const nest = require('depnest') const { h, computed, map } = require('mutant') exports.gives = nest('message.html.meta') exports.needs = nest({ 'about.obs.name': 'first', 'message.obs.likes': 'first' }) exports.create = (api) => { return nest('message.html.meta', likes) function likes (msg) { const symbol = '\u2713' // tick 🗸 var likes = api.message.obs.likes(msg.key) var body = computed(likes, likes => likes.length > 4 ? likes.length + ' ' + symbol : Array(likes.length).fill(symbol).join('') ) var names = map(likes, id => api.about.obs.name(id)) var title = computed(names, names => names.map(n => '@' + n).join('\n')) return h('a.likes', { title }, body) } }