# Contributing to Day.js Thank you for taking the time to read our contribution guidelines. You can start contributing in many ways like filing bug reports, [improving the locale && documentation](https://github.com/iamkun/dayjs/issues/171), or helping others. Our open source community strives to be nice, welcoming and professional. Instances of abusive, harassing, or otherwise unacceptable behavior will not be tolerated. ## Style * Day.js is written in ES6. * We use ESLint to check our code. You can use `npm run lint` before submitting a pull request. * Please use semantic commit message. ## Bugs * Before submitting a bug report, search the issues for similar tickets. Your issue may have already been discussed and resolved. * Feel free to add a comment to an existing issue, even if it's closed. * Be thorough in your title and report, don't leave out important details. * English, please. ## Tests * Feel free to create a new `test/*.test.js` file if none of the existing test files suits your test case. * Help us keeping 100% test coverage :D. * You can use `npm run test` before submitting a pull request.