: {},
+    },
+  },
+  {
+    rules: {
+      "@typescript-eslint/no-namespace": "off",
+      "@typescript-eslint/no-explicit-any": "off",
+      "no-case-declarations": "off",
+    },
+  }
+);