git ssb

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var isArray = require('isarray')
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var isPosition = require('../../isPosition')
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var Position = require('../../position/sync/position')
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//Expects a po
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module.exports = function ({positions, poll}) { //postions must be of the correct type ie checked by the caller.
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  return positions.reduce(function (results, position) {
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    var { positionDetails: {choice} } = Position(position)
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    if (choice >= poll.pollDetails.choices.length || position.value.timestamp > poll.closesAt) {
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      results.errors.invalidPositions.push(position)
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      return results
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    }
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    if (!isArray(results[choice])) {
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      results[choice] = []
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    }
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    results[choice].push(position.value.author)
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    return results
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  }, {errors: {invalidPositions: []}})
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}
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