lib/cli/nodemcu-tool.js
function(opt){
        // merge with default options
        Object.keys(_options).forEach(function(key){
            _options[key] = opt[key] || _options[key];
        });
    }
function(opt){
        // merge with default options
        Object.keys(_options).forEach(function(key){
            _options[key] = opt[key] || _options[key];
        });
    }
function ( opt ) { // merge with default options Object . keys ( _options ) . forEach ( function ( key ) { _options [ key ] = opt [ key ] || _options [ key ] ; } ) ; }
set connector options
set connector options