diff --git a/src/kiss/Kiss.hx b/src/kiss/Kiss.hx
index 496b0dc..5977941 100644
--- a/src/kiss/Kiss.hx
+++ b/src/kiss/Kiss.hx
@@ -60,6 +60,7 @@ class Kiss {
                 "pairs" => Symbol("Prelude.pairs"), // TODO test pairs
                 "reversed" => Symbol("Prelude.reversed"), // TODO test reversed
                 "memoize" => Symbol("Prelude.memoize"), // TODO test memoize
+                "joinPath" => Symbol("Prelude.joinPath"),
                 "symbolName" => Symbol("Prelude.symbolName"),
                 "symbolNameValue" => Symbol("Prelude.symbolNameValue"),
                 "symbol" => Symbol("Prelude.symbol"),
diff --git a/src/kiss/Prelude.hx b/src/kiss/Prelude.hx
index 963d702..8e316eb 100644
--- a/src/kiss/Prelude.hx
+++ b/src/kiss/Prelude.hx
@@ -12,6 +12,7 @@ import js.node.Buffer;
 import sys.io.Process;
 #end
 import uuid.Uuid;
+import haxe.io.Path;
 
 using StringTools;
 using uuid.Uuid;
@@ -239,7 +240,7 @@ class Prelude {
 
     // Ranges with a min, exclusive max, and step size, just like Python.
     public static function range(min, max, step):Iterator<Int> {
-        if (step <= 0)
+        if (step <= 0 || max < min)
             throw "(range...) can only count up";
         var count = min;
         return {
@@ -254,6 +255,12 @@ class Prelude {
         };
     }
 
+    static function _joinPath(parts:Array<Dynamic>) {
+        return Path.join([for (part in parts) cast(part, String)]);
+    }
+
+    public static var joinPath:Function = Reflect.makeVarArgs(_joinPath);
+
     public static dynamic function truthy<T>(v:T) {
         return switch (Type.typeof(v)) {
             case TNull: false;