export default function nicetime ( current , previous ) { var msPerMinute = 60 * 1000 ; var msPerHour = msPerMinute * 60 ; var msPerDay = msPerHour * 24 ; var msPerMonth = msPerDay * 30 ; var msPerYear = msPerDay * 365 ; var elapsed = current - previous ; if ( elapsed < msPerMinute ) { return Math . round ( elapsed / 1000 ) + ' seconds ago' ; } else if ( elapsed < msPerHour ) { return Math . round ( elapsed / msPerMinute ) + ' minutes ago' ; } else if ( elapsed < msPerDay ) { return Math . round ( elapsed / msPerHour ) + ' hours ago' ; } else if ( elapsed < msPerMonth ) { return Math . round ( elapsed / msPerDay ) + ' days ago' ; } else if ( elapsed < msPerYear ) { return Math . round ( elapsed / msPerMonth ) + ' months ago' ; } else { return Math . round ( elapsed / msPerYear ) + ' years ago' ; } }