[TYPO3-core] RFC: Bug #0016614: common.js resets TYPO3 namespace

[Peter Kuehn [wmdb]]

This is an SVN patch request.

Type: Bugfix

Bugtracker reference:
http://bugs.typo3.org/view.php?id=16614

Branches:
4.3, 4.4 and Trunk

Problem:
If some JavaScript already registered a class in the global namespace 
TYPO3. prior to loading common.js in the backend.php (which is the case 
if added using $GLOBALS['TBE_TEMPLATE']->getPageRenderer()->addJsFile()) 
the class gets overwritten in common.js with

var TYPO3 = {
...
};

Solution:
using Ext.apply()

var TYPO3 = TYPO3 ? TYPO3 : {};
TYPO3 = Ext.apply(TYPO3,{
...
});

gRTz
pekue
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