Function namespaceToRegExp

packages/hardhat-utils/src/internal/debug.ts:52–58

* Converts a `DEBUG`-style namespace pattern into an anchored regex. * Regex metacharacters are escaped to match literally, and `*` is translated * into `.*?` so it behaves as a glob wildcard.

(namespace: string)

 * into `.*?` so it behaves as a glob wildcard.
 */
function namespaceToRegExp(namespace: string): RegExp {
  const escaped = namespace
    .replace(/[.+?^${}()|[\]\\]/g, "\\$&")
    .replace(/\*/g, ".*?");

  return new RegExp(`^${escaped}$`);
}

/**
 * Checks whether a namespace is enabled under the given `DEBUG` pattern string.