Breaking Changes

• relay-compiler is now implemented in Rust and it replaced the JS version from v12.
  • The motivation and details for this change are captured here: https://relay.dev/blog/2021/12/08/introducing-the-new-relay-compiler/
  • A few new features that are supported in the new compiler:
    • TypeScript code generation added to the compiler.
    • New directives:
      • @required: Improve the ergonomics of handling null values by declaratively telling Relay to either LOG, THROW, or bubble (NONE) null fields.
      • @no_inline: Disable inlining the fragment when it is used in normalization(query) artifacts. Reduce generated artifacts size if the fragment is used in many places.
    • Support for generic query persisting in the configuration.
  • Breaking changes in the new Relay compiler
    • No field aliases can start with two underscores; these are reserved for internal Relay use.
    • Export query hashes to JSON is removed.
  • The quick instructions on how to use the new compiler are here:
    • https://github.com/facebook/relay/blob/main/packages/relay-compiler/README.md
• Updates in runtime, React APIs, and generated flow types for better integration with Flow: and a first class support for types in flow for graphql tags. It may break some of the components that rely on the structure of the generated Relay flow-types.
• Statically flow-type the second parameter passed to updaters, optimistic updaters and commitLocalUpdate; it is now derived from the shape of the mutation and is optional. This type had previously been typed as $FlowFixMe (i.e. any); as a result, adding static types here is a breaking change.
• Removed relay-config.

For more details see:

• https://github.com/facebook/relay/releases/tag/v13.0.0-rc.0
• https://github.com/facebook/relay/releases/tag/v13.0.0-rc.1
• https://github.com/facebook/relay/releases/tag/v13.0.0-rc.2

Changes since RC.2

Added

• Allow Node interface id field to be configurable. (#3638)
• [2ea681c] Add FlatbufferSchema.has_type()

Fixed

• [995bb87] Add include option to single project config file, and warn if it is used.
• [504b5a8] add serde(alias = "exclude") to SingleProjectConfigFile
• [f0d7395] do not panic if query_type is not defined
• Update refetching-queries-with-different-data.md (#3714)
• [e0911d6] update doc references to renamed props
• [e959f5c] fix typo in fetch policies
• [ed24f9d] fix unused variables lints in relay-runtime
• [a93d922] fix test utils for ResolverFragments

Misc

• [e075107] Update copyright headers from Facebook to Meta
• [f16b8da] workaround rust-analyzer bug
• Remove outdated dependecies from package.json (#3712)
• [1f01910] Update generate_fixture_tests component on FBS:master
• [e31cac7] auto lint fixes
• [ebfa5b1] autocargo: ctp: depend on pxl instead of re-declaring its crates