Cannot redefine property

[florea-g]

Hello,
After i upgraded to angular 4.0.0 i have this error in console: "Cannot redefine property ...".
I have a ASP.NET website with some pages in Angular2 but the property which throws the error is from a .cshtml file. Is a function in a .js file which i am calling from more .cshtml files.

Thanks.

[JiaLiPassion]

@florea-g, please post the full error console,and if if there is stacktrace,please also paste here,thanks

[florea-g]

Hello @JiaLiPassion
Here is the error:

Uncaught TypeError: Cannot redefine property: onAttachmentsDataBound
    at Function.defineProperty (<anonymous>)
    at patchProperty (zone.js:1235)
    at patchOnProperties (zone.js:1246)
    at propertyDescriptorPatch (zone.js:1795)
    at zone.js:1951
    at NO_ZONE.name (zone.js:11)
    at zone.js:12

Thanks

[JiaLiPassion]

@florea-g , could you check the attached dist.zip fix your issue or not? just override the node_modules/zone.js/dist
dist.zip

[florea-g]

@JiaLiPassion yes that solved the issue. Thank you !

[IevhenIkonnykov]

Hello,
After updating to Angular 4 from Angular 2.4.3 I get an error when the app loads:

zone.js:1235 Uncaught TypeError: Cannot redefine property: oneAdWritePosition
at Function.defineProperty (<anonymous>)
at patchProperty (zone.js:1235)
at patchOnProperties (zone.js:1246)
at propertyDescriptorPatch (zone.js:1795)
at zone.js:1951
at webpackJsonp.677.NO_ZONE.name (zone.js:9)
at Object.<anonymous> (zone.js:12)
at Object.677 (zone.js:2067)
at __webpack_require__ (bootstrap 7590312…:52)
at Object.226 (polyfills.ts:1)
at __webpack_require__ (bootstrap 7590312…:52)
at Object.678 (zone.js:2067)
at __webpack_require__ (bootstrap 7590312…:52)
at webpackJsonpCallback (bootstrap 7590312…:23)
at polyfills.bundle.js:1

The app works fine, but I am not sure if it is right to ignore this error. Could someone please help me with this issue?

Thanks.

[JiaLiPassion]

@IevhenIkonnykov , could you check this dist.zip solve your issue or not?
https://github.com/angular/zone.js/files/890973/dist.zip

[IevhenIkonnykov]

Yes, it works.
Thank you so much.

Is it a solution for all similar "Cannot redefine property..." problems or just for this one particular?

Thanks again.

[JiaLiPassion]

@IevhenIkonnykov , thanks for confirm, it should resolve all such kind of "Cannot redefine property..." issues.