Use Jason Instead of JSX

Given that the broader Elixir community is circling their wagons around
Jason, and issue #153, it seems that moving to Jason would be a wise
choice.

lib/exvcr/iex.ex

@@ -25,9 +25,11 @@ defmodule ExVCR.IEx do
             unquote(test)
           after
             ExVCR.MockLock.release_lock()
-            Recorder.get(recorder)
-            |> JSX.encode!
-            |> JSX.prettify!
+
+            recorder
+            |> Recorder.get()
+            |> Jason.encode_to_iodata!()
+            |> Jason.Formatter.pretty_print_to_iodata()
             |> IO.puts
           end
           :ok

lib/exvcr/json.ex

@@ -7,11 +7,12 @@ defmodule ExVCR.JSON do
   Save responses into the json file.
   """
   def save(file_name, recordings) do
-    json = recordings
-    |> Enum.map(&encode_binary_data/1)
-    |> Enum.reverse()
-    |> JSX.encode!()
-    |> JSX.prettify!()
+    json =
+      recordings
+      |> Enum.map(&encode_binary_data/1)
+      |> Enum.reverse()
+      |> Jason.encode_to_iodata!()
+      |> Jason.Formatter.pretty_print_to_iodata()
 
     unless File.exists?(path = Path.dirname(file_name)), do: File.mkdir_p!(path)
     File.write!(file_name, json)
@@ -48,7 +49,7 @@ defmodule ExVCR.JSON do
   def read_json_file(file_name) do
     file_name
     |> File.read!()
-    |> JSX.decode!()
+    |> Jason.decode!()
     |> Enum.map(&load_binary_data/1)
   end
 

lib/exvcr/records.ex

@@ -2,17 +2,51 @@ defmodule ExVCR.Record do
   defstruct options: nil, responses: nil
 end
 
+defmodule ExVCR.Utils do
+  @moduledoc false
+
+  def keyword_to_map(kw) do
+    Enum.reduce(kw, %{}, fn {k, v}, acc -> Map.put(acc, k, v) end)
+  end
+end
+
 defmodule ExVCR.Request do
   defstruct url: nil, headers: [], method: nil, body: nil, options: [], request_body: ""
+
+  defimpl Jason.Encoder, for: ExVCR.Request do
+    def encode(value, opts) do
+      %{headers: headers, options: options} = Map.take(value, [:headers, :options])
+
+      map = value
+            |> Map.take([:url, :method, :body, :request_body])
+            |> Map.put(:headers, ExVCR.Utils.keyword_to_map(headers))
+            |> Map.put(:options, ExVCR.Utils.keyword_to_map(options))
+
+      Jason.Encode.map(map, opts)
+    end
+  end
 end
 
 defmodule ExVCR.Response do
   defstruct type: "ok", status_code: nil, headers: [], body: nil, binary: false
+
+  defimpl Jason.Encoder, for: ExVCR.Response do
+    def encode(value, opts) do
+      headers = Map.get(value, :headers)
+
+      map = value
+            |> Map.take([:type, :status_code, :body, :binary])
+            |> Map.put(:headers, ExVCR.Utils.keyword_to_map(headers))
+
+      Jason.Encode.map(map, opts)
+    end
+  end
 end
 
 defmodule ExVCR.Checker.Results do
   defstruct dirs: nil, files: []
 end
+
 defmodule ExVCR.Checker.Counts do
   defstruct server: 0, cache: 0
 end

lib/exvcr/task/show.ex

@@ -16,7 +16,7 @@ defmodule ExVCR.Task.Show do
       IO.puts "\e[32mShowing #{file}\e[m"
       IO.puts "\e[32m**************************************\e[m"
       json = File.read!(file)
-      IO.puts json |> JSX.prettify! |> String.replace(~r/\\n/, "\n")
+      IO.puts json |> Jason.Formatter.pretty_print() |> String.replace(~r/\\n/, "\n")
       display_parsed_body(json)
       IO.puts "\e[32m**************************************\e[m"
     else
@@ -25,17 +25,19 @@ defmodule ExVCR.Task.Show do
   end
 
