There's a full page of API breaks: https://github.com/microsoft/TypeScript/wiki/API-Breaking-Ch...
Then, a new error about the deprecations of ancient options to be removed in 5.5: https://github.com/microsoft/TypeScript/issues/51909
Then, a new error about the deprecations of ancient options to be removed in 5.5: https://github.com/microsoft/TypeScript/issues/51909