From bd1cf8888f4b85e8f56517aa218f1ed0ac799ce1 Mon Sep 17 00:00:00 2001
From: Jaco Greeff <jacogr@gmail.com>
Date: Wed, 17 Jun 2020 16:24:58 +0200
Subject: [PATCH] Don't reload i18n when cached (#2973)

---
 packages/page-settings/src/I18n/index.tsx | 15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

diff --git a/packages/page-settings/src/I18n/index.tsx b/packages/page-settings/src/I18n/index.tsx
index 7d17781711..2019462bef 100644
--- a/packages/page-settings/src/I18n/index.tsx
+++ b/packages/page-settings/src/I18n/index.tsx
@@ -33,10 +33,19 @@ type Progress = [[number, number, number], Record<string, [number, number, numbe
 type Strings = Record<string, string>;
 type StringsMod = Record<string, Strings>;
 
-async function retrieveJson (url: string): Promise<any> {
-  const response = await fetch(`locales/${url}`);
+const cache = new Map<string, unknown>();
 
-  return response.json();
+async function retrieveJson (url: string): Promise<any> {
+  if (cache.has(url)) {
+    return cache.get(url);
+  }
+
+  const response = await fetch(`locales/${url}`);
+  const json = await response.json() as unknown;
+
+  cache.set(url, json);
+
+  return json;
 }
 
 async function retrieveEnglish (): Promise<StringsMod> {