X-Git-Url: https://git.heureux-cyclage.org/?a=blobdiff_plain;f=resources%2Fsrc%2Fstartup.js;h=d672d7697b8ccceefaf337e8a6a92f2c44e0e3e9;hb=f7e1770fb832aa77bf4e16ce8cc815f2b24dd10d;hp=deb280a8f18b8161434c64faa5ea1847b76d4a29;hpb=944b93ee740d491ec6353f3fa5a439db41de97b8;p=lhc%2Fweb%2Fwiklou.git

diff --git a/resources/src/startup.js b/resources/src/startup.js
index deb280a8f1..d672d7697b 100644
--- a/resources/src/startup.js
+++ b/resources/src/startup.js
@@ -1,44 +1,41 @@
 /**
- * Code in this file MUST work on even the most ancient of browsers!
+ * This file is where we decide whether to initialise the Grade A run-time.
  *
- * This file is where we decide whether to initialise the modern run-time.
+ * - Beware: This file MUST parse without errors on even the most ancient of browsers!
+ * - Beware: Do not call mwNow before the isCompatible() check.
  */
 
-/* global mw, $VARS, $CODE */
-
-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' );
+/* global mw, mwPerformance, mwNow, isCompatible, $VARS, $CODE */
+
+window.mwPerformance = ( window.performance && performance.mark ) ? performance : {
+	mark: function () {}
+};
+// Define now() here to ensure valid comparison with mediaWikiLoadEnd (T153819).
+window.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 Date.now(); };
+}() );
 
 /**
  * See <https://www.mediawiki.org/wiki/Compatibility#Browsers>
  *
  * Capabilities required for modern run-time:
+ * - ECMAScript 5
  * - 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 4+
- * - IE 9+
- * - Firefox 3.5+
+ * - Chrome 13+
+ * - IE 10+
+ * - Firefox 4+
  * - Safari 5+
- * - Opera 10.5+
- * - Mobile Safari (iOS 4+)
- * - Android 2.0+
+ * - Opera 12.10+
+ * - Mobile Safari 5.1+ (iOS 5+)
+ * - Android 4.1+
  *
  * Browsers we support in our no-javascript run-time (Grade C):
  * - Chrome 1+
@@ -46,6 +43,8 @@ mwPerformance.mark( 'mwLoadStart' );
  * - Firefox 3+
  * - Safari 3+
  * - Opera 10+
+ * - Mobile Safari 5.0+ (iOS 4+)
+ * - Android 2.0+
  * - WebOS < 1.5
  * - PlayStation
  * - Symbian-based browsers
@@ -61,9 +60,17 @@ mwPerformance.mark( 'mwLoadStart' );
  * @param {string} [str] User agent, defaults to navigator.userAgent
  * @return {boolean} User agent is compatible with MediaWiki JS
  */
-function isCompatible( str ) {
+window.isCompatible = function ( str ) {
 	var ua = str || navigator.userAgent;
 	return !!(
+		// http://caniuse.com/#feat=es5
+		// http://caniuse.com/#feat=use-strict
+		// http://caniuse.com/#feat=json / https://phabricator.wikimedia.org/T141344#2784065
+		( function () {
+			'use strict';
+			return !this && !!Function.prototype.bind && !!window.JSON;
+		}() ) &&
+
 		// http://caniuse.com/#feat=queryselector
 		'querySelector' in document &&
 
@@ -75,10 +82,6 @@ function isCompatible( str ) {
 		// 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
@@ -87,7 +90,7 @@ function isCompatible( str ) {
 			ua.match( /PlayStation/i )
 		)
 	);
-}
+};
 
 // Conditional script injection
 ( function () {
@@ -147,6 +150,9 @@ function isCompatible( str ) {
 		};
 	}
 
+	window.mediaWikiLoadStart = mwNow();
+	mwPerformance.mark( 'mwLoadStart' );
+
 	script = document.createElement( 'script' );
 	script.src = $VARS.baseModulesUri;
 	script.onload = script.onreadystatechange = function () {