diff --git a/index.js b/index.js
index c8f2fd4467c11b484fe654f7f250e2ba37e8100d..c9ae1ed3d3c7683b14dfe0eee801f5a07585d2aa 100644
--- a/index.js
+++ b/index.js
@@ -5,7 +5,16 @@ if (typeof electron === 'string') {
 	throw new TypeError('Not running in an Electron environment!');
 }
 
-const isEnvSet = 'ELECTRON_IS_DEV' in process.env;
-const getFromEnv = Number.parseInt(process.env.ELECTRON_IS_DEV, 10) === 1;
+const isDev = () => {
+	if ('ELECTRON_IS_DEV' in process.env) {
+		return Number.parseInt(process.env.ELECTRON_IS_DEV, 10) === 1;
+	}
 
-module.exports = isEnvSet ? getFromEnv : !electron.app.isPackaged;
+	if (process.type === 'browser') {
+		return !electron.app.isPackaged;
+	}
+
+	return 'npm_package_name' in process.env;
+};
+
+module.exports = isDev();