prod build failed

[tandalevaibhav]

My Angular CLI version is (7.3.9) , Node 10.16.3, Typescript 3.1.6
When I run:- ng build --prod It failes with the following Error.
`Date: 2019-10-16T10:51:09.356Z
Hash: 5e96b3d4506b7e0309e2
Time: 33576ms
chunk {0} common.1c16b66e2dc9707a3b58.js (common) 15.9 kB [rendered]
chunk {1} runtime.bcd245d37dfc345066e0.js (runtime) 2.33 kB [entry] [rendered]
chunk {2} 2.68b747abb47eb68d0533.js () 830 kB [rendered]
chunk {3} main.beeb15859443d2425509.js (main) 2.26 MB [initial] [rendered]
chunk {4} polyfills.c6e355a6d69372a21900.js (polyfills) 41 kB [initial] [rendered]
chunk {5} styles.1f662db96d381bd4672f.css (styles) 188 kB [initial] [rendered]
chunk {6} 6.f86474f62f6e0801aebb.js () 106 kB [rendered]
chunk {7} 7.776c1f6c1132d75799b3.js () 3.73 kB [rendered]
chunk {8} 8.dc79e1074e7fa12fbc60.js () 134 kB [rendered]
chunk {9} 9.b07a3235bd266d8a4cca.js () 163 kB [rendered]
chunk {10} 10.10df86d42d2d0c674b10.js () 234 kB [rendered]
chunk {11} 11.8e7b16f672f75856651e.js () 76 kB [rendered]
chunk {scripts} scripts.091d3f4f3258ad6e9f29.js (scripts) 161 kB [entry] [rendered]

ERROR in ./node_modules/ng2-material-dropdown/fesm5/ng2-material-dropdown.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 (/home/vaibhav/node_modules/@angular-devkit/build-optimizer/src/transforms/scrub-file.js:265:35)
at checkNodeForDecorators (/home/vaibhav/node_modules/@angular-devkit/build-optimizer/src/transforms/scrub-file.js:77:21)
at visitNodes (/home/vaibhav/node_modules/@angular-devkit/build-optimizer/node_modules/typescript/lib/typescript.js:16144:30)
at Object.forEachChild (/home/vaibhav/node_modules/@angular-devkit/build-optimizer/node_modules/typescript/lib/typescript.js:16370:24)
at checkNodeForDecorators (/home/vaibhav/node_modules/@angular-devkit/build-optimizer/src/transforms/scrub-file.js:68:31)
at visitNode (/home/vaibhavnode_modules/@angular-devkit/build-optimizer/node_modules/typescript/lib/typescript.js:16135:24)
at Object.forEachChild (/home/vaibhav/node_modules/@angular-devkit/build-optimizer/node_modules/typescript/lib/typescript.js:16265:21)
at checkNodeForDecorators (/home/vaibhav/node_modules/@angular-devkit/build-optimizer/src/transforms/scrub-file.js:68:31)
at visitNode (/home/vaibhav/node_modules/@angular-devkit/build-optimizer/node_modules/typescript/lib/typescript.js:16135:24)
at Object.forEachChild (/home/vaibhav/node_modules/@angular-devkit/build-optimizer/node_modules/typescript/lib/typescript.js:16322:24)
at checkNodeForDecorators (/home/vaibhav/node_modules/@angular-devkit/build-optimizer/src/transforms/scrub-file.js:68:31)
at visitNode (/home/vaibhav/node_modules/@angular-devkit/build-optimizer/node_modules/typescript/lib/typescript.js:16135:24)
at Object.forEachChild (/home/vaibhav/node_modules/@angular-devkit/build-optimizer/node_modules/typescript/lib/typescript.js:16333:24)
at checkNodeForDecorators (/home/vaibhav/node_modules/@angular-devkit/build-optimizer/src/transforms/scrub-file.js:68:31)
at visitNode (/home/vaibhav/node_modules/@angular-devkit/build-optimizer/node_modules/typescript/lib/typescript.js:16135:24)
at Object.forEachChild (/home/vaibhav/node_modules/@angular-devkit/build-optimizer/node_modules/typescript/lib/typescript.js:16229:21)
`
But ng serve works fine

[alan-agius4]

Thanks for reporting this issue. This issue is now obsolete due to changes in the recent releases. Please update to the most recent Angular CLI version.

The fix of this was #13992 which is available in version 8+

[Suyog-Sankey]

I am using CLI version 8.2.0 but I am still getting same issue.

[wrubio]

Hi, I have the same problem. I updated the cli version but I'm still getting the same issue.

[andres-gismondi]

Hi. I have the same problem. This issue is close and where is the solution?

[Suyog-Sankey]

I just mentioned the previous version in package.json and it solved my issue for now. The previous version does not have this issue while prod build.

[wrubio]

I was able to solve the problem, leaving the version of "ngx-chips" that it has defined without taking the latest version.
 
from:
"ngx-chips": "^ 2.0.2",
to:
"ngx-chips": "2.0.2",

in the package.json.

In my case this was the temporary solution, because the error it gives me is from a library that uses ngx-chips:

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

[andres-gismondi]

I solve the problem leaving the version of ng-multiselect-dropdown to 0.2.4

from "ng-multiselect-dropdown": "^0.2.4",
to "ng-multiselect-dropdown": "0.2.4".

[chetanmore0510]

thanks @andres-gismondi your solution help me to overcome this issue.
my local angular CLI version of project is : ^8.0.3

i downgrade
from "ng-multiselect-dropdown": "^0.2.6",
to "ng-multiselect-dropdown": "0.2.4".

and the issue got fixed for production build.

[tandalevaibhav]

@wrubio thanks! your solution worked for me.

[robertop87]

thanks @andres-gismondi your solution help me to overcome this issue.
my local angular CLI version of project is : ^8.0.3

i downgrade
from "ng-multiselect-dropdown": "^0.2.6",
to "ng-multiselect-dropdown": "0.2.4".

and the issue got fixed for production build.

To me its works using version "0.2.3"

[kmjayadeep]

works in 0.2.3 or me too

[axelosorio]

Works for me the solution from wrubio, thanks!!
on package.json:
"ngx-chips": "^2.0.2",
remove ^ and change to "ngx-chips": "2.0.2",
Run in console the "npm install" command, this will get the 2.0.2 version and quit the last version 2.1.0
Run the ng build