Merge pull request #27 from ethul/topic/issue-26

Topic/issue 26

17 files changed, 294 insertions, 228 deletions

diff --git a/src/FS.purs b/src/FS.purs
deleted file mode 100644
index 6955a63..0000000
--- a/src/FS.purs
+++ /dev/null
@@ -1,67 +0,0 @@
-module PursLoader.FS
-  ( FS()
-  , writeFileUtf8
-  , findFileUtf8
-  ) where
-
-import Control.Monad.Aff (Aff(), makeAff)
-import Control.Monad.Eff (Eff())
-import Control.Monad.Eff.Exception (Error())
-
-import Data.Maybe (Maybe(..))
-import Data.String.Regex (Regex())
-
-import Data.Function
-
-foreign import data FS :: !
-
-writeFileUtf8 :: forall eff. String -> String -> Aff (fs :: FS | eff) Unit
-writeFileUtf8 filepath contents = makeAff $ runFn4 writeFileUtf8Fn filepath contents
-
-foreign import writeFileUtf8Fn """
-function writeFileUtf8Fn(filepath, contents, errback, callback) {
-  return function(){
-    var fs = require('fs');
-
-    fs.writeFile(filepath, contents, function(error){
-      if (error) errback(error)();
-      else callback()();
-    });
-  };
-}
-""" :: forall eff. Fn4 String
-                       String
-                       (Error -> Eff (fs :: FS | eff) Unit)
-                       (Unit -> Eff (fs :: FS | eff) Unit)
-                       (Eff (fs :: FS | eff) Unit)
-
-findFileUtf8 :: forall eff. Regex -> [String] -> Aff (fs :: FS | eff) (Maybe String)
-findFileUtf8 regexp filepaths = makeAff $ runFn6 findFileUtf8Fn Nothing Just regexp filepaths
-
-foreign import findFileUtf8Fn """
-function findFileUtf8Fn(nothing, just, regex, filepaths, errback, callback) {
-  return function(){
-    var fs = require('fs');
-
-    var async = require('async');
-
-    function findFile(filepath, callback) {
-      fs.readFile(filepath, {encoding: 'utf-8'}, function(error, result){
-        if (error) callback(false);
-        else callback(regex.test(result));
-      });
-    }
-
-    async.detect(filepaths, findFile, function(result){
-      if (!result) callback(nothing)();
-      else callback(just(result))();
-    });
-  };
-}
-""" :: forall eff. Fn6 (Maybe String)
-                       (String -> Maybe String)
-                       Regex
-                       [String]
-                       (Error -> Eff (fs :: FS | eff) Unit)
-                       (Maybe String -> Eff (fs :: FS | eff) Unit)
-                       (Eff (fs :: FS | eff) Unit)
diff --git a/src/Glob.purs b/src/Glob.purs
deleted file mode 100644
index 392d9e4..0000000
--- a/src/Glob.purs
+++ /dev/null
@@ -1,33 +0,0 @@
-module PursLoader.Glob
-  ( Glob()
-  , globAll
-  ) where
-
-import Control.Monad.Aff (Aff(), makeAff)
-import Control.Monad.Eff (Eff())
-import Control.Monad.Eff.Exception (Error())
-
-import Data.Function
-
-foreign import data Glob :: !
-
-globAll :: forall eff. [String] -> Aff (glob :: Glob | eff) [[String]]
-globAll patterns = makeAff $ runFn3 globAllFn patterns
-
-foreign import globAllFn """
-function globAllFn(patterns, errback, callback) {
-  return function(){
-    var glob = require('glob');
-
-    var async = require('async');
-
-    async.map(patterns, glob, function(error, result){
-      if (error) errback(new Error(error))();
-      else callback(result)();
-    });
-  };
