Validate and format phone number, or return nothing, if such phone is not valid.
npm i fix-phone --save
var fix = require('fix-phone');
fix('ua', '050-121-22-33'); // returns +380501212233
fix('ua', '010-121-22-33'); // returns null
fix.decompose('ua', '050-121-22-33'); // returns { country: '+380', local: '50', phone: '1212233' }
fix.decompose('ua', '010-121-22-33'); // returns null
Take look at country modules directory.
MIT