fix: `items(JsonNode)` symbol not found (#87)

* chore: export subscriptions

This has a knock-on effect of nim-serde not being imported into subscriptions when JsonRpcProvider.new is called from a consumer that does not export nim-serde.

* import/export serde

* Replace all instances of std/json with pkg/serde

ethers/contract.nim

@@ -1,4 +1,4 @@
-import std/json
+import pkg/serde
 import std/macros
 import std/sequtils
 import pkg/chronicles

ethers/nimshims/hashes.nim

@@ -2,7 +2,7 @@
 ## `std/json.JsonNode.hash`, eg when using `JsonNode` as a `Table` key. Adds
 ## {.raises: [].} for proper exception tracking. Copied from the std/json module
 
-import std/json
+import pkg/serde
 import std/hashes
 
 {.push raises:[].}

ethers/providers/jsonrpc.nim

@@ -17,6 +17,7 @@ export basics
 export provider
 export chronicles
 export errors.JsonRpcProviderError
+export subscriptions
 
 {.push raises: [].}
 

ethers/providers/jsonrpc/subscriptions.nim

@@ -3,6 +3,7 @@ import std/sequtils
 import std/strutils
 import pkg/chronos
 import pkg/json_rpc/rpcclient
+import pkg/serde
 import ../../basics
 import ../../provider
 include ../../nimshims/hashes
@@ -10,6 +11,8 @@ import ./rpccalls
 import ./conversions
 import ./looping
 
+export serde
+
 type
   JsonRpcSubscriptions* = ref object of RootObj
     client: RpcClient

testmodule/hardhat.nim

@@ -1,4 +1,4 @@
-import std/json
+import pkg/serde
 import pkg/ethers/basics
 
 type Deployment* = object

testmodule/providers/jsonrpc/testErrors.nim

@@ -1,5 +1,5 @@
 import std/unittest
-import std/json
+import pkg/serde
 import pkg/questionable
 import pkg/ethers/providers/jsonrpc/errors
 

testmodule/providers/jsonrpc/testJsonRpcSubscriptions.nim

@@ -1,4 +1,4 @@
-import std/json
+import pkg/serde
 import std/os
 import std/sequtils
 import std/importutils

testmodule/testContracts.nim

@@ -1,4 +1,4 @@
-import std/json
+import pkg/serde
 import std/os
 import std/options
 import pkg/asynctest

testmodule/testCustomErrors.nim

@@ -1,5 +1,5 @@
 import std/os
-import std/json
+import pkg/serde
 import pkg/asynctest
 import pkg/ethers
 import ./hardhat

testmodule/testErc20.nim

@@ -1,5 +1,5 @@
 import std/os
-import std/json
+import pkg/serde
 import pkg/asynctest
 import pkg/questionable
 import pkg/stint