Property ‘tobeinthedocument’ does not exist on type ‘jestmatchers

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The error message you provided indicates that the property “tobeinthedocument” does not exist on the type “jestmatchers” with arguments of “HTMLElement“.

This error is typically encountered when using Jest matchers to make assertions on DOM elements, but mistakenly using a non-existent property on the matchers.

To explain further, let’s say you have a test case where you want to check if a particular DOM element is present in the document: 

test("Example Test Case", () => {
  const element = document.querySelector("#myElement");
  expect(element).toBeInTheDocument();
});

In this example, the “toBeInTheDocument()” matcher is being used to assert that the element is present in the document. However, the error message suggests that this matcher is not recognized because it does not exist on the type “jestmatchers“. This can happen if you have made a typo or the matcher you are trying to use is not available in the version of Jest you are using.

To resolve this issue, you can either:

  • Check the spelling and syntax of the matcher you are using. It should be written correctly, like “toBeInTheDocument()“.
  • Verify that you are using the correct version of Jest that supports the desired matcher. Some matchers may have been introduced in later versions of Jest, so updating to a newer version might be necessary.

Here is an example of using a valid matcher in Jest to assert the presence of an element in the document: 

test("Example Test Case", () => {
  const element = document.querySelector("#myElement");
  expect(element).toBeInTheDocument();
});

In this updated example, the “toBeInTheDocument()” matcher is used instead, which is a valid matcher provided by Jest. This matcher checks if the element is present in the document and resolves the previous error.

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