better lint

.eslintrc.js

@@ -19,6 +19,7 @@ module.exports = {
   parser: '@typescript-eslint/parser',
   plugins: ['jsx-a11y', 'react', 'react-hooks', '@typescript-eslint'],
   rules: {
+    '@typescript-eslint/no-unused-vars': 'error',
     'jsx-quotes': ['error', 'prefer-double'],
     'jsx-a11y/no-onchange': 0,
     'no-trailing-spaces': 'error',

__tests__/index.tsx

@@ -48,8 +48,6 @@ test('calls onChange & onInput when text changes', () => {
 })
 
 test('continues to work if no onChange and no onInput', () => {
-  const onChange = jest.fn()
-  const onInput = jest.fn()
   const { asFragment, getByText } = render(
     <ExpandingTextarea value="Some text" />
   )