   defp display_parsed_body(json) do
-    case extract_body(json) |> JSX.prettify do
-      {:ok, body_json } ->
-        IO.puts "\n\e[33m[Showing parsed JSON body]\e[m"
-        IO.puts body_json
-      _ -> nil
+    try do
+      json
+      |> extract_body()
+      |> Jason.Formatter.pretty_print()
+    rescue
+      _ ->
+        nil
     end
   end
 
   defp extract_body(json) do
     json
-    |> JSX.decode!()
+    |> Jason.decode!()
     |> List.first()
     |> Enum.into(%{})
     |> get_in(["responce", "body"])

mix.exs

@@ -20,14 +20,14 @@ defmodule ExVCR.Mixfile do
   end
 
   def application do
-    [applications: [:meck, :exactor, :exjsx], mod: {ExVCR.Application, []}]
+    [applications: [:meck, :exactor], mod: {ExVCR.Application, []}]
   end
 
   def deps do
     [
       {:meck, "~> 0.8"},
       {:exactor, "~> 2.2"},
-      {:exjsx, "~> 4.0"},
+      {:jason, "~> 1.0"},
       {:ibrowse, "4.4.0", optional: true},
       {:httpotion, "~> 3.1", optional: true},
       {:httpoison, "~> 1.0", optional: true},

