8 files changed, 14 insertions, 42 deletions
diff --git a/ext/bg/background.html b/ext/bg/background.html
index 61bc17a0..7d352561 100644
--- a/ext/bg/background.html
+++ b/ext/bg/background.html
@@ -14,6 +14,7 @@
         <script src="/bg/js/handlebars.js"></script>
         <script src="/bg/js/dictionary.js"></script>
         <script src="/mixed/js/japanese.js"></script>
+        <script src="/mixed/js/request.js"></script>
         <script src="/bg/js/options.js"></script>
         <script src="/bg/js/anki-connect.js"></script>
         <script src="/bg/js/anki-null.js"></script>
diff --git a/ext/bg/js/anki-connect.js b/ext/bg/js/anki-connect.js
index a4d8ba3f..567e8d3f 100644
--- a/ext/bg/js/anki-connect.js
+++ b/ext/bg/js/anki-connect.js
@@ -64,6 +64,6 @@ class AnkiConnect {
     }
 
     ankiInvoke(action, params) {
-        return jsonRequest(this.server, 'POST', {action, params, version: this.localVersion});
+        return requestJson(this.server, 'POST', {action, params, version: this.localVersion});
     }
 }
diff --git a/ext/bg/js/translator.js b/ext/bg/js/translator.js
index 9232e529..1be485c7 100644
--- a/ext/bg/js/translator.js
+++ b/ext/bg/js/translator.js
@@ -31,7 +31,7 @@ class Translator {
 
         if (!this.deinflector) {
             const url = chrome.extension.getURL('/bg/lang/deinflect.json');
-            const reasons = await jsonRequest(url, 'GET');
+            const reasons = await requestJson(url, 'GET');
             this.deinflector = new Deinflector(reasons);
         }
     }
diff --git a/ext/bg/js/util.js b/ext/bg/js/util.js
index 6e86c2a6..c7ebbb0e 100644
--- a/ext/bg/js/util.js
+++ b/ext/bg/js/util.js
@@ -18,19 +18,6 @@
 
 
 /*
- * Promise
- */
-
-function promiseCallback(promise, callback) {
-    return promise.then(result => {
-        callback({result});
-    }).catch(error => {
-        callback({error});
-    });
-}
-
-
-/*
  * Commands
  */
 
@@ -71,30 +58,3 @@ function fgBroadcast(action, params) {
 function fgOptionsSet(options) {
     fgBroadcast('optionsSet', options);
 }
-
-
-/*
- * JSON
- */
-
-function jsonRequest(url, action, params) {
-    return new Promise((resolve, reject) => {
-        const xhr = new XMLHttpRequest();
-        xhr.overrideMimeType('application/json');
-        xhr.addEventListener('load', () => resolve(xhr.responseText));
-        xhr.addEventListener('error', () => reject('failed to execute network request'));
-        xhr.open(action, url);
-        if (params) {
-            xhr.send(JSON.stringify(params));
-        } else {
-            xhr.send();
-        }
-    }).then(responseText => {
-        try {
-            return JSON.parse(responseText);
-        }
-        catch (e) {
-            return Promise.reject('invalid JSON response');
-        }
-    });
-}
diff --git a/ext/bg/js/yomichan.js b/ext/bg/js/yomichan.js
index acc560ce..eb083396 100644
--- a/ext/bg/js/yomichan.js
+++ b/ext/bg/js/yomichan.js
@@ -195,6 +195,14 @@ window.yomichan = new class {
     }
 
     onMessage({action, params}, sender, callback) {
+        const promiseCallback = (promise, callback) => {
+            return promise.then(result => {
+                callback({result});
+            }).catch(error => {
+                callback({error});
+            });
+        };
+
         const handlers = {
             optionsGet: ({callback}) => {
                 promiseCallback(optionsLoad(), callback);
diff --git a/ext/bg/popup.html b/ext/bg/popup.html
index db9097bd..b3d38533 100644
--- a/ext/bg/popup.html
+++ b/ext/bg/popup.html
@@ -32,6 +32,7 @@
         <script src="/mixed/lib/handlebars.min.js"></script>
         <script src="/bg/js/util.js"></script>
         <script src="/bg/js/dictionary.js"></script>
+        <script src="/mixed/js/request.js"></script>
         <script src="/mixed/js/japanese.js"></script>
         <script src="/bg/js/options.js"></script>
         <script src="/bg/js/popup.js"></script>
diff --git a/ext/bg/search.html b/ext/bg/search.html
index b30b8910..45603f17 100644
--- a/ext/bg/search.html
+++ b/ext/bg/search.html
@@ -35,6 +35,7 @@
         <script src="/mixed/lib/jquery.min.js"></script>
         <script src="/bg/js/util.js"></script>
         <script src="/bg/js/dictionary.js"></script>
+        <script src="/mixed/js/request.js"></script>
         <script src="/mixed/js/japanese.js"></script>
         <script src="/mixed/js/audio.js"></script>
         <script src="/mixed/js/display.js"></script>
diff --git a/ext/bg/settings.html b/ext/bg/settings.html
index 9b21b4d8..4c7198c3 100644
--- a/ext/bg/settings.html
+++ b/ext/bg/settings.html
@@ -280,6 +280,7 @@
         <script src="/bg/js/handlebars.js"></script>
         <script src="/bg/js/dictionary.js"></script>
         <script src="/mixed/js/japanese.js"></script>
+        <script src="/mixed/js/request.js"></script>
         <script src="/bg/js/options.js"></script>
         <script src="/bg/js/settings.js"></script>
     </body>