Prod build failed

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• you searched similar issues online (9/10 issues in this repo are solved by googling, so please…do it)
• you provide an online demo I can see without having to replicate your environment
• you help me by debugging your issue, and if you can’t, do go on filling out this form

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[ ] bug report => search github for a similar issue or PR before submitting
[ ] support request/question

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Current behavior

I want to build with this command:

ng build --aot=true --prod --build-optimizer --configuration=dev --outputHashing=all

But I got this error:

ERROR in ./node_modules/ng2-material-dropdown/fesm5/ng2-material-dropdown.js

TypeError: Cannot read property 'kind' of undefined at isAngularDecoratorMetadataExpression

Expected behavior

Run like dev & staging mode

Minimal reproduction of the problem with instructions (if applicable)

Download Angular 8, install ngx chips

What do you use to build your app?. Please specify the version

Angular-CLI

Angular version:

8.2.0.

ngx-chips version:

2.0.2

Browser: [all | Chrome XX | Firefox XX | IE XX | Safari XX | Mobile Chrome XX | Android X.X Web Browser | iOS XX Safari | iOS XX UIWebView | iOS XX WKWebView ]

[Gbuomprisco]

Hi everyone, I had a look at the issue as promised: my build can’t reproduce the issue you all have; also had a look at the other package’s issue.

My gut feeling is that it may be due to a package version (angular-devkit/build-angular):

• this is the version I use to build on v9: “@angular-devkit/build-angular”: “^0.803.19”
• this is the version I use to build on v8": “@angular-devkit/build-angular”: “^0.803.8”

Can you try to use the same versions as above? Or share which exact versions you’re using?

[Gbuomprisco]

That’s not really a solution, buildOptimzer is an important setting. If you set the correct versions the problem should be solved