“constructorParametersDownlevelTransform is not a function” in Angular

angular-cli

I had to run an "npm audit fix" on my project and from there after all "ng serve", I get the following error:

ERROR in TypeError: tooling_1.constructorParametersDownlevelTransform is not a function

Has anyone ever experienced this?

Thank you!

SOLUTION:

npm install @angular-devkit/build-angular@0.901.9

Best Answer

I just got same error. If you are using Angular 9 in your app check version of @angular-devkit/build-angular. I had version 0.1000.0 which I assume is intended for Angular v10. Probably got there by running ncu I just downgraded on 0.9xxx.x and this error message is not showing anymore.

To fix this issue just downgrade angular-devkit/build-angular:

npm install @angular-devkit/build-angular@0.901.9

Related Solutions

R – ASP.NET MVC and Service Oriented Architecture

For your situation, I would do things a little differently.

I would create a seperate project for your Data Access Layer. I would also move business logic into a Business Logic Layer.

You could then share both your DAL and BLL between the ASP.NET MVC site (your Models would be a Facade to the BLL objects) and your WCF Services thus centralizing all of your logic into a central location.

Angular – Could not find module “@angular-devkit/build-angular”

Install @angular-devkit/build-angular as dev dependency. This package is newly introduced in Angular 6.0

npm install --save-dev @angular-devkit/build-angular

or,

yarn add @angular-devkit/build-angular --dev

Best Answer

Related Solutions

R – ASP.NET MVC and Service Oriented Architecture

Angular – Could not find module “@angular-devkit/build-angular”

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