const mentionParser = require('mention-parser')

const str = 'hey @bukinoshita and @here, check this #channel!'

mentionParser(str).get()
// => ['@bukinoshita', '@here']

mentionParser(str, { prefix: '#' }).get()
// => ['#channel']

mentionParser(str).replace(mention => `<a href="/channel">${mention}</a>`)
// => 'hey <a href="/bukinoshita">@bukinoshita</a> and <a href="/here">@here</a>, check this #channel!'