From 8ba2eaa3e5214653b92112774d0b5ad0bad108f8 Mon Sep 17 00:00:00 2001
From: Franklin Tarter <franklintarter@gmail.com>
Date: Mon, 14 Oct 2019 21:43:50 -0700
Subject: [PATCH] helpful error message when defaultClass props forgotten

---
 package.json | 2 +-
 src/index.js | 5 +++++
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/package.json b/package.json
index 9c498a7..2a283cc 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "tailwindcss-overload",
-  "version": "0.0.2",
+  "version": "0.0.3",
   "description": "tailwindcss-overload",
   "main": "lib/index.js",
   "module": "es/index.js",
diff --git a/src/index.js b/src/index.js
index 65084da..cacb1e4 100644
--- a/src/index.js
+++ b/src/index.js
@@ -13,6 +13,11 @@ export const overloadTailwind = (initialClasses, overloadClasses) => {
 
 export const withTailwindOverload = PassedComponent => {
   return ({ className, ...rest }) => {
+    if (!PassedComponent.defaultClassName) {
+      throw new Error(
+        "No defaultClassName found. Components wrapped withTailwindOverload() require defaultClassName property 'MyComponent.defaultClassname = \"text-gray-500\"'"
+      );
+    }
     const overloadedClasses = overloadTailwind(
       PassedComponent.defaultClassName,
       className