git ssb

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const extend = require('xtend')
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module.exports = function (msg, bumpFilter) {
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  if (bumpFilter) {
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    let bump = typeof bumpFilter === 'function' ? bumpFilter(msg) : bumpFilter
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    if (bump) {
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      if (typeof bump === 'string') bump = { type: bump }
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      return extend({
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        id: msg.key,
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        author: msg.value.author
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      }, bump instanceof Object ? bump : {})
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    }
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  }
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}
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