Ran npm run prettier to reformat code. (#3141)

Co-authored-by: Lukas Holländer <[email protected]>

Author: andrewcmyers

src/jspdf.js

@@ -3228,7 +3228,11 @@ function jsPDF(options) {
       scaleFactor = 6;
       break;
     default:
-      throw new Error("Invalid unit: " + unit);
+      if (typeof unit === "number") {
+        scaleFactor = unit;
+      } else {
+        throw new Error("Invalid unit: " + unit);
+      }
   }
 
   var encryption = null;