@didtools/siwx/dist/parsing/domain.js

Typescript library for Sign-In With X

import { choice, foldMap, literal, match, option, joinSeq } from 'codeco/linear';
import { left, right } from 'codeco';
import { ipLiteral, ipv4Address } from './ip-address.js';
export const port = foldMap(match(/^\d+/), (digits)=>{
    if (String(parseInt(digits, 10)) === digits) return right(digits);
    return left(new Error(`Invalid port ${digits}`));
});
/**
 * ABNF:
 * ```
 * reg-name      = *( unreserved / pct-encoded / sub-delims )
 * unreserved    = ALPHA / DIGIT / "-" / "." / "_" / "~"
 * pct-encoded   = "%" HEXDIG HEXDIG
 * sub-delims    = "!" / "$" / "&" / "'" / "(" / ")" / "*" / "+" / "," / ";" / "="
 * ```
 */ export const regName = match(/^([a-zA-Z0-9\-._~!$&'()*+,;=]|(%[a-fA-F0-9]{2}))*/);
export const host = choice(ipLiteral, ipv4Address, regName);
/**
 * `dnsauthority    = host [ ":" port ]`
 */ const colonPort = joinSeq(literal(':'), port);
export const dnsauthority = joinSeq(host, option(colonPort, ''));
export const domain = foldMap(dnsauthority, (found)=>{
    if (!found) return left(new Error(`domain can not be empty`));
    return right(found);
});