in amplify-theme/assets/js/scripts.js [115:131]
$.fn.reduce = function( fnReduce, initialValue ) {
var values = this,
previousValue = initialValue;
values.each( function( index, currentValue ) {
previousValue = fnReduce.call(
currentValue,
previousValue,
currentValue,
index,
values
);
} );
return previousValue;
};