Fix override check (#692)

babel · Sep 27, 2018 · 2ce62c7 · 2ce62c7
1 parent 800181b
commit 2ce62c7
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/index.js b/src/index.js
@@ -76,7 +76,7 @@ async function loader(source, inputSourceMap, overrides) {
     let override = require(loaderOptions.customize);
     if (override.__esModule) override = override.default;
 
-    if (typeof override === "function") {
+    if (typeof override !== "function") {
       throw new Error("Custom overrides must be functions.");
     }
     overrides = override(babel);