From 9dc656d5a22f7cd7739fc3d36b804aa1577b5d5a Mon Sep 17 00:00:00 2001
From: Jean-Patrick Guerrero <jeanpatrick.guerrero@gmail.com>
Date: Thu, 21 Mar 2019 00:21:11 +0100
Subject: [PATCH] Fix broken assert()

---
 init.lua | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/init.lua b/init.lua
index 263c043..cd85f77 100644
--- a/init.lua
+++ b/init.lua
@@ -124,6 +124,14 @@ local function is_str(x)
 	return type(x) == "string"
 end
 
+local function is_num(x)
+	return type(x) == "number"
+end
+
+local function is_table(x)
+	return type(x) == "table"
+end
+
 local function is_func(x)
 	return type(x) == "function"
 end
@@ -142,9 +150,9 @@ end
 function craftguide.register_craft(def)
 	local func = "craftguide." .. __func() .. "(): "
 	assert(is_str(def.type), func .. "'type' field missing")
-	assert(is_str(def.width), func .. "'width' field missing")
+	assert(is_num(def.width), func .. "'width' field missing")
 	assert(is_str(def.output), func .. "'output' field missing")
-	assert(is_str(def.items), func .. "'items' field missing")
+	assert(is_table(def.items), func .. "'items' field missing")
 
 	custom_crafts[#custom_crafts + 1] = def
 end