refactor: module.exports => exports

lib/config/index.js

@@ -9,11 +9,9 @@ const fileParser = require('./file');
 const cliParser = require('./cli');
 const envParser = require('./env');
 
-module.exports = {
-  parseConfigs,
-  mergeChildConfig,
-  filterConfig,
-};
+exports.parseConfigs = parseConfigs;
+exports.mergeChildConfig = mergeChildConfig;
+exports.filterConfig = filterConfig;
 
 async function parseConfigs(env, argv) {
   logger.debug('Parsing configs');