build: add support for older chrome versions

.browserslistrc

@@ -0,0 +1,17 @@
+# This file is used by the build system to adjust CSS and JS output to support the specified browsers below.
+# For additional information regarding the format and rule options, please see:
+# https://github.com/browserslist/browserslist#queries
+
+# For the full list of supported browsers by the Angular framework, please see:
+# https://angular.dev/reference/versions#browser-support
+
+# You can see what browsers were selected by your queries by running:
+#   npx browserslist
+
+Chrome 83
+last 2 Chrome versions
+last 1 Firefox version
+last 2 Edge major versions
+last 2 Safari major versions
+last 2 iOS major versions
+Firefox ESR

package.json

@@ -10,17 +10,6 @@
     "type": "git",
     "url": "git://github.com/johannesjo/super-productivity.git"
   },
-  "browserslist": {
-    "development": [
-      "defaults and fully supports es6-module"
-    ],
-    "production": [
-      "defaults and fully supports es6-module"
-    ],
-    "modern": [
-      "defaults and fully supports es6-module"
-    ]
-  },
   "keywords": [
     "ToDo",
     "Task Management",