This error occurred: "Property 'release' cannot be read because it is undefined."

Hello everyone!

I'm in need of some assistance. I am trying to test my service tree with a specific structure.

Here is an overview of my test:

describe(`Service selector`, () => {
  describe(`getCurrentServiceTree`, () => {
    it(`should build the generic service tree`, () => {
      // Test scenarios and expected results...
    });
  });
});

I am unsure if the issue lies with TypeScript, RxJS, or my code itself :(

When I hover over getCurrentServiceTree, I see the following:

(alias) getCurrentServiceTree(state: IStore): TreeElement[] import getCurrentServiceTree

I am uncertain about using Partial<T>. When I hover over it, I encounter this error message:

[ts] Argument of type '() => any' is not assignable to parameter of type 'IStore'. The property 'ui' is missing in type '() => any'.

// Code block related to getting current service tree...

export const getCurrentServiceTree = createSelector(
  //functions and logic...
);

Can someone please help me understand how to resolve this issue?

Answer №1

Today, I encountered the same error as well.

Initially, it was quite puzzling to pinpoint the source of the error.

To troubleshoot, here's what I did:

  • Instead of using ng test in headless mode, try running tests without headless mode and add the --no-sourcemaps argument

  • This provided a slightly clearer error message in the browser, indicating the problematic file

  • Despite this, it was still challenging to identify the exact issue. I discovered that while ng test doesn't show circular dependencies, ng serve does

  • Upon uncovering the function responsible for the circular dependency, I simply moved it to a different file (which actually made more sense)

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