From: Roan Kattouw <roan.kattouw@gmail.com>
Date: Mon, 18 Sep 2017 19:24:43 +0000 (-0700)
Subject: Follow-up 4107d1d4: avoid JS errors when trying to call mw.track() from jquery.migrate
X-Git-Tag: 1.31.0-rc.0~2059^2
X-Git-Url: https://git.cyclocoop.org/%7B%24www_url%7Dadmin/compta/comptes/ajouter.php?a=commitdiff_plain;h=52aa5cc585dfe67378ef8b9c62704d3849e7a39a;p=lhc%2Fweb%2Fwiklou.git

Follow-up 4107d1d4: avoid JS errors when trying to call mw.track() from jquery.migrate

Some migrateWarn() calls (like the one for compatMode) happen before
mw is created. Don't crash on trying to call mw.track() in that case.

Change-Id: I9e33af2865bb10adc0473045f714fe4f9f699861
---

diff --git a/resources/lib/jquery/jquery.migrate.js b/resources/lib/jquery/jquery.migrate.js
index 12212ffcfb..70512e008f 100644
--- a/resources/lib/jquery/jquery.migrate.js
+++ b/resources/lib/jquery/jquery.migrate.js
@@ -83,7 +83,9 @@ function migrateWarn( msg ) {
 		warnedAbout[ msg ] = true;
 		jQuery.migrateWarnings.push( msg );
 		// PATCH: Add instrumentation for statistics --Krinkle
-		mw.track( "mw.deprecate", "jquery-migrate" );
+		if ( window.mw && window.mw.track ) {
+			window.mw.track( "mw.deprecate", "jquery-migrate" );
+		}
 		if ( console && console.warn && !jQuery.migrateMute ) {
 			console.warn( "JQMIGRATE: " + msg );
 			if ( jQuery.migrateTrace && console.trace ) {