fix: improve local configRegister file resolution

Fixes #746 by first checking, if the dependency is a local file or a package.
module.paths doesn't work for requiring local paths.

Author: stephtr

lib/groups/config.js

@@ -46,14 +46,17 @@ class ConfigGroup extends GroupHelper {
 
         this.configOptions = (() => {
             if (register && register.length) {
-                module.paths.unshift(resolve(process.cwd(), 'node_modules'), process.cwd());
+                module.paths.unshift(resolve(process.cwd(), 'node_modules'));
                 register.forEach(dep => {
-                    require(dep);
+                    const isRelative = ["./", "../", ".\\", "..\\"].some(start => dep.startsWith(start));
+                    if (isRelative) {
+                        require(resolve(process.cwd(), dep));
+                    } else {
+                        require(dep);
+                    }
                 });
-                return require(configPath);
-            } else {
-                return require(configPath);
             }
+            return require(configPath);
         })();
     }