j-gallery/example/node_modules/babel-runtime/helpers/temporalRef.js

a picture layout library

"use strict";

exports.__esModule = true;

exports.default = function (val, name, undef) {
  if (val === undef) {
    throw new ReferenceError(name + " is not defined - temporal dead zone");
  } else {
    return val;
  }
};