Breaking Changes

• Deprecate returning non-model weak types from resolvers. If you were using client side resolvers with the @outputType directive, these must be migrated to be strong or weak objects. You can continue to use the @outputType directive by enabling the allow_output_type_resolvers feature flag in the compiler config. (#5004) by Jordan Eldredge (commit)

Bug fixes

• Fix operation cleanup in RelayModernMockEnvironment by Martin Booth (commit)
• Fix nested @defer + 3D when server doesn't support streaming by Tianyu Yao (commit)
• Fix nested @defer when server doesn't support streaming by Tianyu Yao (commit)
• Fix incremental bug where resolver artifacts were not cleaned up by Jordan Eldredge (commit)
• Fetch missing client edge server queries discovered in nested fragments (#4992) by Jordan Eldredge (commit)
• Pass client edge context to resolver root fragments by Jordan Eldredge (commit)
• Fix variable name for imported model resolvers when using ES module imports (#4984) by Jordan Eldredge (commit)
• Fix excluding generated dir under xplat_react by Tianyu Yao (commit)

Improvements

• Add more time loggings in try_saved_state by Tianyu Yao (commit)
• Log saved state info query time in relay compiler by Lynn Yu (commit)
• Annotate read time resolver promises by Tianyu Yao (commit)
• Add VSCode tasks for common commands (#5003) by Jordan Eldredge (commit)
• Surface prefetchExpiryInHours from the entrypoint by Alice Liu (commit)
• Regression test for client edge server data discovered missing in resolver root fragment (#4994) by Jordan Eldredge (commit)
• Run client edge tests for both versions of useFragment by Jordan Eldredge (commit)
• Update babel transform to default to default to ES modules to match compiler behavior (#4982) by Jordan Eldredge (commit)
• Stop unnecessary runtime transforms by Lynn Yu (commit)
• Support enquoted field alias by Arseniy Panfilov (commit)
• Parser option to allow literal string aliases by Arseniy Panfilov (commit)

Documentation Improvements

• Update graphql.md readability (#5018) by Josh Maloon (commit)
• Add argument definitions to usePaginationFragment docs (#5015) by DrillableBit (commit)
• Remove docs on comet_routing_prefetch by Nithik Balachandran (commit)
• Fix typo in description of the @throwOnFieldError directive by Marius Schulz (commit)
• A couple grammar fixes (#5008) by Roman A (commit)
• Replace out of date compiler readme with link to up-to-date docs page (#5005) by Jordan Eldredge (commit)
• Handle args and returns, convert useLazyLoadQuery by Tianyu Yao (commit)
• Parse some docblock syntax and gen markdown for useRelayEnvironment by Tianyu Yao (commit)
• Pass compiler config json schema as a prop (#4997) by Jordan Eldredge (commit)
• Add docs page describing the Relay lint rules by Jordan Eldredge (commit)
• Prevent json schema css for h2 from leaking into the rest of the site by Jordan Eldredge (commit)
• Compiler Docs: Improve separators in JSON arrays and objects (#4990) by Jordan Eldredge (commit)
• Make comment into doc comment in config struct (#4989) by Jordan Eldredge (commit)
• Fill in missing documentation in compiler config by Jordan Eldredge (commit)
• Add page documenting the compiler config (#4985) by Jordan Eldredge (commit)
• Add missing generic type parameter for mutation tutorial example (#4981) by Joey Yu (commit)
• Fixups to quickstart (#4983) by Jordan Eldredge (commit)
• Update quick start guide to align with new version of Relay by Jordan Eldredge (commit)

Experimental Changes

• Do not mark a query as inactive when waiting for resolver or server payload by Tianyu Yao (commit)
• In a exec time query, mark query as completed if all initial payloads are received by Tianyu Yao (commit)
• Fix operation executor for exec time by Tianyu Yao (commit)
• Expose a loadClientQuery helper by Tianyu Yao (commit)
• Support normalized responses in OperationExecutor by Tianyu Yao (commit)