Convert FormInputButton to TypeScript

(cherry picked from commit 32fa63d24d08d8d8877386a8d2e7065ab5d0ad39)

frontend/src/Components/Form/FormInputButton.js

@@ -1,54 +0,0 @@
-import classNames from 'classnames';
-import PropTypes from 'prop-types';
-import React from 'react';
-import Button from 'Components/Link/Button';
-import SpinnerButton from 'Components/Link/SpinnerButton';
-import { kinds } from 'Helpers/Props';
-import styles from './FormInputButton.css';
-
-function FormInputButton(props) {
-  const {
-    className,
-    canSpin,
-    isLastButton,
-    ...otherProps
-  } = props;
-
-  if (canSpin) {
-    return (
-      <SpinnerButton
-        className={classNames(
-          className,
-          !isLastButton && styles.middleButton
-        )}
-        kind={kinds.PRIMARY}
-        {...otherProps}
-      />
-    );
-  }
-
-  return (
-    <Button
-      className={classNames(
-        className,
-        !isLastButton && styles.middleButton
-      )}
-      kind={kinds.PRIMARY}
-      {...otherProps}
-    />
-  );
-}
-
-FormInputButton.propTypes = {
-  className: PropTypes.string.isRequired,
-  isLastButton: PropTypes.bool.isRequired,
-  canSpin: PropTypes.bool.isRequired
-};
-
-FormInputButton.defaultProps = {
-  className: styles.button,
-  isLastButton: true,
-  canSpin: false
-};
-
-export default FormInputButton;

frontend/src/Components/Form/FormInputButton.tsx

@@ -0,0 +1,38 @@
+import classNames from 'classnames';
+import React from 'react';
+import Button, { ButtonProps } from 'Components/Link/Button';
+import SpinnerButton from 'Components/Link/SpinnerButton';
+import { kinds } from 'Helpers/Props';
+import styles from './FormInputButton.css';
+
+export interface FormInputButtonProps extends ButtonProps {
+  canSpin?: boolean;
+  isLastButton?: boolean;
+}
+
+function FormInputButton({
+  className = styles.button,
+  canSpin = false,
+  isLastButton = true,
+  ...otherProps
+}: FormInputButtonProps) {
+  if (canSpin) {
+    return (
+      <SpinnerButton
+        className={classNames(className, !isLastButton && styles.middleButton)}
+        kind={kinds.PRIMARY}
+        {...otherProps}
+      />
+    );
+  }
+
+  return (
+    <Button
+      className={classNames(className, !isLastButton && styles.middleButton)}
+      kind={kinds.PRIMARY}
+      {...otherProps}
+    />
+  );
+}
+
+export default FormInputButton;