move jest environment to base .eslintrc.js file

.eslintrc.js

@@ -28,7 +28,15 @@ module.exports = {
         "no-console": "off",
         "no-process-exit": "off",
       }
-    }
+    },
+    {
+      files: [
+        'tests/**/*.js',
+      ],
+      env: {
+        jest: true,
+      }
+    },
   ],
   plugins: [
     "node",

tests/.eslintrc

@@ -1,2 +0,0 @@
-{ "env": { "jest": true } }
-