Function fastKey

static/plugins/pdfmake/pdfmake.js:38035–38047

(it, create)

};

var fastKey = function (it, create) {
  // return a primitive with prefix
  if (!isObject(it)) return typeof it == 'symbol' ? it : (typeof it == 'string' ? 'S' : 'P') + it;
  if (!hasOwn(it, METADATA)) {
    // can't set metadata to uncaught frozen object
    if (!isExtensible(it)) return 'F';
    // not necessary to add metadata
    if (!create) return 'E';
    // add missing metadata
    setMetadata(it);
  // return object ID
  } return it[METADATA].objectID;
};

var getWeakData = function (it, create) {
  if (!hasOwn(it, METADATA)) {