@extra-array/drop-while-right/index.js

Discards values from right, while a test passes.

'use strict';
function scanUntilRight(x, ft) {
    for (var i = x.length - 1; i >= 0; i--)
        if (ft(x[i], i, x))
            break;
    return i + 1;
}
function dropWhileRight(x, ft) {
    return x.slice(0, scanUntilRight(x, ft));
}
module.exports = dropWhileRight;