getByIdOrThrow

The `getByIdOrThrow` function is a common utility in programming, particularly in frameworks and libraries dealing with data retrieval. Its primary purpose is to fetch an object from a data source, such as a database or an in-memory collection, using its unique identifier. If the object with the specified ID is found, it is returned.

However, the distinctive feature of `getByIdOrThrow` lies in its behavior when the object is *not* found. Instead of returning a null or undefined value, which is typical for many "get" operations, this function will deliberately throw an error. This error-handling strategy is designed to immediately halt program execution or signal an exceptional condition when a required item is missing.

This approach is useful for enforcing data integrity and preventing potential `null` pointer exceptions or `undefined` property access errors that could occur later in the program flow. By throwing an error, `getByIdOrThrow` makes it explicit that the absence of the requested resource is an unexpected and potentially critical situation. Developers are then required to handle this error, typically using a `try-catch` block, to manage the scenario gracefully, perhaps by displaying an error message to the user or logging the issue. This contrasts with methods that return `null` or `undefined`, where the responsibility of checking for the absence of the object falls on the caller, and is sometimes overlooked.