diff --git a/.gitignore b/.gitignore
index 307f9c0..e306283 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,7 @@
 /.*
 !/.gitignore
+!/.jscsrc
+!/.jshintrc
 !/.travis.yml
 /bower_components/
 /node_modules/
diff --git a/.jscsrc b/.jscsrc
new file mode 100644
index 0000000..2561ce9
--- /dev/null
+++ b/.jscsrc
@@ -0,0 +1,17 @@
+{
+  "preset": "grunt",
+  "disallowSpacesInFunctionExpression": null,
+  "requireSpacesInFunctionExpression": {
+    "beforeOpeningRoundBrace": true,
+    "beforeOpeningCurlyBrace": true
+  },
+  "disallowSpacesInAnonymousFunctionExpression": null,
+  "requireSpacesInAnonymousFunctionExpression": {
+    "beforeOpeningRoundBrace": true,
+    "beforeOpeningCurlyBrace": true
+  },
+  "disallowSpacesInsideObjectBrackets": null,
+  "requireSpacesInsideObjectBrackets": "all",
+  "validateQuoteMarks": "\"",
+  "requireCurlyBraces": null
+}
diff --git a/.jshintrc b/.jshintrc
new file mode 100644
index 0000000..81e6de7
--- /dev/null
+++ b/.jshintrc
@@ -0,0 +1,19 @@
+{
+  "bitwise": true,
+  "eqeqeq": true,
+  "forin": true,
+  "freeze": true,
+  "funcscope": true,
+  "futurehostile": true,
+  "strict": "global",
+  "latedef": true,
+  "noarg": true,
+  "nocomma": true,
+  "nonew": true,
+  "notypeof": true,
+  "singleGroups": true,
+  "undef": true,
+  "unused": true,
+  "eqnull": true,
+  "predef": ["exports"]
+}
diff --git a/README.md b/README.md
index fd962c8..b68c910 100644
--- a/README.md
+++ b/README.md
@@ -1,8 +1,7 @@
 # purescript-argonaut-core
 
-[![Latest release](http://img.shields.io/bower/v/purescript-argonaut-core.svg)](https://github.com/purescript-contrib/purescript-argonaut-core/releases)
+[![Latest release](http://img.shields.io/github/release/purescript-contrib/purescript-argonaut-core.svg)](https://github.com/purescript-contrib/purescript-argonaut-core/releases)
 [![Build Status](https://travis-ci.org/purescript-contrib/purescript-argonaut-core.svg?branch=master)](https://travis-ci.org/purescript-contrib/purescript-argonaut-core)
-[![Dependency Status](https://www.versioneye.com/user/projects/563a993c1d47d40019000870/badge.svg?style=flat)](https://www.versioneye.com/user/projects/563a993c1d47d40019000870)
 [![Maintainer: slamdata](https://img.shields.io/badge/maintainer-slamdata-lightgrey.svg)](http://github.com/slamdata)
 
 Core part of `purescript-argonaut` that contains basic types for `Json`, folds over them, tests, printer and parser.
diff --git a/bower.json b/bower.json
index 8057a6c..cf59dfa 100644
--- a/bower.json
+++ b/bower.json
@@ -18,11 +18,11 @@
   },
   "license": "MIT",
   "dependencies": {
-    "purescript-enums": "^1.0.0",
-    "purescript-functions": "^1.0.0",
-    "purescript-maps": "^1.0.0"
+    "purescript-enums": "^2.0.0",
+    "purescript-functions": "^2.0.0",
+    "purescript-maps": "^2.0.0"
   },
   "devDependencies": {
-    "purescript-strongcheck": "^1.0.0"
+    "purescript-strongcheck": "^2.0.0"
   }
 }
diff --git a/package.json b/package.json
index 1e0f657..703498c 100644
--- a/package.json
+++ b/package.json
@@ -2,13 +2,15 @@
   "private": true,
   "scripts": {
     "clean": "rimraf output && rimraf .pulp-cache",
-    "build": "pulp build --censor-lib --strict",
+    "build": "jshint src && jscs src && pulp build --censor-lib --strict",
     "test": "pulp test"
   },
   "devDependencies": {
-    "pulp": "^9.0.0",
+    "jscs": "^3.0.7",
+    "jshint": "^2.9.3",
+    "pulp": "^9.0.1",
     "purescript-psa": "^0.3.9",
-    "purescript": "^0.9.1",
-    "rimraf": "^2.5.0"
+    "purescript": "^0.10.1",
+    "rimraf": "^2.5.4"
   }
 }
diff --git a/src/Data/Argonaut/Core.js b/src/Data/Argonaut/Core.js
index 66ea53b..17f8d01 100644
--- a/src/Data/Argonaut/Core.js
+++ b/src/Data/Argonaut/Core.js
@@ -1,12 +1,11 @@
-// module Data.Argonaut.Core
+"use strict";
 
