Configuration file / token-based auth support

lib/config.js

@@ -0,0 +1,32 @@
+'use strict';
+
+import findup from 'find-up';
+import yaml from 'js-yaml';
+import deepFreeze from 'deep-freeze';
+import fs from 'fs';
+import _ from 'lodash';
+
+let config = {};
+    
+let configFile = findup.sync('localtunnel.yaml') || findup.sync('localtunnel.yml');
+
+if (configFile) {
+    
+    try {
+      config = yaml.safeLoad(fs.readFileSync(configFile, 'utf8'));
+    } catch(e) {
+        const err = new Error(`Unable to load config file: ${configFile}`);
+        err.code = 'CONFIG_LOAD_ERROR';
+        throw err;
+    }
+    
+}
+
+_.defaultsDeep(config, {
+    'require_token': false,
+    'tokens': []
+});
+
+config = deepFreeze(config || {});
+
+export default config;