diff --git a/app/soapbox/components/ui/input/input.tsx b/app/soapbox/components/ui/input/input.tsx
index 5314ee583..f30ae5d09 100644
--- a/app/soapbox/components/ui/input/input.tsx
+++ b/app/soapbox/components/ui/input/input.tsx
@@ -11,7 +11,7 @@ const messages = defineMessages({
   hidePassword: { id: 'input.password.hide_password', defaultMessage: 'Hide password' },
 });
 
-interface IInput extends Pick<React.InputHTMLAttributes<HTMLInputElement>, 'onChange' | 'type'> {
+interface IInput extends Pick<React.InputHTMLAttributes<HTMLInputElement>, 'onChange' | 'type' | 'autoComplete' | 'autoCorrect' | 'autoCapitalize' | 'required'> {
   autoFocus?: boolean,
   defaultValue?: string,
   className?: string,
@@ -20,7 +20,7 @@ interface IInput extends Pick<React.InputHTMLAttributes<HTMLInputElement>, 'onCh
   placeholder?: string,
   value?: string,
   onChange?: (event: React.ChangeEvent<HTMLInputElement>) => void,
-  type: 'text' | 'email' | 'tel' | 'password'
+  type: 'text' | 'email' | 'tel' | 'password',
 }
 
 const Input = React.forwardRef<HTMLInputElement, IInput>(
diff --git a/app/soapbox/features/auth_login/components/logout.tsx b/app/soapbox/features/auth_login/components/logout.tsx
index 1a44f292f..e702e146b 100644
--- a/app/soapbox/features/auth_login/components/logout.tsx
+++ b/app/soapbox/features/auth_login/components/logout.tsx
@@ -13,7 +13,7 @@ const Logout: React.FC = () => {
   const [done, setDone] = useState(false);
 
