Function isMatchingGenericTagCriterion

src/utils/event.ts:43–54

(key: string, criterion: string)

  (event: Event): boolean => {
    const startsWith = (input: string) => (prefix: string) => input.startsWith(prefix)
    const isMatchingGenericTagCriterion = (key: string, criterion: string) => (tag: Tag): boolean => {
      const [, tagName] = key
      if (tag[0] !== tagName) {
        return false
      }

      if (isGeohashPrefixCriterion(key, criterion)) {
        return tag[1].startsWith(stripGeohashPrefixWildcard(criterion))
      }

      return tag[1] === criterion
    }

    // NIP-01: Basic protocol flow description