Parses an HTTP Content-Range header and returns response range information.
Complements parse-link-header and allows for missing range unit for compatibilitty with headers generated by hapi-pagination
npm install parse-content-range-header
const parse = require('parse-content-range-header');
const contentRange = 'items 0-19/30';
console.log(parse(contentRange));
{
unit: 'items',
first: 0,
last: 19,
length: 30
}