Merge branch 'master' into fix-lineheight

Author: HackbrettXXX

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;

types/index.d.ts

@@ -844,7 +844,8 @@ declare module "jspdf" {
       ry: number,
       style?: string | null
     ): jsPDF;
-    save(filename?: string, options?: { returnPromise?: boolean }): jsPDF;
+    save(filename: string, options: { returnPromise: true }): Promise<void>;
+    save(filename?: string): jsPDF;
     saveGraphicsState(): jsPDF;
     setCharSpace(charSpace: number): jsPDF;
     setCreationDate(date?: Date | string): jsPDF;