git ssb

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var nest = require('depnest')
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var ref = require('ssb-ref')
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exports.needs = nest({
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  'keys.sync.id': 'first',
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  'sbot.async.publish': 'first',
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  'channel.obs.subscribed': 'first',
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})
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exports.gives = nest({
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  'channel.async': ['subscribe', 'unsubscribe']
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})
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exports.create = function (api) {
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  return nest({
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    'channel.async': {subscribe, unsubscribe}
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  })
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  function subscribe (channel, cb) {
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    if (!channel) throw new Error('a channel must be specified')
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    api.sbot.async.publish({
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      type: 'channel',
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      channel: channel,
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      subscribed: true
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    }, cb)
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  }
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  function unsubscribe (channel, cb) {
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    if (!channel) throw new Error('a channel must be specified')
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    api.sbot.async.publish({
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      type: 'channel',
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      channel: channel,
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      subscribed: false
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    }, cb)
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  }
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}
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