see on GitHub

    How to Check if a Document Exists

    • To check whether the database contains a certain document,
      use the method exists() from the advanced session operations.

    • Calling 'exists' does not load the document entity to the session,
      and the session will not track it.

    • In this page:

    Check if document exists 

    const exists = await session.advanced.exists("employees/1-A");
if (exists) {
    // document 'employees/1-A exists
}

    Syntax 

    session.advanced.exists(id);
    Parameter Type Description
    id string The ID of the document to check
    Return Value Description
    Promise<boolean> true - the document exists in the database.
    false - The document does Not exist in the database

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