packages/nodeppt-parser/lib/markdown/attrs/index.js
function get(arr, n) {
    return n >= 0 ? arr[n] : arr[arr.length + n];
}
function get(arr, n) {
    return n >= 0 ? arr[n] : arr[arr.length + n];
}
function get ( arr , n ) { return n >= 0 ? arr [ n ] : arr [ arr . length + n ] ; }
Get n item of array. Supports negative n, where -1 is last
element in array.
@param {array} arr
@param {number} n
Get n item of array . Supports negative n where - 1 is last element in array .