Function isDeletable

src/lib/nested_property.js:127–129

(val, propStr)

 */
var ARGS_PATTERN = /(^|\.)args\[/;
function isDeletable(val, propStr) {
    return (val === undefined) || (val === null && !propStr.match(ARGS_PATTERN));
}

function npSet(cont, parts, propStr) {
    return function(val) {