-}
-""" :: forall eff. Fn3 [String]
-                       (Error -> Eff (glob :: Glob | eff) Unit)
-                       ([[String]] -> Eff (glob :: Glob | eff) Unit)
-                       (Eff (glob :: Glob | eff) Unit)
diff --git a/src/LoaderRef.purs b/src/LoaderRef.purs
deleted file mode 100644
index f1efa04..0000000
--- a/src/LoaderRef.purs
+++ /dev/null
@@ -1,74 +0,0 @@
-module PursLoader.LoaderRef
-  ( LoaderRef()
-  , Loader()
-  , async
-  , cacheable
-  , query
-  , clearDependencies
-  , addDependency
-  , resourcePath
-  ) where
-
-import Control.Monad.Eff (Eff())
-import Control.Monad.Eff.Exception (Error())
-
-import Data.Function (Fn3(), runFn3)
-import Data.Maybe (Maybe(), fromMaybe, isJust)
-
-data LoaderRef
-
-foreign import data Loader :: !
-
-foreign import asyncFn """
-function asyncFn(isJust, fromMaybe, ref){
-  return function(){
-    var callback = ref.async();
-    return function(error){
-      return function(value){
-        return function(){
-          return isJust(error) ? callback(fromMaybe(new Error())(error))
-                               : callback(null, value);
-        };
-      };
-    };
-  };
-}""" :: forall eff a. Fn3 (Maybe Error -> Boolean)
-                          (Error -> Maybe Error -> Error)
-                          LoaderRef
-                          (Eff (loader :: Loader | eff) (Maybe Error -> a -> Eff (loader :: Loader | eff) Unit))
-
-async :: forall eff a. LoaderRef -> Eff (loader :: Loader | eff) (Maybe Error -> a -> Eff (loader :: Loader | eff) Unit)
-async ref = runFn3 asyncFn isJust fromMaybe ref
-
-foreign import cacheable """
-function cacheable(ref){
-  return function(){
-    return ref.cacheable && ref.cacheable();
-  };
-}""" :: forall eff. LoaderRef -> Eff (loader :: Loader | eff) Unit
-
-foreign import query """
-function query(ref){
-  return ref.query;
-}""" :: LoaderRef -> String
-
-foreign import clearDependencies """
-function clearDependencies(ref){
-  return function(){
-    return ref.clearDependencies();
-  };
-}""" :: forall eff. LoaderRef -> Eff (loader :: Loader | eff) Unit
-
-foreign import resourcePath """
-function resourcePath(ref){
-  return ref.resourcePath;
-}""" :: LoaderRef -> String
-
-foreign import addDependency """
-function addDependency(ref){
-  return function(dep){
-    return function(){
-      return ref.addDependency(dep);
-    };
-  };
-}""" :: forall eff. LoaderRef -> String -> Eff (loader :: Loader | eff) Unit
diff --git a/src/LoaderUtil.purs b/src/LoaderUtil.purs
deleted file mode 100644
index 86be124..0000000
--- a/src/LoaderUtil.purs
+++ /dev/null
@@ -1,13 +0,0 @@
-module PursLoader.LoaderUtil
-  ( parseQuery
-  ) where
-
-import Data.Foreign (Foreign())
-
-import PursLoader.LoaderRef (LoaderRef())
-
-foreign import parseQuery """
-function parseQuery(query){
-  var loaderUtils = require('loader-utils');
-  return loaderUtils.parseQuery(query);
-}""" :: String -> Foreign
diff --git a/src/ChildProcess.purs b/src/PursLoader/ChildProcess.js
index 34558fa..d62aef6 100644
--- a/src/ChildProcess.purs
+++ b/src/PursLoader/ChildProcess.js
@@ -1,24 +1,13 @@
-module PursLoader.ChildProcess
-  ( ChildProcess()
-  , spawn
-  ) where
+'use strict';
 
