Data between server and client is now exchanged using the fetch API. #25

src/datasets.js

 /*global ks_global*/
 
-import jQuery from "jquery";
-
 /**
  * Returns the json object from the stored graph as promise.
  *
@@ -10,18 +8,18 @@ import jQuery from "jquery";
  * @returns Promise returning graph object.
  */
 export function loadGraphJson(spaceId) {
-    let payload = {
-        action: "get_space",
-        space: spaceId,
+    const data = new FormData();
+    data.append("action", "get_space");
+    data.append("space", spaceId);
+
+    let opts = {
+        method: "POST",
+        body: data,
     };
 
-    return jQuery
-        .ajax({
-            type: "POST",
-            url: ks_global.ajax_url,
-            data: payload,
-        })
-        .then((data) => JSON.parse(data));
+    return fetch(ks_global.ajax_url, opts).then(function (response) {
+        return response.json();
+    });
 }
 
 /**
@@ -33,16 +31,18 @@ export function loadGraphJson(spaceId) {
  * @returns Promise returning state of query.
  */
 export function saveGraphJson(spaceId, json) {
-    let payload = {
-        action: "update_space",
-        graph: JSON.stringify(json),
-        space: spaceId,
+    const data = new FormData();
+    data.append("action", "update_space");
+    data.append("space", spaceId);
+    data.append("graph", JSON.stringify(json));
+
+    let opts = {
+        method: "POST",
+        body: data,
     };
 
-    return jQuery.ajax({
-        type: "POST",
-        url: ks_global.ajax_url,
-        data: payload,
+    return fetch(ks_global.ajax_url, opts).then(function (response) {
+        return response.json();
     });
 }
 
@@ -52,15 +52,17 @@ export function saveGraphJson(spaceId, json) {
  * @returns A promise containing an array containing all available space ids.
  */
 export function listAllSpaces() {
-    let payload = {
-        action: "list_spaces",
+    const data = new FormData();
+    data.append("action", "list_spaces");
+
+    let opts = {
+        method: "POST",
+        body: data,
     };
 
-    return jQuery
-        .ajax({
-            type: "POST",
-            url: ks_global.ajax_url,
-            data: payload,
+    return fetch(ks_global.ajax_url, opts)
+        .then(function (response) {
+            return response.json();
         })
-        .then((data) => JSON.parse(data)["spaces"]);
+        .then((data) => data.spaces);
 }