Restore vanilla components

app/javascript/mastodon/features/compose/containers/warning_container.js

@@ -0,0 +1,24 @@
+import React from 'react';
+import { connect } from 'react-redux';
+import Warning from '../components/warning';
+import PropTypes from 'prop-types';
+import { FormattedMessage } from 'react-intl';
+import { me } from '../../../initial_state';
+
+const mapStateToProps = state => ({
+  needsLockWarning: state.getIn(['compose', 'privacy']) === 'private' && !state.getIn(['accounts', me, 'locked']),
+});
+
+const WarningWrapper = ({ needsLockWarning }) => {
+  if (needsLockWarning) {
+    return <Warning message={<FormattedMessage id='compose_form.lock_disclaimer' defaultMessage='Your account is not {locked}. Anyone can follow you to view your follower-only posts.' values={{ locked: <a href='/settings/profile'><FormattedMessage id='compose_form.lock_disclaimer.lock' defaultMessage='locked' /></a> }} />} />;
+  }
+
+  return null;
+};
+
+WarningWrapper.propTypes = {
+  needsLockWarning: PropTypes.bool,
+};
+
+export default connect(mapStateToProps)(WarningWrapper);