Rewind some typescript knowledge

.eslintrc.js

@@ -3,22 +3,20 @@ module.exports = {
     browser: true,
     es2021: true,
   },
-  extends: [
-    'plugin:react/recommended',
-    'airbnb',
-  ],
-  parser: '@typescript-eslint/parser',
+  extends: ["plugin:react/recommended", "plugin:prettier/recommended"],
+  parser: "@typescript-eslint/parser",
   parserOptions: {
     ecmaFeatures: {
       jsx: true,
     },
-    ecmaVersion: 'latest',
-    sourceType: 'module',
+    ecmaVersion: "latest",
+    sourceType: "module",
   },
   plugins: [
-    'react',
-    '@typescript-eslint',
+    "react",
+    "@typescript-eslint",
   ],
   rules: {
+    quotes: ["error", "double"],
   },
 };

examples/Types/examples.ts

@@ -0,0 +1,44 @@
+type UserPermissionsRole = "admin" | "user" | "manager";
+
+type PermissionsWithoutAdminRole = Exclude<UserPermissionsRole, "admin">;
+
+interface DepartmentsForPermissionRole {
+  depName: string;
+  levelClearence: number;
+}
+
+const DepsForPermission: Record<
+  UserPermissionsRole,
+  DepartmentsForPermissionRole
+> = {
+  admin: {
+    depName: "security engineer",
+    levelClearence: 10,
+  },
+  user: {
+    depName: "Sales Markerting",
+    levelClearence: 5,
+  },
+  manager: {
+    depName: "Marketing",
+    levelClearence: 10,
+  },
+};
+
+type TuplePermissions = [UserPermissionsRole, UserPermissionsRole];
+
+type BasicUser<A = boolean, P = TuplePermissions> = {
+  name: string;
+  surname: string;
+  age: number;
+  isAdmin: A;
+  permissions?: P;
+};
+
+type BasicUserWithoutPermissions = Omit<BasicUser, "permissions">;
+
+export {
+  DepsForPermission,
+  BasicUserWithoutPermissions,
+  PermissionsWithoutAdminRole,
+};