   useEffect(() => {
-    (dispatch(logOut(intl)) as any)
+    dispatch(logOut(intl) as any)
       .then(() => setDone(true))
       .catch(console.warn);
   });
diff --git a/app/soapbox/features/external_login/components/external-login-form.tsx b/app/soapbox/features/external_login/components/external-login-form.tsx
new file mode 100644
index 000000000..2d6c7d2fa
--- /dev/null
+++ b/app/soapbox/features/external_login/components/external-login-form.tsx
@@ -0,0 +1,70 @@
+import React, { useState, useEffect } from 'react';
+import { useIntl, FormattedMessage, defineMessages } from 'react-intl';
+import { useDispatch } from 'react-redux';
+
+import { externalLogin, loginWithCode } from 'soapbox/actions/external_auth';
+import { Button, Form, FormActions, FormGroup, Input, Spinner } from 'soapbox/components/ui';
+
+const messages = defineMessages({
+  instanceLabel: { id: 'login.fields.instance_label', defaultMessage: 'Instance' },
+  instancePlaceholder: { id: 'login.fields.instance_placeholder', defaultMessage: 'example.com' },
+});
+
+/** Form for logging into a remote instance */
+const ExternalLoginForm: React.FC = () => {
+  const code = new URLSearchParams(window.location.search).get('code');
+
+  const intl = useIntl();
+  const dispatch = useDispatch();
+
+  const [host, setHost] = useState('');
+  const [isLoading, setLoading] = useState(false);
+
+  const handleHostChange: React.ChangeEventHandler<HTMLInputElement> = ({ currentTarget }) => {
+    setHost(currentTarget.value);
+  };
+
+  const handleSubmit = () => {
+    setLoading(true);
+
+    dispatch(externalLogin(host) as any)
+      .then(() => setLoading(false))
+      .catch(() => setLoading(false));
+  };
+
+  useEffect(() => {
+    if (code) {
+      dispatch(loginWithCode(code));
+    }
+  });
+
+  if (code) {
+    return <Spinner />;
+  }
+
+  return (
+    <Form onSubmit={handleSubmit}>
+      <FormGroup labelText={intl.formatMessage(messages.instanceLabel)}>
+        <Input
+          aria-label={intl.formatMessage(messages.instancePlaceholder)}
+          placeholder={intl.formatMessage(messages.instancePlaceholder)}
+          type='text'
+          name='host'
+          onChange={handleHostChange}
+          autoComplete='off'
+          autoCorrect='off'
+          autoCapitalize='off'
+          required
+        />
+      </FormGroup>
+
+      <FormActions>
+        <Button theme='primary' type='submit' disabled={isLoading}>
+          <FormattedMessage id='login.log_in' defaultMessage='Log in' />
+        </Button>
+      </FormActions>
+    </Form>
+  );
+};
+
+export default ExternalLoginForm;
diff --git a/app/soapbox/features/external_login/components/external_login_form.js b/app/soapbox/features/external_login/components/external_login_form.js
deleted file mode 100644
index 8cbebc70c..000000000
--- a/app/soapbox/features/external_login/components/external_login_form.js
+++ /dev/null
@@ -1,82 +0,0 @@
-import React from 'react';
-import ImmutablePureComponent from 'react-immutable-pure-component';
-import { injectIntl, FormattedMessage, defineMessages } from 'react-intl';
-import { connect } from 'react-redux';
-
-import { externalLogin, loginWithCode } from 'soapbox/actions/external_auth';
-import { Spinner } from 'soapbox/components/ui';
-import { SimpleForm, FieldsGroup, TextInput } from 'soapbox/features/forms';
-
-const messages = defineMessages({
-  instanceLabel: { id: 'login.fields.instance_label', defaultMessage: 'Instance' },
-  instancePlaceholder: { id: 'login.fields.instance_placeholder', defaultMessage: 'example.com' },
-});
-
-export default @connect()
-@injectIntl
-class ExternalLoginForm extends ImmutablePureComponent {
-
-  state = {
-    host: '',
-    isLoading: false,
-  }
-
-  handleHostChange = ({ target }) => {
-    this.setState({ host: target.value });
-  }
-
-  handleSubmit = e => {
-    const { dispatch } = this.props;
-    const { host } = this.state;
-
-    this.setState({ isLoading: true });
-
-    dispatch(externalLogin(host))
-      .then(() => this.setState({ isLoading: false }))
-      .catch(() => this.setState({ isLoading: false }));
-  }
-
-  componentDidMount() {
-    const code = new URLSearchParams(window.location.search).get('code');
-
-    if (code) {
-      this.setState({ code });
-      this.props.dispatch(loginWithCode(code));
-    }
-  }
-
-  render() {
-    const { intl } = this.props;
-    const { isLoading, code } = this.state;
-
-    if (code) {
-      return <Spinner />;
-    }
-
-    return (
-      <SimpleForm onSubmit={this.handleSubmit} className='external-login'>
-        <fieldset disabled={isLoading}>
-          <FieldsGroup>
-            <TextInput
-              label={intl.formatMessage(messages.instanceLabel)}
-              placeholder={intl.formatMessage(messages.instancePlaceholder)}
-              name='host'
-              value={this.state.host}
-              onChange={this.handleHostChange}
-              autoComplete='off'
-              autoCorrect='off'
-              autoCapitalize='off'
-              required
-            />
-          </FieldsGroup>
-        </fieldset>
-        <div className='actions'>
-          <button name='button' type='submit' className='btn button button-primary'>
-            <FormattedMessage id='login.log_in' defaultMessage='Log in' />
-          </button>
-        </div>
-      </SimpleForm>
-    );
-  }
-
-}
diff --git a/app/soapbox/features/external_login/index.js b/app/soapbox/features/external_login/index.js
deleted file mode 100644
index 881c2e08f..000000000
--- a/app/soapbox/features/external_login/index.js
+++ /dev/null
@@ -1,12 +0,0 @@
-import React from 'react';
-import ImmutablePureComponent from 'react-immutable-pure-component';
-
-import ExternalLoginForm from './components/external_login_form';
-
-export default class ExternalLoginPage extends ImmutablePureComponent {
-
-  render() {
-    return <ExternalLoginForm />;
-  }
-
-}
diff --git a/app/soapbox/features/external_login/index.tsx b/app/soapbox/features/external_login/index.tsx
new file mode 100644
index 000000000..510014dc2
--- /dev/null
+++ b/app/soapbox/features/external_login/index.tsx
@@ -0,0 +1,10 @@
+import React from 'react';
+
+import ExternalLoginForm from './components/external-login-form';
+
+/** Page for logging into a remote instance */
+const ExternalLoginPage: React.FC = () => {
+  return <ExternalLoginForm />;
+};
+
+export default ExternalLoginPage;