 function id(x) {
-    return x;
+  return x;
 }
-    
 
-exports.fromNull = function() {
-    return null;
+exports.fromNull = function () {
+  return null;
 };
 
 exports.fromBoolean = id;
@@ -17,104 +16,92 @@ exports.fromObject = id;
 
 exports.jsonNull = null;
 
-exports.stringify = function(j) {
-    return JSON.stringify(j);
+exports.stringify = function (j) {
+  return JSON.stringify(j);
 };
 
-exports._foldJson = function(isNull, isBool, isNum, isStr, isArr, isObj, j) {
-    if (j == null) return isNull(null);
-    else if (typeof j === 'boolean') return isBool(j);
-    else if (typeof j === 'number') return isNum(j);
-    else if (typeof j === 'string') return isStr(j);
-    else if (Object.prototype.toString.call(j) === '[object Array]')
-        return isArr(j);
-    else return isObj(j);
+var objToString = Object.prototype.toString;
+var objKeys = Object.keys;
+
+function isArray(a) {
+  return objToString.call(a) === "[object Array]";
+}
+
+exports._foldJson = function (isNull, isBool, isNum, isStr, isArr, isObj, j) {
+  if (j == null) return isNull(null);
+  else if (typeof j === "boolean") return isBool(j);
+  else if (typeof j === "number") return isNum(j);
+  else if (typeof j === "string") return isStr(j);
+  else if (objToString.call(j) === "[object Array]")
+    return isArr(j);
+  else return isObj(j);
 };
 
