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nip21.ts
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nip21.ts
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import {BECH32_REGEX, decode, type DecodeResult} from './nip19.ts'
/** Nostr URI regex, eg `nostr:npub1...` */
export const NOSTR_URI_REGEX = new RegExp(`nostr:(${BECH32_REGEX.source})`)
/** Test whether the value is a Nostr URI. */
export function test(value: unknown): value is `nostr:${string}` {
return (
typeof value === 'string' &&
new RegExp(`^${NOSTR_URI_REGEX.source}$`).test(value)
)
}
/** Parsed Nostr URI data. */
export interface NostrURI {
/** Full URI including the `nostr:` protocol. */
uri: `nostr:${string}`
/** The bech32-encoded data (eg `npub1...`). */
value: string
/** Decoded bech32 string, according to NIP-19. */
decoded: DecodeResult
}
/** Parse and decode a Nostr URI. */
export function parse(uri: string): NostrURI {
const match = uri.match(new RegExp(`^${NOSTR_URI_REGEX.source}$`))
if (!match) throw new Error(`Invalid Nostr URI: ${uri}`)
return {
uri: match[0] as `nostr:${string}`,
value: match[1],
decoded: decode(match[1])
}
}