refactor: refactor assertString fn (#1454)

validatorjs · Nov 15, 2020 · a19ebff · a19ebff
1 parent 03b60e2
commit a19ebff
Showing 1 changed file with 6 additions and 13 deletions.
diff --git a/src/lib/util/assertString.js b/src/lib/util/assertString.js
@@ -1,18 +1,11 @@
 export default function assertString(input) {
-  const isString = (typeof input === 'string' || input instanceof String);
+  const isString = typeof input === 'string' || input instanceof String;
 
   if (!isString) {
-    let invalidType;
-    if (input === null) {
-      invalidType = 'null';
-    } else {
-      invalidType = typeof input;
-      if (invalidType === 'object' && input.constructor && input.constructor.hasOwnProperty('name')) {
-        invalidType = input.constructor.name;
-      } else {
-        invalidType = `a ${invalidType}`;
-      }
-    }
-    throw new TypeError(`Expected string but received ${invalidType}.`);
+    let invalidType = typeof input;
+    if (input === null) invalidType = 'null';
+    else if (invalidType === 'object') invalidType = input.constructor.name;
+
+    throw new TypeError(`Expected a string but received a ${invalidType}`);
   }
 }