 function _compare(EQ, GT, LT, a, b) {
-    function isArray(a) {
-        return Object.prototype.toString.call(a) === '[object Array]';
-    }
-    function keys(o) {
-        var a = [];
-        for (var k in o) {
-            a.push(k);
-        }
-        return a;
-    }
-
-    if (a == null) {
-        if (b == null) return EQ;
-        else return LT;
-    } else if (typeof a === 'boolean') {
-        if (typeof b === 'boolean') {
-            // boolean / boolean
-            if (a === b) return EQ;
-            else if (a == false) return LT;
-            else return GT;
-        } else if (b == null) return GT;
-        else return LT;
-    } else if (typeof a === 'number') {
-        if (typeof b === 'number') {
-            if (a === b) return EQ;
-            else if (a < b) return LT;
-            else return GT;
-        } else if (b == null) return GT;
-        else if (typeof b === 'boolean') return GT;
-        else return LT;
-    } else if (typeof a === 'string') {
-        if (typeof b === 'string') {
-            if (a === b) return EQ;
-            else if (a < b) return LT;
-            else return GT;
-        } else if (b == null) return GT;
-        else if (typeof b === 'boolean') return GT;
-        else if (typeof b === 'number') return GT;
-        else return LT;
-    } else if (isArray(a)) {
-        if (isArray(b)) {
-            for (var i = 0; i < Math.min(a.length, b.length); i++) {
-                var c = _compare(EQ, GT, LT, a[i], b[i]);
-                
-                if (c !== EQ) return c;
-            }
-            if (a.length === b.length) return EQ;
-            else if (a.length < b.length) return LT;
-            else return GT;
-        } else if (b == null) return GT;
-        else if (typeof b === 'boolean') return GT;
-        else if (typeof b === 'number') return GT;
-        else if (typeof b === 'string') return GT;
-        else return LT;
-    }
+  if (a == null) {
+    if (b == null) return EQ;
+    else return LT;
+  } else if (typeof a === "boolean") {
+    if (typeof b === "boolean") {
+      // boolean / boolean
+      if (a === b) return EQ;
+      else if (a === false) return LT;
+      else return GT;
+    } else if (b == null) return GT;
+    else return LT;
+  } else if (typeof a === "number") {
+    if (typeof b === "number") {
+      if (a === b) return EQ;
+      else if (a < b) return LT;
+      else return GT;
+    } else if (b == null) return GT;
+    else if (typeof b === "boolean") return GT;
+    else return LT;
+  } else if (typeof a === "string") {
+    if (typeof b === "string") {
+      if (a === b) return EQ;
+      else if (a < b) return LT;
+      else return GT;
+    } else if (b == null) return GT;
+    else if (typeof b === "boolean") return GT;
+    else if (typeof b === "number") return GT;
+    else return LT;
+  } else if (isArray(a)) {
+    if (isArray(b)) {
+      for (var i = 0; i < Math.min(a.length, b.length); i++) {
+        var ca = _compare(EQ, GT, LT, a[i], b[i]);
+        if (ca !== EQ) return ca;
+      }
+      if (a.length === b.length) return EQ;
+      else if (a.length < b.length) return LT;
+      else return GT;
+    } else if (b == null) return GT;
+    else if (typeof b === "boolean") return GT;
+    else if (typeof b === "number") return GT;
+    else if (typeof b === "string") return GT;
+    else return LT;
+  } else {
+    if (b == null) return GT;
+    else if (typeof b === "boolean") return GT;
+    else if (typeof b === "number") return GT;
+    else if (typeof b === "string") return GT;
+    else if (isArray(b)) return GT;
     else {
-        if (b == null) return GT;
-        else if (typeof b === 'boolean') return GT;
-        else if (typeof b === 'number') return GT;
-        else if (typeof b === 'string') return GT;
-        else if (isArray(b)) return GT;
-        else {
-            var akeys = keys(a);
-            var bkeys = keys(b);
-            
-            var keys = akeys.concat(bkeys).sort();
-            
-            for (var i = 0; i < keys.length; i++) {
-                var k = keys[i];
-                
-                if (a[k] === undefined) return LT;
-                else if (b[k] === undefined) return GT;
-                
-                var c = _compare(EQ, GT, LT, a[k], b[k]);
-                
-                if (c !== EQ) return c;
-            }
-            
-            if (akeys.length === bkeys.length) return EQ;
-            else if (akeys.length < bkeys.length) return LT;
-            else return GT;
-        }
+      var akeys = objKeys(a);
+      var bkeys = objKeys(b);
+      if (akeys.length < bkeys.length) return LT;
+      else if (akeys.length > bkeys.length) return GT;
+      var keys = akeys.concat(bkeys).sort();
+      for (var j = 0; j < keys.length; j++) {
+        var k = keys[j];
+        if (a[k] === undefined) return LT;
+        else if (b[k] === undefined) return GT;
+        var ck = _compare(EQ, GT, LT, a[k], b[k]);
+        if (ck !== EQ) return ck;
+      }
+      return EQ;
     }
-};
+  }
+}
 
 exports._compare = _compare;
diff --git a/src/Data/Argonaut/Core.purs b/src/Data/Argonaut/Core.purs
index 4f91678..9869c22 100644
--- a/src/Data/Argonaut/Core.purs
+++ b/src/Data/Argonaut/Core.purs
@@ -88,10 +88,15 @@ foreign import data JNull :: *
 foreign import data Json :: *
 