-import Control.Monad.Aff (Aff(), makeAff)
-import Control.Monad.Eff (Eff())
-import Control.Monad.Eff.Exception (Error())
+// module PursLoader.ChildProcess
 
-import Data.Function
+var child_process = require('child_process');
 
-foreign import data ChildProcess :: !
+var chalk = require('chalk');
 
-spawn :: forall eff. String -> [String] -> Aff (cp :: ChildProcess | eff) String
-spawn command args = makeAff $ runFn4 spawnFn command args
-
-foreign import spawnFn """
 function spawnFn(command, args, errback, callback) {
   return function(){
-    var child_process = require('child_process');
-
     var process = child_process.spawn(command, args);
 
     var stdout = new Buffer(0);
@@ -34,8 +23,6 @@ function spawnFn(command, args, errback, callback) {
     });
 
     process.on('close', function(code){
-      var chalk = require('chalk');
-
       var output = stdout.toString('utf-8');
 
       var error = stderr.toString('utf-8');
@@ -49,8 +36,5 @@ function spawnFn(command, args, errback, callback) {
     });
   };
 }
-""" :: forall eff. Fn4 String
-                       [String]
-                       (Error -> Eff (cp :: ChildProcess | eff) Unit)
-                       (String -> Eff (cp :: ChildProcess | eff) Unit)
-                       (Eff (cp :: ChildProcess | eff) Unit)
+
+exports.spawnFn = spawnFn;
diff --git a/src/PursLoader/ChildProcess.purs b/src/PursLoader/ChildProcess.purs
new file mode 100644
index 0000000..3bd960b
--- /dev/null
+++ b/src/PursLoader/ChildProcess.purs
@@ -0,0 +1,23 @@
+module PursLoader.ChildProcess
+  ( ChildProcess()
+  , spawn
+  ) where
+
+import Prelude (Unit(), ($))
+
+import Control.Monad.Aff (Aff(), makeAff)
+import Control.Monad.Eff (Eff())
+import Control.Monad.Eff.Exception (Error())
+
+import Data.Function
+
+foreign import data ChildProcess :: !
+
+spawn :: forall eff. String -> Array String -> Aff (cp :: ChildProcess | eff) String
+spawn command args = makeAff $ runFn4 spawnFn command args
+
+foreign import spawnFn :: forall eff. Fn4 String
+                                          (Array String)
+                                          (Error -> Eff (cp :: ChildProcess | eff) Unit)
+                                          (String -> Eff (cp :: ChildProcess | eff) Unit)
+                                          (Eff (cp :: ChildProcess | eff) Unit)
diff --git a/src/PursLoader/FS.js b/src/PursLoader/FS.js
new file mode 100644
index 0000000..1a7f5b0
--- /dev/null
+++ b/src/PursLoader/FS.js
@@ -0,0 +1,36 @@
+'use strict';
+
+// module PursLoader.FS
+
+var fs = require('fs');
+
+var async = require('async');
+
+function writeFileUtf8Fn(filepath, contents, errback, callback) {
+  return function(){
+    fs.writeFile(filepath, contents, function(error){
+      if (error) errback(error)();
+      else callback()();
+    });
+  };
+}
+
+function findFileUtf8Fn(nothing, just, regex, filepaths, errback, callback) {
+  return function(){
+    function findFile(filepath, callback) {
+      fs.readFile(filepath, {encoding: 'utf-8'}, function(error, result){
+        if (error) callback(false);
+        else callback(regex.test(result));
+      });
+    }
+
+    async.detect(filepaths, findFile, function(result){
+      if (!result) callback(nothing)();
+      else callback(just(result))();
+    });
+  };
+}
+
+exports.writeFileUtf8Fn = writeFileUtf8Fn;
+
+exports.findFileUtf8Fn = findFileUtf8Fn;
diff --git a/src/PursLoader/FS.purs b/src/PursLoader/FS.purs
new file mode 100644
index 0000000..969e3d0
--- /dev/null
+++ b/src/PursLoader/FS.purs
@@ -0,0 +1,38 @@
+module PursLoader.FS
+  ( FS()
+  , writeFileUtf8
+  , findFileUtf8
+  ) where
+
