Escape any escape sequences in a string

gistfile1.js

var escapeEscapeSequences = function (str) {
  return str
    .replace(/[\\]/g, '\\\\') // Slash has to go first
    .replace(/[\b]/g, '\\b')
    .replace(/[\f]/g, '\\f')
    .replace(/[\n]/g, '\\n')
    .replace(/[\r]/g, '\\r')
    .replace(/[\t]/g, '\\t');
};