 -- | Case analysis for `Json` values. See the README for more information.
-foldJson :: forall a.
-            (JNull -> a) -> (JBoolean -> a) -> (JNumber -> a) ->
-            (JString -> a) -> (JArray -> a) -> (JObject -> a) ->
-            Json -> a
+foldJson
+  :: forall a
+   . (JNull -> a)
+  -> (JBoolean -> a)
+  -> (JNumber -> a)
+  -> (JString -> a)
+  -> (JArray -> a)
+  -> (JObject -> a)
+  -> Json -> a
 foldJson a b c d e f json = runFn7 _foldJson a b c d e f json
 
 -- | A simpler version of `foldJson` which accepts a callback for when the
@@ -153,8 +158,11 @@ isObject = isJsonType foldJsonObject
 
 -- Decoding
 
-toJsonType :: forall a. (Maybe a -> (a -> Maybe a) -> Json -> Maybe a) ->
-              Json -> Maybe a
+toJsonType
+  :: forall a
+   . (Maybe a -> (a -> Maybe a) -> Json -> Maybe a)
+  -> Json
+  -> Maybe a
 toJsonType = verbJsonType Nothing Just
 
 toNull :: Json -> Maybe JNull
@@ -190,6 +198,7 @@ foreign import jsonNull :: Json
 
 jsonTrue :: Json
 jsonTrue = fromBoolean true
+
 jsonFalse :: Json
 jsonFalse = fromBoolean false
 
@@ -223,7 +232,7 @@ instance showJNull :: Show JNull where
   show _ = "null"
 
 instance eqJson :: Eq Json where
-  eq j1 j2 = (compare j1 j2) == EQ
+  eq j1 j2 = compare j1 j2 == EQ
 
 instance ordJson :: Ord Json where
   compare a b = runFn5 _compare EQ GT LT a b
@@ -231,10 +240,18 @@ instance ordJson :: Ord Json where
 instance showJson :: Show Json where
   show = stringify
 
--- Foreigns
-
 foreign import stringify :: Json -> String
-foreign import _foldJson :: forall z. Fn7 (JNull -> z) (JBoolean -> z)
-                            (JNumber -> z) (JString -> z) (JArray -> z)
-                            (JObject -> z) Json z
+
+foreign import _foldJson
+  :: forall z
+   . Fn7
+      (JNull -> z)
+      (JBoolean -> z)
+      (JNumber -> z)
+      (JString -> z)
+      (JArray -> z)
+      (JObject -> z)
+      Json
+      z
+
 foreign import _compare :: Fn5 Ordering Ordering Ordering Json Json Ordering
diff --git a/src/Data/Argonaut/Parser.js b/src/Data/Argonaut/Parser.js
index e48d568..ab6cf5b 100644
--- a/src/Data/Argonaut/Parser.js
+++ b/src/Data/Argonaut/Parser.js
@@ -1,10 +1,10 @@
-// module Data.Argonaut.Parser
+"use strict";
 
-exports._jsonParser = function(fail, succ, s) {
-    try {
-        return succ(JSON.parse(s));
-    }
-    catch(e) {
-        return fail(e.message);
-    }
+exports._jsonParser = function (fail, succ, s) {
+  try {
+    return succ(JSON.parse(s));
+  }
+  catch (e) {
+    return fail(e.message);
+  }
 };
diff --git a/test/Test/Main.js b/test/Test/Main.js
index 8f17505..0c7f950 100644
--- a/test/Test/Main.js
+++ b/test/Test/Main.js
@@ -1,11 +1,9 @@
-// module Test.Main
+"use strict";
 
 exports.thisIsNull = null;
 exports.thisIsBoolean = true;
 exports.thisIsNumber = 12;
 exports.thisIsString = "foobar";
 exports.thisIsArray = ["foo", "bar"];
-exports.thisIsObject = {
-    foo: "bar"
-};
+exports.thisIsObject = { foo: "bar" };
 exports.nil = null;