15.2.0

Added

• Add a way to pass an RPC service to createFetchMiddleware (#357)
  • The new, recommended function signature is now createFetchMiddleware({ rpcService: AbstractRpcService; options?: { originHttpHeaderKey?: string; } }), where AbstractRpcService matches the same interface from @metamask/network-controller
  • This allows us to support automatic failover to a secondary node when the network goes down

Changed

• Bump @metamask/utils to ^11.1.0 (#358)

Deprecated

• Deprecate passing an RPC endpoint to createFetchMiddleware (#357)
  • See recommended function signature above
  • The existing signature createFetchMiddleware({ btoa: typeof btoa; fetch: typeof fetch; rpcUrl: string; originHttpHeaderKey?: string; }) will be removed in a future major version
• Deprecate PayloadWithOrigin type (#357)
  • There is no replacement for this type; it will be removed in a future major version.