Function createRequire

lib/internal/modules/cjs/loader.js:2150–2171

* Creates a new `require` function that can be used to load modules. * @param {string | URL} filenameOrURL The path or URL to the module context for this `require` * @throws {ERR_INVALID_ARG_VALUE} If `filename` is not a string or URL, or if it is a relative path that cannot be * resolved to an a

(filenameOrURL)

 * @returns {object}
 */
function createRequire(filenameOrURL) {
  let filepath, fileURL;

  if (isURL(filenameOrURL) ||
      (typeof filenameOrURL === 'string' && !path.isAbsolute(filenameOrURL))) {
    try {
      // It might be an URL, try to convert it.
      // If it's a relative path, it would not parse and would be considered invalid per
      // the documented contract.
      fileURL = new URL(filenameOrURL);
      filepath = fileURLToPath(fileURL);
    } catch {
      throw new ERR_INVALID_ARG_VALUE('filename', filenameOrURL,
                                      createRequireError);
    }
  } else if (typeof filenameOrURL !== 'string') {
    throw new ERR_INVALID_ARG_VALUE('filename', filenameOrURL, createRequireError);
  } else {
    filepath = filenameOrURL;
  }
  return createRequireFromPath(filepath, fileURL);
}

/**
 * Checks if a path is relative