text: // Every string will be changed to double quotes, unless we end up with fewer
  // escaped quotes by using single quotes. (Vice versa if the "singleQuote"
  // option is true).
  //
  // Note that even if a string already has the correct enclosing quotes, it is
  // still processed in order to remove unnecessarily escaped quotes within it,
  // for consistency.
  
  // Simple strings.
  "abc"
  'abc'
  
  // Escape.
  '\0'
  
  // Emoji.
  '🐶'
  
  // Empty string.
  ""
  ''
  
  // Single double quote.
  "\""
  '"'
  
  // Single single quote.
  "'"
  '\''
  
  // Unnecessary escapes.
  "\'"
  '\"'
  
  // One of each.
  "\"'"
  '"\''
  
  // One of each with unnecessary escapes.
  "\"\'"
  '\"\''
  
  // More double quotes than single quotes.
  "\"'\""
  '"\'"'
  
  // More single quotes than double quotes.
  "\"''"
  '"\'\''
  
  // Two of each.
  "\"\"''"
  '""\'\''
  
  // Single backslash.
  '\\'
  "\\"
  
  // Backslases.
  "\"\\\"\\\\\" '\'\\'\\\'\\\\'"
  '\'\\\'\\\\\' "\"\\"\\\"\\\\"'
  
  // Somewhat more real-word example.
  "He's sayin': \"How's it goin'?\" Don't ask me why."
  'He\'s sayin\': "How\'s it goin\'?" Don\'t ask me why.'
  
  // Somewhat more real-word example 2.
  "var backslash = \"\\\", doubleQuote = '\"';"
  'var backslash = "\\", doubleQuote = \'"\';'
  