var npm = require("npm");
var path = require("path");
npm.load({
    loaded: false
}, function (err) {

    let target = path.resolve("./testPackage");
    let last = process.cwd();
    process.chdir(target);
    console.log('p',process.cwd());
    
    // catch errors
    npm.commands.install(['.'], function (er, data) {
        // log the error or data
        //data && console.log('install',data);
        if(er){
            console.error('err',er);
        }
    });
    npm.on("log", function (message) {
        // log the progress of the installation
        //console.log('log',message);
    });
});