git ssb

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const Pushable = require('pull-pushable')
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module.exports = function () {
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  return function () {
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    const stream = Pushable(() => {
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      clearInterval(timer)
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    })
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    const timer = setInterval(function () {
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      stream.push(Date.now())
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    }, 500)
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    return stream
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  }
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}
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