function loadBuiltin(builtinTable, name) {
  if (isArray(name) && typeof name[0] === "string") {
    if (builtinTable.hasOwnProperty(name[0])) {
      return [builtinTable[name[0]]].concat(name.slice(1));
    }

    return;
  } else if (typeof name === "string") {
    return builtinTable[name];
  } // Could be an actual preset/plugin module


  return name;
}
Loads the given name (or [name, options] pair) from the given table object
holding the available presets or plugins.

Returns undefined if the preset or plugin is not available; passes through
name unmodified if it (or the first element of the pair) is not a string.