Feature/install dir

[john-redd]

This change only affects node-windows. Both node-mac and node-linux have global install locations.

Currently the install method of node-windows accepts a parameter named dir that will resolve as a path with the daemon folder and it's children appended to it. Currently this results in an error when trying to uninstall the service because the uninstall method does not accept the dir parameter, nor does it have any other way of knowing where the daemon folder was installed.

Furthermore, the exists getter does not detect the service installation because it also has no way of knowing if or what the value of the dir parameter that was passed to the install method.

const scriptPath = path.join(__dirname, 'server', 'dist', 'index.js');

// Create a new service object
const svc = new Service({
  name: `service-name`,
  description: 'Service description',
  script: scriptPath,
  env: [{
    name: 'NODE_ENV',
    value: 'production'
  }]
});

// Listen for the "install" event, which indicates the
// process is available as a service.
svc.on('install',function(){
  console.log('Service installed.');
  svc.start();
  console.log('Service started.');
});

// Listen for the "uninstall" event so we know when it's done.
svc.on('uninstall',function(){
  console.log('Uninstall complete.');
  console.log('The service exists: ', svc.exists);
});

const args = process.argv.slice(2)

switch(args[0]){
  case 'install':
    svc.install(__dirname); // ends up calling this.directory(__dirname)
    console.log(svc.exists) // false - This result is due to the resulting call of this.directory()
    break;
  case 'uninstall':
    svc.uninstall(); // Results in the error "Uninstall was skipped because process does not exist or could not be found." because this.exists === false, despite being able to see the 'daemon' folder in the project root.
    break;
  default:
    console.log('Invalid argument provided.');
    console.log('Valid Arguments:');
    console.log('install');
    console.log('uninstall');
    break;
}

This proposed change will remove the dir parameter from the install method, which is inconsistent with both node-mac and node-linux, while also implementing a more reliable way of being able to specify the desired install directory of the service via a configuration option. This greatly improves the experience for Typescript projects because the script file around which the service will be built will be in a dist folder of some kind that is overwritten when building a new version.

[sangyookm]

is this feature not supported?