+import Prelude (Unit(), ($))
+
+import Control.Monad.Aff (Aff(), makeAff)
+import Control.Monad.Eff (Eff())
+import Control.Monad.Eff.Exception (Error())
+
+import Data.Maybe (Maybe(..))
+import Data.String.Regex (Regex())
+
+import Data.Function
+
+foreign import data FS :: !
+
+writeFileUtf8 :: forall eff. String -> String -> Aff (fs :: FS | eff) Unit
+writeFileUtf8 filepath contents = makeAff $ runFn4 writeFileUtf8Fn filepath contents
+
+foreign import writeFileUtf8Fn :: forall eff. Fn4 String
+                                                  String
+                                                  (Error -> Eff (fs :: FS | eff) Unit)
+                                                  (Unit -> Eff (fs :: FS | eff) Unit)
+                                                  (Eff (fs :: FS | eff) Unit)
+
+findFileUtf8 :: forall eff. Regex -> Array String -> Aff (fs :: FS | eff) (Maybe String)
+findFileUtf8 regexp filepaths = makeAff $ runFn6 findFileUtf8Fn Nothing Just regexp filepaths
+
+foreign import findFileUtf8Fn :: forall eff. Fn6 (Maybe String)
+                                                 (String -> Maybe String)
+                                                 Regex
+                                                 (Array String)
+                                                 (Error -> Eff (fs :: FS | eff) Unit)
+                                                 (Maybe String -> Eff (fs :: FS | eff) Unit)
+                                                 (Eff (fs :: FS | eff) Unit)
diff --git a/src/PursLoader/Glob.js b/src/PursLoader/Glob.js
new file mode 100644
index 0000000..960ae9a
--- /dev/null
+++ b/src/PursLoader/Glob.js
@@ -0,0 +1,18 @@
+'use strict';
+
+// module PursLoader.Glob
+
+var glob = require('glob');
+
+var async = require('async');
+
+function globAllFn(patterns, errback, callback) {
+  return function(){
+    async.map(patterns, glob, function(error, result){
+      if (error) errback(new Error(error))();
+      else callback(result)();
+    });
+  };
+}
+
+exports.globAllFn = globAllFn;
diff --git a/src/PursLoader/Glob.purs b/src/PursLoader/Glob.purs
new file mode 100644
index 0000000..45eeb56
--- /dev/null
+++ b/src/PursLoader/Glob.purs
@@ -0,0 +1,22 @@
+module PursLoader.Glob
+  ( Glob()
+  , globAll
+  ) where
+
+import Prelude (Unit(), ($))
+
+import Control.Monad.Aff (Aff(), makeAff)
+import Control.Monad.Eff (Eff())
+import Control.Monad.Eff.Exception (Error())
+
+import Data.Function
+
+foreign import data Glob :: !
+
+globAll :: forall eff. Array String -> Aff (glob :: Glob | eff) (Array (Array String))
+globAll patterns = makeAff $ runFn3 globAllFn patterns
+
+foreign import globAllFn :: forall eff. Fn3 (Array String)
+                                            (Error -> Eff (glob :: Glob | eff) Unit)
+                                            ((Array (Array String)) -> Eff (glob :: Glob | eff) Unit)
+                                            (Eff (glob :: Glob | eff) Unit)
diff --git a/src/PursLoader/Loader.js b/src/PursLoader/Loader.js
new file mode 100644
index 0000000..98459b6
--- /dev/null
+++ b/src/PursLoader/Loader.js
@@ -0,0 +1,19 @@
+'use strict'
+
+// module PursLoader.Loader
+
+var path = require('path');
+
+var cwd = process.cwd();
+
+function relative(from) {
+  return function(to){
+    return path.relative(from, to);
+  };
+}
+
+exports.cwd = cwd;
+
+exports.relative = relative;
+
+exports.resolve = path.resolve;
diff --git a/src/Loader.purs b/src/PursLoader/Loader.purs
index e9e03c4..3cb99cd 100644
--- a/src/Loader.purs
+++ b/src/PursLoader/Loader.purs
@@ -4,6 +4,8 @@ module PursLoader.Loader
   , loaderFn
   ) where
 
