Optimize anki note field generation (#611)

1 files changed, 13 insertions, 3 deletions

diff --git a/ext/bg/js/anki-note-builder.js b/ext/bg/js/anki-note-builder.js
index 31e67394..7fe8962a 100644
--- a/ext/bg/js/anki-note-builder.js
+++ b/ext/bg/js/anki-note-builder.js
@@ -28,8 +28,9 @@ class AnkiNoteBuilder {
         const modeOptions = isKanji ? options.anki.kanji : options.anki.terms;
         const modeOptionsFieldEntries = Object.entries(modeOptions.fields);
 
+        const fields = {};
         const note = {
-            fields: {},
+            fields,
             tags,
             deckName: modeOptions.deck,
             modelName: modeOptions.model,
@@ -38,8 +39,17 @@ class AnkiNoteBuilder {
             }
         };
 
-        for (const [fieldName, fieldValue] of modeOptionsFieldEntries) {
-            note.fields[fieldName] = await this.formatField(fieldValue, definition, mode, context, options, templates, null);
+        const formattedFieldValuePromises = [];
+        for (const [, fieldValue] of modeOptionsFieldEntries) {
+            const formattedFieldValuePromise = this.formatField(fieldValue, definition, mode, context, options, templates, null);
+            formattedFieldValuePromises.push(formattedFieldValuePromise);
+        }
+
+        const formattedFieldValues = await Promise.all(formattedFieldValuePromises);
+        for (let i = 0, ii = modeOptionsFieldEntries.length; i < ii; ++i) {
+            const fieldName = modeOptionsFieldEntries[i][0];
+            const formattedFieldValue = formattedFieldValues[i];
+            fields[fieldName] = formattedFieldValue;
         }
 
         return note;