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, map } = require('mutant')
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exports.needs = nest({
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  'message.sync.root': 'first',
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  'backlinks.obs.references': '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.references')
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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.references', function (msg) {
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    if (!ref.type(msg.key)) return []
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    const references = api.backlinks.obs.references(msg)
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    return [
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      map(references, link => {
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        return h('a.backlink', {
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          href: link.id, title: link.id
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        }, [
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          h('strong', [
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            api.profile.html.person(link.author), i18n(' referenced this message:')
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          ]), ' ',
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          api.message.obs.name(link.id)
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        ])
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      }, {
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        // treat all items as immutable (mutant cannot detect this as they are objects)
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        comparer: (a, b) => a === b
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      })
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    ]
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  })
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}
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