Default jest environment to jsdom in jest configuration

doc/2021-10-18-UpgradingRails.md

@@ -36,7 +36,7 @@
 
 - add esbuild gem 'jsbundling-rails'.  Unified installer for webpacker rollup and esbuild
   - `bin/bundle install`
-  - `bin/rails javascript:install:esbuild
+  - `bin/rails javascript:install:esbuild`
 - clear the tmp directory to make sure asset compilation with esbuild does not complain about missing file templates
   - bundle exec rake tmp:clear
 - move javascript files to new location

package.json

@@ -12,7 +12,7 @@
   },
   "scripts": {
     "build": "esbuild app/javascript/*.* --bundle --outdir=app/assets/builds",
-    "test": "jest --env=jsdom"
+    "test": "jest"
   },
   "devDependencies": {
     "jest": "^27.2.5"
@@ -24,6 +24,7 @@
     "moduleDirectories": [
       "node_modules",
       "app/javascript"
-    ]
+    ],
+    "testEnvironment": "jsdom"
   }
 }