git ssb

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const nest = require('depnest')
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const ref = require('ssb-ref')
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const computed = require('mutant/computed')
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exports.needs = nest({
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  'keys.sync.id': 'first',
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  'channel.obs.subscribed': 'first',
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})
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exports.gives = nest('channel.obs.isSubscribedTo')
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exports.create = function (api) {
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  return nest('channel.obs.isSubscribedTo', isSubscribedTo)
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  function isSubscribedTo (channel, id) {
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    if (!ref.isFeed(id)) {
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      id = api.keys.sync.id()
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    }
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    const { subscribed } = api.channel.obs
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    const myChannels = subscribed(id)
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    return computed([myChannels], (v) => v.has(channel))
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  }
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}
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