From f8bdf866653cb14450ad896cd9b6bdff761740c5 Mon Sep 17 00:00:00 2001
From: Matei Adriel <rafaeladriel11@gmail.com>
Date: Thu, 9 Jul 2020 18:52:12 +0300
Subject: [PATCH] feat: an error for passing null to a function

---
 src/Data/Dataflow/Expression/Lint.purs | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/Data/Dataflow/Expression/Lint.purs b/src/Data/Dataflow/Expression/Lint.purs
index 554092a..9af963a 100644
--- a/src/Data/Dataflow/Expression/Lint.purs
+++ b/src/Data/Dataflow/Expression/Lint.purs
@@ -6,6 +6,7 @@ import Lunarbox.Data.Dataflow.Expression (Expression(..), VarName, foldExpressio
 
 data LintError l
   = UnusedDeclaration VarName l
+  | UnsaturatedFunction l l
 
 -- | Collect linting errors inside an expression
 lint :: forall l. Expression l -> Array (LintError l)
@@ -16,6 +17,10 @@ lint = foldExpression go
       [ UnusedDeclaration name location
       ]
 
+  go (FunctionCall location _ (TypedHole argLocation)) =
+    [ UnsaturatedFunction location argLocation
+    ]
+
   go a = []
 
 -- | Get all the places a variable is referenced in