server: Only perform dynamic registration if client supports it #763
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The server shouldn't send a
client/registerCapability
unless the client signals support with the dynamicRegistration client capability set to true for didChangeConfiguration. This change checks that field before attempting to register for config change notifications.This change is important for clients that don't support dynamic capability registration: if we reply to the registerCapability request with a MethodNotHandled JSONRPC error, the promise from
connection.client.register
is rejected which causes the server to exit.