Cytoscape: export image to Blob

types/cytoscape/cytoscape-tests.ts

@@ -343,17 +343,29 @@ const positions = oneOf({a: {x: 100, y: 100}}, (node: cytoscape.NodeCollection):
 
 // TODO: cy.style
 
+// $ExpectType String
 cy.png({
-  output: oneOf('base64uri', 'base64', 'blob', undefined),
+  output: oneOf('base64uri', 'base64', undefined),
   bg: oneOf('#ffffff', undefined),
   full: true,
   scale: 2,
   maxWidth: 100,
   maxHeight: 100
 });
+// $ExpectType Blob
+cy.png({
+  output: 'blob',
+  bg: oneOf('#ffffff', undefined),
+  full: true,
+  scale: 2,
+  maxWidth: 100,
+  maxHeight: 100
+});
+
 aliases(cy.jpg, cy.jpeg);
+// $ExpectType String
 cy.jpg({
-  output: oneOf('base64uri', 'base64', 'blob', undefined),
+  output: oneOf('base64uri', 'base64', undefined),
   bg: oneOf('#ffffff', undefined),
   full: true,
   scale: 2,
@@ -361,6 +373,17 @@ cy.jpg({
   maxHeight: 100,
   quality: 0.5
 });
+// $ExpectType Blob
+cy.jpg({
+  output: 'blob',
+  bg: oneOf('#ffffff', undefined),
+  full: true,
+  scale: 2,
+  maxWidth: 100,
+  maxHeight: 100,
+  quality: 0.5
+});
+
 cy.json(cy.json());
 
 // Types possible to call methods

types/cytoscape/index.d.ts

@@ -1052,10 +1052,6 @@ declare namespace cytoscape {
      * http://js.cytoscape.org/#core/export
      */
     interface ExportOptions {
-        /**
-         * output Whether the output should be 'base64uri' (default), 'base64', or 'blob'.
-         */
-        output?: "base64uri" | "base64" | "blob";
         /**
          * The background colour of the image (transparent by default).
          */
@@ -1077,6 +1073,18 @@ declare namespace cytoscape {
          */
         maxHeight?: number;
     }
+    interface ExportStringOptions extends ExportOptions {
+        /**
+         * output Whether the output should be 'base64uri' (default), 'base64', or 'blob'.
+         */
+        output?: "base64uri" | "base64";
+    }
+    interface ExportBlobOptions extends ExportOptions {
+        /**
+         * output Whether the output should be 'base64uri' (default), 'base64', or 'blob'.
+         */
+        output?: "blob";
+    }
 
     interface ExportJpgOptions extends ExportOptions {
         /**
@@ -1086,22 +1094,29 @@ declare namespace cytoscape {
          */
         quality?: number;
     }
+    interface ExportJpgStringOptions extends ExportJpgOptions, ExportStringOptions {
+    }
+    interface ExportJpgBlobOptions extends ExportJpgOptions, ExportBlobOptions {
+    }
 
     interface CoreExport {
         /**
          * Export the current graph view as a PNG image in Base64 representation.
          */
-        png(options?: ExportOptions): string;
+        png(options?: ExportStringOptions): string;
+        png(options?: ExportBlobOptions): Blob;
 
         /**
          * Export the current graph view as a JPG image in Base64 representation.
          */
-        jpg(options?: ExportJpgOptions): string;
+        jpg(options?: ExportJpgStringOptions): string;
+        jpg(options?: ExportJpgBlobOptions): Blob;
 
         /**
          * Export the current graph view as a JPG image in Base64 representation.
          */
-        jpeg(options?: ExportJpgOptions): string;
+        jpeg(options?: ExportJpgStringOptions): string;
+        jpeg(options?: ExportJpgBlobOptions): Blob;
 
         /**
          * Export the graph as JSON, the same format used at initialisation.