- import assertString from './util/assertString';
 
- import toDate from './toDate';
 
- export default function isBefore(str) {
 
-   var date = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : String(new Date());
 
-   assertString(str);
 
-   var comparison = toDate(date);
 
-   var original = toDate(str);
 
-   return !!(original && comparison && original < comparison);
 
- }
 
 
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