Included types

src/components/TestForm/index.tsx

@@ -2,8 +2,6 @@ import React, { useState } from 'react';
 import { createStyles, makeStyles, Theme } from '@material-ui/core/styles';
 import TextField from '@material-ui/core/TextField';
 import Button from '@material-ui/core/Button';
-import FormControlLabel from '@material-ui/core/FormControlLabel';
-import Checkbox from '@material-ui/core/Checkbox';
 
 const useStyles = makeStyles((theme: Theme) =>
   createStyles({
@@ -36,7 +34,7 @@ export const Form: React.FC = () => {
   };
   const [formValues, setFormValues] = useState<formData>(defaultValues);
 
-  const isEmailValid: any = () => {
+  const isEmailValid = (): boolean => {
     /**
      * The following is the RFC 5322 valid email regex
      * Hinted from question https://stackoverflow.com/questions/201323/how-to-validate-an-email-address-using-a-regular-expression
@@ -47,7 +45,7 @@ export const Form: React.FC = () => {
     return VALID_EMAIL_REGEX.test(String(formValues.email).toLowerCase());
   };
 
-  const handleSubmit: any = (event: any) => {
+  const handleSubmit = (event: React.FormEvent): void => {
     event.preventDefault();
     const errors: Array<string> = [];
     if (!isEmailValid()) {