+import Prelude (Unit(), ($), (<>), (>>=), (<$>), (++), bind, flip, id, pure, return, unit)
+
 import Control.Monad.Aff (Aff(), runAff)
 import Control.Monad.Eff (Eff())
 import Control.Monad.Eff.Class (liftEff)
@@ -14,6 +16,7 @@ import Data.Function (Fn2(), mkFn2)
 import Data.Maybe (Maybe(..), fromMaybe, maybe)
 import Data.String (joinWith)
 import Data.String.Regex (match, noFlags, regex, test)
+import Data.Traversable (sequence)
 
 import PursLoader.ChildProcess (ChildProcess(), spawn)
 import PursLoader.FS (FS(), writeFileUtf8, findFileUtf8)
@@ -36,18 +39,13 @@ psciFilename = ".psci"
 
 (!!!) = flip (!!)
 
-foreign import cwd "var cwd = process.cwd();" :: String
+foreign import cwd :: String
+
+foreign import relative :: String -> String -> String
 
-foreign import relative """
-function relative(from) {
-  return function(to){
-    var path = require('path');
-    return path.relative(from, to);
-  };
-}
-""" :: String -> String -> String
+foreign import resolve :: String -> String
 
-mkPsci :: [[String]] -> [[String]] -> String
+mkPsci :: Array (Array String) -> Array (Array String) -> String
 mkPsci srcs ffis = joinWith "\n" ((loadModule <$> concat srcs) <> (loadForeign <$> concat ffis))
   where
     loadModule :: String -> String
@@ -56,7 +54,7 @@ mkPsci srcs ffis = joinWith "\n" ((loadModule <$> concat srcs) <> (loadForeign <
     loadForeign :: String -> String
     loadForeign a = ":f " ++ relative cwd a
 
-findFFI :: forall eff. [[String]] -> String -> Aff (fs :: FS | eff) (Maybe String)
+findFFI :: forall eff. Array (Array String) -> String -> Aff (fs :: FS | eff) (Maybe String)
 findFFI ffiss name = findFileUtf8 re (concat ffiss)
   where
     re = regex ("(?:^|\\n)//\\s*module\\s*" ++ name ++ "\\s*\\n") noFlags
@@ -79,12 +77,13 @@ loader' ref source = do
 
   writeFileUtf8 psciFilename psciFile
 
-  let moduleName = match moduleRegex source >>= (!!!) 1
+  let moduleName = match moduleRegex source >>= (!!!) 1 >>= id
       hasForeign = test foreignRegex source
       result = (\a -> "module.exports = require('" ++ a ++ "');") <$> moduleName
 
   liftEff (clearDependencies ref)
   liftEff (addDependency ref (resourcePath ref))
+  liftEff (sequence $ (\src -> addDependency ref (resolve src)) <$> concat srcss)
 
   foreignPath <- if hasForeign
                     then fromMaybe (pure Nothing) (findFFI ffiss <$> moduleName)
diff --git a/src/PursLoader/LoaderRef.js b/src/PursLoader/LoaderRef.js
new file mode 100644
index 0000000..3ce0970
--- /dev/null
+++ b/src/PursLoader/LoaderRef.js
@@ -0,0 +1,56 @@
+'use strict';
+
+// module PursLoader.LoaderRef
+
+function asyncFn(isJust, fromMaybe, ref){
+  return function(){
+    var callback = ref.async();
+    return function(error){
+      return function(value){
+        return function(){
+          return isJust(error) ? callback(fromMaybe(new Error())(error))
+                               : callback(null, value);
+        };
+      };
+    };
+  };
+}
+function cacheable(ref){
+  return function(){
+    return ref.cacheable && ref.cacheable();
+  };
+}
+
+function query(ref){
+  return ref.query;
+}
+
+function clearDependencies(ref){
+  return function(){
+    return ref.clearDependencies();
+  };
+}
+
+function resourcePath(ref){
+  return ref.resourcePath;
+}
+
+function addDependency(ref){
+  return function(dep){
+    return function(){
+      return ref.addDependency(dep);
+    };
+  };
+}
+
+exports.asyncFn = asyncFn;
+
+exports.cacheable = cacheable;
+
+exports.query = query;
+
+exports.clearDependencies = clearDependencies;
+
+exports.resourcePath = resourcePath;
+
+exports.addDependency = addDependency;
diff --git a/src/PursLoader/LoaderRef.purs b/src/PursLoader/LoaderRef.purs
new file mode 100644
index 0000000..33c4f7e
--- /dev/null
+++ b/src/PursLoader/LoaderRef.purs
@@ -0,0 +1,40 @@
+module PursLoader.LoaderRef
+  ( LoaderRef()
+  , Loader()
+  , async
+  , cacheable
+  , query
+  , clearDependencies
+  , addDependency
+  , resourcePath
+  ) where
+
+import Prelude (Unit())
+
+import Control.Monad.Eff (Eff())
+import Control.Monad.Eff.Exception (Error())
+
+import Data.Function (Fn3(), runFn3)
+import Data.Maybe (Maybe(), fromMaybe, isJust)
+
+data LoaderRef
+
+foreign import data Loader :: !
+
+foreign import asyncFn :: forall eff a. Fn3 (Maybe Error -> Boolean)
+                                            (Error -> Maybe Error -> Error)
+                                            LoaderRef
+                                            (Eff (loader :: Loader | eff) (Maybe Error -> a -> Eff (loader :: Loader | eff) Unit))
+
+async :: forall eff a. LoaderRef -> Eff (loader :: Loader | eff) (Maybe Error -> a -> Eff (loader :: Loader | eff) Unit)
+async ref = runFn3 asyncFn isJust fromMaybe ref
+
+foreign import cacheable :: forall eff. LoaderRef -> Eff (loader :: Loader | eff) Unit
+
+foreign import query :: LoaderRef -> String
+
+foreign import clearDependencies :: forall eff. LoaderRef -> Eff (loader :: Loader | eff) Unit
+
+foreign import resourcePath :: LoaderRef -> String
+
+foreign import addDependency :: forall eff. LoaderRef -> String -> Eff (loader :: Loader | eff) Unit
diff --git a/src/PursLoader/LoaderUtil.js b/src/PursLoader/LoaderUtil.js
new file mode 100644
index 0000000..45f2703
--- /dev/null
+++ b/src/PursLoader/LoaderUtil.js
@@ -0,0 +1,7 @@
+'use strict';
+
+// module PursLoader.LoaderUtil
+
+var loaderUtils = require('loader-utils');
+
+exports.parseQuery = loaderUtils.parseQuery;
diff --git a/src/PursLoader/LoaderUtil.purs b/src/PursLoader/LoaderUtil.purs
new file mode 100644
index 0000000..3e5a7bc
--- /dev/null
+++ b/src/PursLoader/LoaderUtil.purs
@@ -0,0 +1,9 @@
+module PursLoader.LoaderUtil
+  ( parseQuery
+  ) where
+
+import Data.Foreign (Foreign())
+
+import PursLoader.LoaderRef (LoaderRef())
+
+foreign import parseQuery :: String -> Foreign
diff --git a/src/Options.purs b/src/PursLoader/Options.purs
index 51e9be5..e3957eb 100644
--- a/src/Options.purs
+++ b/src/PursLoader/Options.purs
@@ -4,6 +4,8 @@ module PursLoader.Options
   , loaderFFIOption
   ) where
 
