fix: support ipv6 urls

index.js

@@ -1,20 +1,22 @@
 'use strict'
 
 const URL = globalThis ? globalThis.URL : require('url').URL
-
-const urlRegex = require('url-regex-safe')({
-  apostrophes: true,
-  exact: true,
-  parens: true
-})
+const urlRegex = require('url-regex-safe')
 
 const REGEX_HTTP_PROTOCOL = /^https?:\/\//i
 
 module.exports = url => {
   try {
-    const { href } = new URL(url)
-    return REGEX_HTTP_PROTOCOL.test(href) && urlRegex.test(href) && href
-  } catch (err) {
+    const { href, hostname } = new URL(url)
+    const isIPv6 = hostname.startsWith('[') && hostname.endsWith(']')
+    return (
+      REGEX_HTTP_PROTOCOL.test(href) &&
+      urlRegex({ apostrophes: true, exact: !isIPv6, parens: true }).test(
+        href
+      ) &&
+      href
+    )
+  } catch (_) {
     return false
   }
 }

test/index.js

@@ -8,6 +8,10 @@ const test = require('ava')
 ].forEach(({ fn: httpUrl, isLightweight }) => {
   test(isLightweight ? 'lightweight » true' : 'true', t => {
     ;[
+      'http://169.254.169.254:1337/',
+      'http://[::ffff:a9fe:a9fe]/metadata/v1/',
+      'http://[0:0:0:0:0:ffff:a9fe:a9fe]/metadata/v1/',
+      'http://[0:0:0:0:0:ffff:169.254.169.254]/metadata/v1/',
       'http://kikobeats.com',
       "https://en.wikipedia.org/wiki/Amdahl's_law",
       'https://kikobeats.com',
@@ -16,7 +20,7 @@ const test = require('ava')
       'http://www.kikobeats.com'
     ].forEach(input => {
       const url = httpUrl(input)
-      t.is(typeof url, 'string')
+      t.is(typeof url, 'string', `'${input}' is not true`)
       t.true(!!url)
     })
   })