maximum call stack exceeded when no width and height is sent

Author: andreivinaga

index.js

@@ -2,6 +2,13 @@
 const { gcd, highestFirst, formatAspectRatio } = require('./utils')
 
 module.exports = (height, width, seperator = ':') => {
+  if (!height) {
+    throw new Error(`Invalid height: ${height}`);
+  }
+
+  if (!width) {
+    throw new Error(`Invalid width: ${width}`);
+  }
   const [h, w] = highestFirst(height, width)
   const divisor = gcd(h, w)
   return formatAspectRatio(h, w, divisor, seperator)