+import Prelude (Unit(), (<>), (<$>), (<<<), (++), (<*>), const)
+
 import Data.Array (concat)
 import Data.Either (either)
 
@@ -45,8 +47,8 @@ newtype Options
             , output :: NullOrUndefined String
             , noPrefix :: NullOrUndefined Boolean
             , requirePath :: NullOrUndefined String
-            , src :: NullOrUndefined [String]
-            , ffi :: NullOrUndefined [String]
+            , src :: NullOrUndefined (Array String)
+            , ffi :: NullOrUndefined (Array String)
             }
 
 instance isForeignOptions :: IsForeign Options where
@@ -74,7 +76,7 @@ instance isForeignOptions :: IsForeign Options where
                             <*> readProp ffiOpt obj)
 
 class LoaderOption a where
-  opt :: String -> NullOrUndefined a -> [String]
+  opt :: String -> NullOrUndefined a -> Array String
 
 instance booleanLoaderOption :: LoaderOption Boolean where
   opt key val = maybe [] (\a -> if a then ["--" ++ key] else []) (runNullOrUndefined val)
@@ -82,11 +84,11 @@ instance booleanLoaderOption :: LoaderOption Boolean where
 instance stringLoaderOption :: LoaderOption String where
   opt key val = maybe [] (\a -> ["--" ++ key ++ "=" ++ a]) (runNullOrUndefined val)
 
-instance arrayLoaderOption :: (LoaderOption a) => LoaderOption [a] where
+instance arrayLoaderOption :: (LoaderOption a) => LoaderOption (Array a) where
   opt key val = concat (opt key <$> (NullOrUndefined <<< Just)
                                 <$> (fromMaybe [] (runNullOrUndefined val)))
 
-pscOptions :: Foreign -> [String]
+pscOptions :: Foreign -> Array String
 pscOptions query = either (const []) fold parsed
   where parsed = read query :: F Options
         fold (Options a) = opt noPreludeOpt a.noPrelude <>
@@ -100,8 +102,8 @@ pscOptions query = either (const []) fold parsed
                            opt requirePathOpt a.requirePath <>
                            opt ffiOpt a.ffi
 
-loaderSrcOption :: Foreign -> Maybe [String]
+loaderSrcOption :: Foreign -> Maybe (Array String)
 loaderSrcOption query = either (const Nothing) (\(Options a) -> runNullOrUndefined a.src) (read query)
 
-loaderFFIOption :: Foreign -> Maybe [String]
+loaderFFIOption :: Foreign -> Maybe (Array String)
 loaderFFIOption query = either (const Nothing) (\(Options a) -> runNullOrUndefined a.ffi) (read query)