node core libs with promises and better errors

Currently just fs is supported.

npm install --save newcore

fs

Example:

var fs = require('newcore/lib/fs');

fs.readFile('lorem.txt', 'utf-8')
.then((text) => {
  console.log(text);
})

// selective error handling
.catch(fs.errors.NotFound, () => {
  console.log('File lorem.txt is missing');
});

Errors:

Code | Error Name -----------|------------ EACCES | fs.errros.PermissionDenied EEXIST | fs.errors.FileExists EISDIR | fs.errors.IsDirectory ENOTDIR | fs.errors.NotDirectory ENOTEMPTY | fs.errors.NotEmptyDirectory ENOENT | fs.errors.NotFound EMFILE | fs.errors.OutOfFileDescriptors EPERM | fs.errors.Permissions