Fix ESLint error "Useless constructor"

Author: tkrotoff

.eslintrc.js

@@ -95,6 +95,14 @@ const config = {
     'no-shadow': 'off',
     '@typescript-eslint/no-shadow': 'error',
 
+    // https://github.com/typescript-eslint/typescript-eslint/blob/v4.5.0/packages/eslint-plugin/docs/rules/no-empty-function.md
+    'no-empty-function': 'off',
+    '@typescript-eslint/no-empty-function': 'error',
+
+    // https://github.com/typescript-eslint/typescript-eslint/blob/v4.5.0/packages/eslint-plugin/docs/rules/no-useless-constructor.md
+    'no-useless-constructor': 'off',
+    '@typescript-eslint/no-useless-constructor': 'error',
+
     '@typescript-eslint/explicit-function-return-type': 'off',
     '@typescript-eslint/no-non-null-assertion': 'off',
     '@typescript-eslint/camelcase': 'off',

packages/react-form-with-constraints/src/Field.ts

@@ -15,8 +15,6 @@ export class Field {
   // Cannot be set as readonly :/
   public element?: HTMLInput | TextInput;
 
-  // FIXME https://github.com/typescript-eslint/typescript-eslint/issues/426
-  // eslint-disable-next-line no-useless-constructor, no-empty-function
   constructor(public readonly name: string) {}
 
   addOrReplaceValidation(validation: FieldFeedbackValidation) {