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Thread: Uncaught ReferenceError: childxtype is not defined

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  1. #1

    Default Uncaught ReferenceError: childxtype is not defined

    Exception is "Uncaught ReferenceError: childxtype is not defined at doAdd (ExtRenderer.js:440)"

    Can be fixed by replacing "childxtype" with "childXtype" at lines 440 and 442.

    Ext React 6.7.0

  2. #2
    Sencha - Forum Administrator
    Join Date
    Sep 2017


    Thank you so much for bringing this to our attention. I apologize for the delay. I have shared this with the support staff to look into at their earliest convenience. Your patience is greatly appreciated!

    Thanks again,


  3. #3
    Ext Support Team
    Join Date
    Jan 2018



    Thank you for bringing this to our attention., Is it possible for you to provide a fiddle for this issue.

    Sencha Support.

  4. #4


    - Do npm install @sencha/ext-react in a empty directory
    - Open ExtRenderer.js in the src/ folder or dist/
    - Go to line 428, doAdd function. Notice the childXtype argument
    - Go to line 440, notice that is trying to access childxtype

  5. #5


    If anyone is looking for the fix, I have created a gist. You can apply this patch with patch-package, see my comment for info.

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