/*
 * Conditionally export a function for testing
 *
 * Usage:
 * (src/file.js)
 * $test(privateHelper, module, [nameForExport])
 *
 * (src/file_test.js)
 * import { name } from './file'
 *
 */

export const $test = (func, mod, name) => {
  if (process.env.NODE_ENV === 'test') {
    mod.exports[name || func.name] = func;
  }
  return func;
};