Extend PureComponent, #7

CHANGELOG.md

@@ -0,0 +1,7 @@
+
+Changelog
+=========
+
+### 0.10.0
+ - Have `<FormattedMessage>` extend `PureComponent` as a performance
+   optimization ([#7](https://github.com/ultraq/react-icu-message-formatter/issues/7))

package.json

@@ -1,6 +1,6 @@
 {
 	"name": "@ultraq/react-icu-message-formatter",
-	"version": "0.10.0",
+	"version": "0.10.0-beta.0",
 	"description": "React wrapper for the lightweight ICU message formatter",
 	"author": "Emanuel Rabina <emanuelrabina@gmail.com> (http://www.ultraq.net.nz/)",
 	"license": "Apache-2.0",

source/FormattedMessage.js

@@ -14,12 +14,12 @@
  * limitations under the License.
  */
 
-import MessageFormatterContext from './MessageFormatterContext.js';
+import MessageFormatterContext          from './MessageFormatterContext.js';
 
-import {flatten}                    from '@ultraq/array-utils';
-import {escapeHtml}                 from '@ultraq/string-utils';
-import PropTypes                    from 'prop-types';
-import React, {Component, Fragment} from 'react';
+import {flatten}                        from '@ultraq/array-utils';
+import {escapeHtml}                     from '@ultraq/string-utils';
+import PropTypes                        from 'prop-types';
+import React, {Fragment, PureComponent} from 'react';
 
 /**
  * Return a copy of the passed object whose string values have been
@@ -72,7 +72,7 @@ function groupStrings(formatParts) {
  * 
  * @author Emanuel Rabina
  */
-export default class FormattedMessage extends Component {
+export default class FormattedMessage extends PureComponent {
 
 	static contextType = MessageFormatterContext;
 	static propTypes = {