# @welshman/util [![version](https://badgen.net/npm/v/@welshman/util)](https://npmjs.com/package/@welshman/util) Some nostr-specific utilities. For the most part, these will not have side effects or manage state. Includes: - Event kind constants - A nostr address class - Utilities for working with nostr filters and tags - Helpers for working with zap events and lightning invoices - A `Encryptable` for ensuring payloads get encrypted - An implementation of an in-memory relay, backed by an events repository - Utilities for building events, validating signatures, and checking event type (replaceable, etc.) - Types and utilities for NIP 89 handlers - Types and utilities for NIP 51 lists - Types and utilities for NIP 01 profile metadata - Types and utilities for NIP 11 relay profiles