/* global mw, $VARS, $CODE */
-// eslint-disable-next-line no-unused-vars
-var mediaWikiLoadStart = ( new Date() ).getTime(),
- mwPerformance = ( window.performance && performance.mark ) ? performance : {
+var mwPerformance = ( window.performance && performance.mark ) ? performance : {
mark: function () {}
- };
+ },
+ // Define now() here to ensure valid comparison with mediaWikiLoadEnd (T153819).
+ mwNow = ( function () {
+ var perf = window.performance,
+ navStart = perf && perf.timing && perf.timing.navigationStart;
+ return navStart && typeof perf.now === 'function' ?
+ function () { return navStart + perf.now(); } :
+ function () { return +new Date(); };
+ }() ),
+ // eslint-disable-next-line no-unused-vars
+ mediaWikiLoadStart = mwNow();
mwPerformance.mark( 'mwLoadStart' );
* - DOM Level 4 & Selectors API Level 1
* - HTML5 & Web Storage
* - DOM Level 2 Events
+ * - JSON
*
* Browsers we support in our modern run-time (Grade A):
- * - Chrome
+ * - Chrome 4+
* - IE 9+
* - Firefox 3.5+
- * - Safari 4+
+ * - Safari 5+
* - Opera 10.5+
- * - Mobile Safari (iOS 1+)
+ * - Mobile Safari (iOS 4+)
* - Android 2.0+
*
* Browsers we support in our no-javascript run-time (Grade C):
+ * - Chrome 1+
* - IE 6+
* - Firefox 3+
* - Safari 3+
* - Nokia's Ovi Browser
* - MeeGo's browser
* - Google Glass
+ * - UC Mini (speed mode on)
*
* Other browsers that pass the check are considered Grade X.
*
// http://caniuse.com/#feat=addeventlistener
'addEventListener' in window &&
+ // http://caniuse.com/#feat=json
+ // https://phabricator.wikimedia.org/T141344#2784065
+ ( window.JSON && JSON.stringify && JSON.parse ) &&
+
// Hardcoded exceptions for browsers that pass the requirement but we don't want to
// support in the modern run-time.
+ // Note: Please extend the regex instead of adding new ones
!(
- ua.match( /webOS\/1\.[0-4]|SymbianOS|Series60|NetFront|Opera Mini|S40OviBrowser|MeeGo|Android.+Glass/ ) ||
- ua.match( /PlayStation/i ) ||
- // UC Mini (speed mode on)
- ua.match( /^Mozilla\/5\.0 .+ Gecko\/$/ )
+ ua.match( /webOS\/1\.[0-4]|SymbianOS|Series60|NetFront|Opera Mini|S40OviBrowser|MeeGo|Android.+Glass|^Mozilla\/5\.0 .+ Gecko\/$|googleweblight/ ) ||
+ ua.match( /PlayStation/i )
)
);
}