next.js

4f5531b1 - Turbopack: support `config.turbopack` and deprecate `config.experimental.turbopack`. (#77850)

Turbopack: support `config.turbopack` and deprecate `config.experimental.turbopack`. (#77850) Closes PACK-4263 This: - Adds support for using `config.turbopack` for Turbopack. The accepted value for this option is identical to the previous experimental one without the deprecated field `loaders`. - Deprecates `config.experimental.turbo`. Warns on its use, but will continue to accept it, merging it with `config.turbopack` while preferring fields on `config.turbopack`. - also see https://github.com/vercel/next.js/pull/77850#pullrequestreview-2749738760 Test Plan: - [x] Convert use of `config.experimental.turbo` in tests to `config.turbopack` - [x] Automated test for accepting the experimental option for compatibility, as well as the config merging