git ssb

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const nest = require('depnest')
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const ref = require('ssb-ref')
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const { h, computed } = require('mutant')
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const many = require('../../../many')
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exports.needs = nest({
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  'message.sync.root': 'first',
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  'backlinks.obs.forks': 'first',
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  'message.obs': {
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    name: 'first',
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    author: 'first'
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  },
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  'profile.html.person': 'first',
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  'intl.sync.i18n': 'first'
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})
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exports.gives = nest('message.html.forks')
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exports.create = function (api) {
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  const i18n = api.intl.sync.i18n
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  return nest('message.html.forks', function (msg) {
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    if (!ref.type(msg.key)) return []
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    const forks = api.backlinks.obs.forks(msg)
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    return [
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      computed(forks, links => {
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        if (links && links.length) {
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          const authors = new Set(links.map(link => link.author))
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          return h('a.backlink', {
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            href: msg.key,
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            anchor: links[0].id
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          }, [
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            h('strong', [
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              many(authors, api.profile.html.person, i18n), i18n(' forked this discussion:')
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            ]), ' ',
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            api.message.obs.name(links[0].id),
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            ' (', links.length, ')'
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          ])
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        }
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      }, { idle: true })
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    ]
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  })
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}
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