importing metron.extender into TS or JSX file causes issues with Office.js API about office-js

[syncimprov]

We added and imported this file for some useful string functions:

https://github.com/metronical/metron/blob/master/src/metron.extenders.ts

This caused the issue. We had to remove all instances of the import to fix it.

We didn't want the entire metron library https://github.com/metronical/metron) and this in itself may have caused some inconsistencies.

[kbrandl]

Thanks for the update @BizH. Do I understand correctly that you've resolved this problem and this issue can be closed?

[kbrandl]

Closing this issue, as BizH has confirmed it is resolved (see prior comment in this thread).

[rasikat86]

Hi, I am seeing a similar issue when using OfficeJS in an Angular 2 application. The full erro stack is as below -

{"description":"Unable to set property 'isValid' of undefined or null reference","number":-2146823281,"stack":"TypeError: Unable to set property 'isValid' of undefined or null reference\n at Anonymous function (https://appsforoffice.microsoft.com/lib/beta/hosted/word-win32-16.01.js:21:264919)\n at ZoneDelegate.prototype.invoke (eval code:386:13)\n at onInvoke (eval code:4976:17)\n at ZoneDelegate.prototype.invoke (eval code:386:13)\n at Zone.prototype.run (eval code:138:17)\n at Anonymous function (eval code:872:17)\n at ZoneDelegate.prototype.invokeTask (eval code:419:13)\n at onInvokeTask (eval code:4967:17)\n at ZoneDelegate.prototype.invokeTask (eval code:419:13)\n at Zone.prototype.runTask (eval code:188:21)"}

Any help will be much appreciated!