old_contents: 'use strict'
  
  /* Expose. */
  module.exports = longestStreak
  
  /* Get the count of the longest repeating streak of
   * `character` in `value`. */
  function longestStreak(value, character) {
    var count = 0
    var maximum = 0
    var expected
    var index
  
    if (typeof character !== 'string' || character.length !== 1) {
      throw new Error('Expected character')
    }
  
    value = String(value)
    index = value.indexOf(character)
    expected = index
  
    while (index !== -1) {
      count++
  
      if (index === expected) {
        if (count > maximum) {
          maximum = count
        }
      } else {
        count = 1
      }
  
      expected = index + 1
      index = value.indexOf(character, expected)
    }
  
    return maximum
  }
  
new_contents: 'use strict'
  
  module.exports = longestStreak
  
  // Get the count of the longest repeating streak of `character` in `value`.
  function longestStreak(value, character) {
    var count = 0
    var maximum = 0
    var expected
    var index
  
    if (typeof character !== 'string' || character.length !== 1) {
      throw new Error('Expected character')
    }
  
    value = String(value)
    index = value.indexOf(character)
    expected = index
  
    while (index !== -1) {
      count++
  
      if (index === expected) {
        if (count > maximum) {
          maximum = count
        }
      } else {
        count = 1
      }
  
      expected = index + 1
      index = value.indexOf(character, expected)
    }
  
    return maximum
  }
  
subject: Refactor comment-style