Function mergeOptions

src/utils.js:242–249

(options, defaults)

}

function mergeOptions(options, defaults) {
  options = options || {};
  defaults = defaults || defaultOptions();
  let ret = Object.assign({}, defaults, options);
  ret.chars = Object.assign({}, defaults.chars, options.chars);
  ret.style = Object.assign({}, defaults.style, options.style);
  return ret;
}

// Wrap on word boundary
function wordWrap(maxLength, input) {