in lib/dd.breakpoints.js [198:219]
_bpToEms = function(breakpoint, isMax) {
if (typeof (breakpoint) === 'number') {
return _pxToEms(breakpoint);
}
var list = (isMax === true) ? _maxBreakpoints : _minBreakpoints,
ems = '0';
for (var key in list) {
if (list.hasOwnProperty(key)) {
if (breakpoint === key.toLowerCase()) {
ems = _pxToEms(list[key]);
}
}
}
if (ems === '0') {
console.warn('DD.bp: Breakpoint \'' + breakpoint + '\' doesn\'t exist - replacing with 0');
}
return ems;
};