Tips for troubleshooting the error that occurs during the ng build --prod process

After creating an app, I attempted to build it using ng build --prod, only to encounter an error message related to the current version of Syncfusion.

Below is the specific error I am experiencing:

ERROR in ./node_modules/@syncfusion/ej2-angular-dropdowns/@syncfusion/ej2-angular-dropdowns.es5.js
Module build failed (from ./node_modules/@angular-devkit/build-optimizer/src/build-optimizer/webpack-loader.js):
Error: Debug Failure. False expression.
    at getJSDocTags (F:\school-web-admin\node_modules\@angular-devkit\build-optimizer\node_modules\typescript\lib\typescript.js:13197:22)
    ...

.

The necessary dependency for Syncfusion has been included as follows:

"@syncfusion/ej2-angular-calendars": "^17.1.49",
"@syncfusion/ej2-angular-dropdowns": "^17.1.49",
"@syncfusion/ej2-angular-inputs": "^17.1.49",
"@syncfusion/ej2-angular-splitbuttons": "^17.1.47",

Please note that the application builds successfully with just ng build command.

angularsyncfusion

Answer №1

After investigating the reported issue related to the Syncfusion component, we have not been able to replicate it on our end. It appears that this problem may be caused by the build-optimizer tool. To assist you further, please provide us with the following details:

angular-cli version 
@angular-devkit\build-optimizer version

Furthermore, we have prepared a sample for your convenience which can be downloaded from the link provided below.

Sample:

If you have any other questions or concerns, please do not hesitate to reach out to us.

Best regards,

The Syncfusion Team

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