mix.lock

@@ -7,7 +7,6 @@
   "ex_doc": {:hex, :ex_doc, "0.21.3", "857ec876b35a587c5d9148a2512e952e24c24345552259464b98bfbb883c7b42", [:mix], [{:earmark, "~> 1.4", [hex: :earmark, repo: "hexpm", optional: false]}, {:makeup_elixir, "~> 0.14", [hex: :makeup_elixir, repo: "hexpm", optional: false]}], "hexpm", "0db1ee8d1547ab4877c5b5dffc6604ef9454e189928d5ba8967d4a58a801f161"},
   "exactor": {:hex, :exactor, "2.2.4", "5efb4ddeb2c48d9a1d7c9b465a6fffdd82300eb9618ece5d34c3334d5d7245b1", [:mix], [], "hexpm", "1222419f706e01bfa1095aec9acf6421367dcfab798a6f67c54cf784733cd6b5"},
   "excoveralls": {:hex, :excoveralls, "0.14.2", "f9f5fd0004d7bbeaa28ea9606251bb643c313c3d60710bad1f5809c845b748f0", [:mix], [{:hackney, "~> 1.16", [hex: :hackney, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}], "hexpm", "ca6fd358621cb4d29311b29d4732c4d47dac70e622850979bc54ed9a3e50f3e1"},
-  "exjsx": {:hex, :exjsx, "4.0.0", "60548841e0212df401e38e63c0078ec57b33e7ea49b032c796ccad8cde794b5c", [:mix], [{:jsx, "~> 2.8.0", [hex: :jsx, repo: "hexpm", optional: false]}], "hexpm", "32e95820a97cffea67830e91514a2ad53b888850442d6d395f53a1ac60c82e07"},
   "finch": {:hex, :finch, "0.8.0", "9fe1b7b1613f4f0f43ac4be94462a0f3eb13264e5e9a624005da5670e452a1d1", [:mix], [{:castore, "~> 0.1", [hex: :castore, repo: "hexpm", optional: false]}, {:mint, "~> 1.3", [hex: :mint, repo: "hexpm", optional: false]}, {:nimble_options, "~> 0.3.5", [hex: :nimble_options, repo: "hexpm", optional: false]}, {:nimble_pool, "~> 0.2", [hex: :nimble_pool, repo: "hexpm", optional: false]}, {:telemetry, "~> 0.4", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "07650fd74da3fb51984b9f62bf4db3ef720f3c06d914d716cceeb13a2bc2542d"},
   "hackney": {:hex, :hackney, "1.17.4", "99da4674592504d3fb0cfef0db84c3ba02b4508bae2dff8c0108baa0d6e0977c", [:rebar3], [{:certifi, "~>2.6.1", [hex: :certifi, repo: "hexpm", optional: false]}, {:idna, "~>6.1.0", [hex: :idna, repo: "hexpm", optional: false]}, {:metrics, "~>1.0.0", [hex: :metrics, repo: "hexpm", optional: false]}, {:mimerl, "~>1.1", [hex: :mimerl, repo: "hexpm", optional: false]}, {:parse_trans, "3.3.1", [hex: :parse_trans, repo: "hexpm", optional: false]}, {:ssl_verify_fun, "~>1.1.0", [hex: :ssl_verify_fun, repo: "hexpm", optional: false]}, {:unicode_util_compat, "~>0.7.0", [hex: :unicode_util_compat, repo: "hexpm", optional: false]}], "hexpm", "de16ff4996556c8548d512f4dbe22dd58a587bf3332e7fd362430a7ef3986b16"},
   "http_server": {:git, "https://github.com/parroty/http_server.git", "922d10420836a51289ed04f0bb5022bf695da1ab", []},
@@ -16,7 +15,6 @@
   "ibrowse": {:hex, :ibrowse, "4.4.0", "2d923325efe0d2cb09b9c6a047b2835a5eda69d8a47ed6ff8bc03628b764e991", [:rebar3], [], "hexpm", "6a8e5988872086f0506bef68311493551ac5beae7c06ba2a00d5e9f97a60f1c2"},
   "idna": {:hex, :idna, "6.1.1", "8a63070e9f7d0c62eb9d9fcb360a7de382448200fbbd1b106cc96d3d8099df8d", [:rebar3], [{:unicode_util_compat, "~>0.7.0", [hex: :unicode_util_compat, repo: "hexpm", optional: false]}], "hexpm", "92376eb7894412ed19ac475e4a86f7b413c1b9fbb5bd16dccd57934157944cea"},
   "jason": {:hex, :jason, "1.2.2", "ba43e3f2709fd1aa1dce90aaabfd039d000469c05c56f0b8e31978e03fa39052", [:mix], [{:decimal, "~> 1.0 or ~> 2.0", [hex: :decimal, repo: "hexpm", optional: true]}], "hexpm", "18a228f5f0058ee183f29f9eae0805c6e59d61c3b006760668d8d18ff0d12179"},
-  "jsx": {:hex, :jsx, "2.8.3", "a05252d381885240744d955fbe3cf810504eb2567164824e19303ea59eef62cf", [:mix, :rebar3], [], "hexpm", "fc3499fed7a726995aa659143a248534adc754ebd16ccd437cd93b649a95091f"},
   "makeup": {:hex, :makeup, "1.0.0", "671df94cf5a594b739ce03b0d0316aa64312cee2574b6a44becb83cd90fb05dc", [:mix], [{:nimble_parsec, "~> 0.5.0", [hex: :nimble_parsec, repo: "hexpm", optional: false]}], "hexpm", "a10c6eb62cca416019663129699769f0c2ccf39428b3bb3c0cb38c718a0c186d"},
   "makeup_elixir": {:hex, :makeup_elixir, "0.14.0", "cf8b7c66ad1cff4c14679698d532f0b5d45a3968ffbcbfd590339cb57742f1ae", [:mix], [{:makeup, "~> 1.0", [hex: :makeup, repo: "hexpm", optional: false]}], "hexpm", "d4b316c7222a85bbaa2fd7c6e90e37e953257ad196dc229505137c5e505e9eff"},
   "meck": {:hex, :meck, "0.9.2", "85ccbab053f1db86c7ca240e9fc718170ee5bda03810a6292b5306bf31bae5f5", [:rebar3], [], "hexpm", "81344f561357dc40a8344afa53767c32669153355b626ea9fcbc8da6b3045826"},