Ng2-pdf-viewer: Angular Prod Build Failure: Cannot read property 'kind' of undefined

[YazanGhishan]

Bug Report or Feature Request (mark with an x)

- [ ] Regression (a behavior that used to work and stopped working in a new release)
- [x] Bug report -> please search issues before submitting
- [ ] Feature request
- [ ] Documentation issue or request

Angular version: 8.0.2
ng2-pdf-viewer version: 6.1.2

When doing ng build everything works, but when trying to do ng build --prod I get this error:

ERROR in ./node_modules/ng2-pfd-viewer/fesm5/ng2-pdf-viewer.js
Module Build failed (from ./node_modules/@angular-devkit/build-optimizer/src/build-optimizer/webpack-loader.js):
TypeError: Cannot read property 'kind' of undefined
at isAngularDecoratorMetadataExpression (C:\Projects\test_project\node_modules\@angular-devkit\build-optimizer\src\transforms\scrub-file.js:77:21)

[dfgd]

Hey YazanGhishan,

I was having the same problem and solve it using [email protected].

Hope it helps you!

[hughanderson4]

@VadimDez I think this is the solution for buildOptimizer build issue:
https://stackoverflow.com/a/60887133/213050

Can you please try it?

Basically the lib needs to emit decorator metadata with some tsconfig.json change like this

"compilerOptions":{
  "emitDecoratorMetadata": true
}

We are trying to optimize our bundle sizes and this issue came up with ng2-pdf-viewer

Thanks!

[hughanderson4]

Actually I upgraded my project to Angular 9 and now I do not see that issue anymore.

[FiringBlanks]

Downgrading to v5.3.4 worked for me

npm uninstall ng2-pdf-viewer
then
npm install [email protected]

[NikhilP97]

After searching for a long time, this worked for me. Upgraded @angular-devkit/build-angular to version: "~0.803.19" and then prod build worked fine. Made the following change in package.json.
`
"devDependencies": {

"@angular-devkit/build-angular": "~0.803.19",

...
}
`

[dhavaljivani]

Please change your angular-devkit dependencies to latest version in the package.josn file:

I have changed version in below dependencies and its worked with the --prod command

"devDependencies": { "@angular-devkit/architect": "~0.803.20", "@angular-devkit/build-angular": "~0.803.20", "@angular-devkit/core": "~8.3.20", "@angular-devkit/schematics": "~8.3.20", }

This solution working like charm :)

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.