2.0.0

Commits:v1.7.0...v2.0.0

Breaking

• Relay now usesnew Context API instead of Legacy Context API. Any consumers of Relay context using the Legacy context API will break.
  • Removed experimental support for @deferrable directive
• Upgradegraphql to14.0.0
• Upgradereact to16.5.0
• relay-compiler: RenameinputFieldWhitelist tooptionalInputFields.
• Merge graphql-compiler into relay-compiler (#2593)
• Selector type returned byenvironment.unstable_internal.getSelector(...) has changed.

Added

• ReactRelayContext is now exported fromreact-relay.
• Added fragment ownership model to relay-runtime: fragments can now point to the query that owns them, which removes reliance on React Context and gives us flexibility to experiment with new apis.
• Persisted queries: Enables a simple but straightforward mechanism to use persisted queries in open-source. (#2354)
• @arguments directive now supports literal values.
• Add 'severity' field toPayloadError in RelayNetwork interface.
• Add support for specifyingmissingFieldHandlers in the Relay environment. These handlers allow developers to provide a fallback for missing data for a query whenenvironment.check() is called.
• Add support making GC scheduling configurable in the Relay environment.
• Allow passing a custom handler to@connection. This is useful for products that want to customize the way newly fetched items are merged into an existing connection.

Fixed

• recycleNodesInto no longer produces runtime error inDEV mode trying to mutate frozen objects (#2193)
• Fixed receiving payloads out of order in QueryRenderer.
• Fixed issue in Pagination Container when receiving new props.
• Fix incorrectly garbage collecting data during an optimistic update.
• Correctly fix double fetching with QueryRenderer in React Concurrent mode.
• Fix rendering sibling QueryRenderers that have the same query and variables.

Improved

• Improved compiler error messages, which now show locations in source.
• Updated the structure of generatedConcreteRequest to provide more flexibility for our fetching apis.
• Cleaned up Reader and Normalization AST representation.
• Upgrade build dependencies to Babel 7 and Webpack 4.
• Make generated Flow types for Input types exact objects.
• Simplify structure of network payloads.
• RenameRelayMarkSweepStore toRelayModernStore.

Experimental

• Added support for new@match directive for dynamically loading code and data dependencies determined by server. No user api is provided yet.
• Added support for @refetchable directive which automatically generates a query for a fragment that is “refetchable” (i.e. a fragment onViewer,Query, or a type that implementsNode). No user api is provided yet.