fix/improve tests on Windows

Author: rolodato

package.json

@@ -18,14 +18,15 @@
     "url": "git://github.com/rolodato/dotenv-safe.git"
   },
   "scripts": {
-    "pretest": "./node_modules/eslint/bin/eslint.js index.js config.js MissingEnvVarsError.js test/.",
-    "test": "HELLO=fromTheOtherSide mocha"
+    "pretest": "eslint index.js config.js MissingEnvVarsError.js test/.",
+    "test": "cross-env HELLO=fromTheOtherSide mocha"
   },
   "peerDependencies": {
     "dotenv": ">= 8.2.0"
   },
   "devDependencies": {
     "chai": "^4.2.0",
+    "cross-env": "^7.0.3",
     "eslint": "^6.8.0",
     "fs-extra": "^9.0.0",
     "lodash.clonedeep": "^4.5.0",