fix(overmind): default to development environment

Author: christianalfoni

packages/node_modules/overmind/src/index.ts

@@ -49,7 +49,8 @@ export interface OnInitialize extends IOnInitialize<Config> {}
 const IS_NODE =
   typeof module !== 'undefined' && (!this || this.module !== module)
 const IS_PRODUCTION = process.env.NODE_ENV === 'production'
-const IS_DEVELOPMENT = process.env.NODE_ENV === 'development'
+const IS_DEVELOPMENT =
+  !process.env.NODE_ENV || process.env.NODE_ENV === 'development'
 const IS_OPERATOR = Symbol('operator')
 
 export const makeStringifySafeMutations = (mutations: IMutation[]) => {