"Must call super constructor in derived class before accessing 'this'... when building in optimized Angular project

[andrewryan1906]

I'm running Angular 13 and I am seeing a an error ONLY when building my Angular project with optimization set to true. The error:

ERROR ReferenceError: Must call super constructor in derived class before access 'this' or returning from derived constructor

Here are screenshots of the error and the Console Source.

If I disable optimization it goes away, but this negatively impacts my production application's performance.

[simonsarris]

What version of GoJS are you using? Are you also using gojs-angular? What is your order number?

Is there a way to mark the go.js file for non-optimization in Angular's build process?

[andrewryan1906]

I’m using the latest - 3.0.18. I’m not using *gojs-angular… *and I’m still evaluating GoJs. Thanks, Andrew Andrew Ryan • Co-Founder & Chief Executive Officer *Rhythm Software* p: 678.585.2620 w: rhythmsoftware.com e: ***@***.*** <https://www.facebook.com/rhythmsoftware/> <https://twitter.com/rhythmsoftware> <https://www.linkedin.com/company/rhythmsoftware/>

…

On Feb 3, 2025 at 12:44:50 PM, Simon Sarris ***@***.***> wrote: What version of GoJS are you using? Are you also using gojs-angular? What is your order number? Is there a way to mark the go.js file for non-optimization in Angular's build process? — Reply to this email directly, view it on GitHub <#222 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AI7NDYTWYL2CBIM6UH2OUXT2N6TJFAVCNFSM6AAAAABWMT5LD2VHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDMMZRGY3DGNBRGM> . You are receiving this because you authored the thread.Message ID: ***@***.***>

[simonsarris]

My primary concern is that Angular is taking minified GoJS code and re-minifying it, which is introducing a problem. There's nothing like "$" or '$' in our minified code, so my suspicion is Angular somehow added that.

Is there some way you can specify a list of libraries (they might have called it something like vendors), in Angular 13, that avoids the optimization step? It may not be an Angular specific option but a Webpack option (or whatever Angular 13 uses for bundling)