make it compile for otp >= 17

Author: zmstone

include/rafter_consensus_fsm.hrl

@@ -8,6 +8,10 @@
     %% only used during read_only commands
     cmd :: term()}).
 
+-ifdef(otp17orNewer).
+-type dict() :: dict:dict().
+-endif.
+
 -record(state, {
     leader :: term(),
     term = 0 :: non_neg_integer(),

rebar.config

@@ -2,7 +2,7 @@
 
 {lib_dirs, ["deps", "apps"]}.
 
-{erl_opts, [debug_info, warnings_as_errors, {parse_transform, lager_transform}]}.
+{erl_opts, [debug_info, warnings_as_errors, {parse_transform, lager_transform}, {platform_define, "^[1-9]", otp17orNewer}]}.
 
 {deps, [{lager, ".*", {git, "git://github.com/basho/lager", {tag, "2.0.1"}}},
         {druuid, ".*", {git, "git://github.com/kellymclaughlin/druuid.git", {tag, "0.2"}}} 

src/rafter_config.erl

@@ -6,6 +6,10 @@
 -export([quorum/3, quorum_max/3, voters/1, voters/2, followers/2,
          reconfig/2, allow_config/2, has_vote/2]).
 
+-ifdef(otp17orNewer).
+-type dict() :: dict:dict().
+-endif.
+
 %%====================================================================
 %% API
 %%====================================================================