old_contents: /**
   * Analytics Use Snippet Switch component.
   *
   * Site Kit by Google, Copyright 2021 Google LLC
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     https://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  /**
   * External dependencies
   */
  import PropTypes from 'prop-types';
  
  /**
   * WordPress dependencies
   */
  import { useCallback } from '@wordpress/element';
  import { __ } from '@wordpress/i18n';
  
  /**
   * Internal dependencies
   */
  import Data from 'googlesitekit-data';
  import { MODULES_ANALYTICS } from '../../datastore/constants';
  import Switch from '../../../../components/Switch';
  import { trackEvent } from '../../../../util';
  import useViewContext from '../../../../hooks/useViewContext';
  const { useSelect, useDispatch } = Data;
  
  export default function UseSnippetSwitch( { description } ) {
  	const viewContext = useViewContext();
  	const useSnippet = useSelect( ( select ) =>
  		select( MODULES_ANALYTICS ).getUseSnippet()
  	);
  	const canUseSnippet = useSelect( ( select ) =>
  		select( MODULES_ANALYTICS ).getCanUseSnippet()
  	);
  	const hasExistingTag = useSelect( ( select ) =>
  		select( MODULES_ANALYTICS ).hasExistingTag()
  	);
  
  	const { setUseSnippet } = useDispatch( MODULES_ANALYTICS );
  	const onChange = useCallback( () => {
  		const newUseSnippet = ! useSnippet;
  		setUseSnippet( newUseSnippet );
  		trackEvent(
  			`${ viewContext }_analytics`,
  			newUseSnippet ? 'enable_tag' : 'disable_tag',
  			'ua'
  		);
  	}, [ useSnippet, setUseSnippet, viewContext ] );
  
  	if ( useSnippet === undefined || hasExistingTag === undefined ) {
  		return null;
  	}
  
  	return (
  		<div className="googlesitekit-analytics-usesnippet">
  			<Switch
  				label={ __(
  					'Place Universal Analytics code',
  					'google-site-kit'
  				) }
  				checked={ useSnippet }
  				onClick={ onChange }
  				hideLabel={ false }
  				disabled={ ! canUseSnippet }
  			/>
  			{ description }
  		</div>
  	);
  }
  
  UseSnippetSwitch.propTypes = {
  	description: PropTypes.node,
  };
  
new_contents: /**
   * Analytics Use Snippet Switch component.
   *
   * Site Kit by Google, Copyright 2021 Google LLC
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     https://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  /**
   * External dependencies
   */
  import PropTypes from 'prop-types';
  
  /**
   * WordPress dependencies
   */
  import { useCallback } from '@wordpress/element';
  import { __ } from '@wordpress/i18n';
  
  /**
   * Internal dependencies
   */
  import Data from 'googlesitekit-data';
  import { MODULES_ANALYTICS } from '../../datastore/constants';
  import Switch from '../../../../components/Switch';
  import { trackEvent } from '../../../../util';
  import useViewContext from '../../../../hooks/useViewContext';
  const { useSelect, useDispatch } = Data;
  
  export default function UseSnippetSwitch( { description } ) {
  	const viewContext = useViewContext();
  	const useSnippet = useSelect( ( select ) =>
  		select( MODULES_ANALYTICS ).getUseSnippet()
  	);
  	const canUseSnippet = useSelect( ( select ) =>
  		select( MODULES_ANALYTICS ).getCanUseSnippet()
  	);
  	const hasExistingTag = useSelect( ( select ) =>
  		select( MODULES_ANALYTICS ).hasExistingTag()
  	);
  
  	const { setUseSnippet } = useDispatch( MODULES_ANALYTICS );
  	const onChange = useCallback( () => {
  		const newUseSnippet = ! useSnippet;
  		setUseSnippet( newUseSnippet );
  		trackEvent(
  			`${ viewContext }_analytics`,
  			newUseSnippet ? 'enable_tag' : 'disable_tag',
  			'ua'
  		);
  	}, [ useSnippet, setUseSnippet, viewContext ] );
  
  	if ( useSnippet === undefined || hasExistingTag === undefined ) {
  		return null;
  	}
  
  	return (
  		<div className="googlesitekit-analytics-usesnippet">
  			<Switch
  				label={ __(
  					'Place Universal Analytics code',
  					'google-site-kit'
  				) }
  				checked={ canUseSnippet === false ? false : useSnippet }
  				onClick={ onChange }
  				hideLabel={ false }
  				disabled={ canUseSnippet === false }
  			/>
  			{ description }
  		</div>
  	);
  }
  
  UseSnippetSwitch.propTypes = {
  	description: PropTypes.node,
  };
  
subject: Update UseSnippetSwitch component of analytics module.