<!-- Please provide a clear and concise description of what the bug is. Include screenshots if needed. Please test using the latest React Native release to make sure your issue has not already been fixed: http://facebook.github.io/react-native/docs/upgrading.html --> React Native version: RN60 <!-- Run `react-native info` in your terminal and copy the results here. --> new Date('Jul 18, 2018') is not supported on RN new Date('18-07-2018 12:00') is not supported on RN ## Steps To Reproduce 1. add date: const reproduce = new Date('Jul 18, 2018'); 2. It will crash in production <!-- Issues without reproduction steps or code are likely to stall. --> Describe what you expected to happen: It should return the expected date. Snack, code example, screenshot, or link to a repository: export function getDateFormat(date = 'Jul 18, 2018' ) { const newDate = new Date(date); return newDate; } export function getDateFormat(date = '18-07-2018 12:00' ) { const newDate = new Date(date); return newDate; } <!-- Please provide a Snack (https://snack.expo.io/), a link to a repository on GitHub, or provide a minimal code example that reproduces the problem. You may provide a screenshot of the application if you think it is relevant to your bug report. Here are some tips for providing a minimal example: https://stackoverflow.com/help/mcve. -- -->