Property ‘tobeinthedocument’ does not exist on type ‘jestmatchers

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Error: Property ‘tobeinthedocument’ does not exist on type ‘jestmatchers’

This error occurs when you are trying to access a property called ‘tobeinthedocument’ on an object of type ‘jestmatchers’,
but this property does not exist on ‘jestmatchers’ type. The error is indicating that the property you are trying to access
is not defined on the object you are referencing.

To fix this error, you need to make sure that the property ‘tobeinthedocument’ is defined on the ‘jestmatchers’ object before accessing it.
If you are using a library or external code, check the documentation or the typings file to see if the property exists and is spelled correctly.
If you are defining the ‘jestmatchers’ object yourself, make sure that you have correctly defined the property with the correct name and type.

Here is an example to help you understand the issue better: 


    // Incorrect usage
    const matchers: jestmatchers = { // assuming 'jestmatchers' type does not have 'tobeinthedocument' property
      // ...
    };

    expect(matchers.tobeinthedocument).toBeTruthy(); // Property 'tobeinthedocument' does not exist on type 'jestmatchers'

    // Correct usage
    interface JestMatchers {
      tobeinthedocument: () => boolean;
    }
    
    const matchers: JestMatchers = {
      tobeinthedocument: () => true,
      // ...
    };

    expect(matchers.tobeinthedocument()).toBeTruthy(); // No error since 'tobeinthedocument' property is defined on 'JestMatchers'

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