chore: drop psl direct dep and stale getDomain helper

The banner-rule logic that needed eTLD+1 grouping now lives in the
NetworkConnectionBannerController package; nothing in the extension
imports `getDomain` anymore.

Author: cryptodev-2s

package.json

@@ -507,7 +507,6 @@
     "nanoid": "^3.3.8",
     "pify": "^5.0.0",
     "prop-types": "^15.6.1",
-    "psl": "^1.15.0",
     "punycode": "^2.1.1",
     "qrcode-generator": "^2.0.4",
     "qrcode.react": "^4.2.0",

shared/lib/url-utils.test.ts

@@ -1,4 +1,4 @@
-import { getDomain, isLocalhostOrIPAddress } from './url-utils';
+import { isLocalhostOrIPAddress } from './url-utils';
 
 describe('isLocalhostOrIPAddress', () => {
   it('returns true for "localhost" (any case)', () => {
@@ -23,43 +23,3 @@ describe('isLocalhostOrIPAddress', () => {
     expect(isLocalhostOrIPAddress('my-custom-rpc')).toBe(false);
   });
 });
-
-describe('getDomain', () => {
-  it('returns the last two labels for a multi-label hostname', () => {
-    expect(getDomain('https://mainnet.infura.io/v3/abc')).toBe('infura.io');
-  });
-
-  it('groups subdomain-heavy hostnames under the same registrable domain', () => {
-    expect(getDomain('https://linea-mainnet.infura.io/v3/abc')).toBe(
-      'infura.io',
-    );
-    expect(getDomain('https://polygon-mainnet.g.alchemy.com/v2/abc')).toBe(
-      'alchemy.com',
-    );
-  });
-
-  it('returns the hostname as-is when it has exactly two labels', () => {
-    expect(getDomain('https://alchemy.com/')).toBe('alchemy.com');
-  });
-
-  it('handles multi-part public suffixes like .co.uk', () => {
-    expect(getDomain('https://api.example.co.uk/v1')).toBe('example.co.uk');
-    expect(getDomain('https://example.co.uk/')).toBe('example.co.uk');
-  });
-
-  it('returns single-label hosts (e.g., localhost) verbatim', () => {
-    expect(getDomain('http://localhost:8545')).toBe('localhost');
-  });
-
-  it('returns IPv4 addresses verbatim', () => {
-    expect(getDomain('http://127.0.0.1:8545')).toBe('127.0.0.1');
-  });
-
-  it('returns IPv6 addresses verbatim, including brackets', () => {
-    expect(getDomain('http://[::1]:8545')).toBe('[::1]');
-  });
-
-  it('returns null for an invalid URL', () => {
-    expect(getDomain('not a url')).toBeNull();
-  });
-});

shared/lib/url-utils.ts

@@ -1,6 +1,5 @@
 import urlLib from 'url';
 import ipRegex from 'ip-regex';
-import psl from 'psl';
 
 export function addUrlProtocolPrefix(urlString: string) {
   let trimmed = urlString.trim();
@@ -80,31 +79,3 @@ export function isLocalhostOrIPAddress(hostname: string): boolean {
 
   return ipRegex({ exact: true }).test(hostnameWithoutBrackets);
 }
-
-/**
- * Registrable domain (eTLD+1) for a URL, computed via the Public Suffix List
- * so multi-part suffixes like ".co.uk" resolve correctly. Used to group RPC
- * endpoints by provider so a single provider's wide outage (e.g. *.infura.io)
- * is treated as one failure rather than many.
- *
- * Localhost, IP literals, and single-label hosts are returned verbatim rather
- * than reduced to a domain (psl returns null or garbage for those, and callers
- * grouping by domain still need to distinguish them).
- *
- * @param urlString - The URL to extract a domain from.
- * @returns The domain, or null if the URL is invalid.
- */
-export function getDomain(urlString: string): string | null {
-  const url = getValidUrl(urlString);
-  if (url === null) {
-    return null;
-  }
-
-  const { hostname } = url;
-
-  if (!hostname.includes('.') || isLocalhostOrIPAddress(hostname)) {
-    return hostname;
-  }
-
-  return psl.get(hostname) ?? hostname;
-}

types/psl.d.ts

@@ -44,8 +44,6 @@ import {
 } from '../../../shared/lib/selectors/networks';
 import { createDeepEqualSelector } from '../../../shared/lib/selectors/selector-creators';
 import { getEnabledNetworks } from '../../../shared/lib/selectors/multichain';
-import { getIsMetaMaskInfuraEndpointUrl } from '../../../shared/lib/network-utils';
-import { getDomain } from '../../../shared/lib/url-utils';
 import type { RemoteFeatureFlagsState } from '../../../shared/lib/selectors/remote-feature-flags';
 import {
   type AccountsState,

ui/selectors/multichain/networks.ts

@@ -33575,7 +33575,6 @@ __metadata:
     prettier-plugin-sort-json: "npm:^4.1.1"
     process: "npm:^0.11.10"
     prop-types: "npm:^15.6.1"
-    psl: "npm:^1.15.0"
     pumpify: "npm:^2.0.1"
     punycode: "npm:^2.1.1"
     qrcode-generator: "npm:^2.0.4"