chore: Exclude ios beta version from browser support list (#1541)

Author: cwli24

tools/browsers-lists/lt-desktop-latest-vers.json

@@ -1,7 +1,7 @@
 {
   "chrome": 138,
   "edge": 138,
-  "firefox": 140,
+  "firefox": 141,
   "safari": 19,
   "safari_min": 17
 }

tools/browsers-lists/lt-mobile-supported.json

@@ -1,8 +1,8 @@
 {
   "ios": [
     {
-      "device_name": "iPhone 16 Pro",
-      "version": "26.0",
+      "device_name": "iPhone 16",
+      "version": "18.1",
       "platformName": "ios"
     },
     {

tools/browsers-lists/lt-update-supported.mjs

@@ -47,6 +47,7 @@ function updateLatestVersions (deskPlatforms) {
  */
 function updateMobileVersions (mobilePlatforms) {
   const MIN_SUPPORTED_IOS = Math.floor(browserslistMinVersion('last 10 iOS versions')) // LT ios versions don't align exactly with browserlist
+  const STABLE_FULL_IOS = browserslistMaxVersion('last 10 iOS versions') // get the latest stable full release (not beta)
   const testedMobileVersionsJson = {}
 
   const iosDevices = mobilePlatforms.find(p => p.platform === 'ios')?.devices
@@ -62,9 +63,8 @@ function updateMobileVersions (mobilePlatforms) {
   if (!iosDevices || !androidDevices) throw new Error('iOS or Android mobile could not be found in API response.')
 
   // iOS versions should already be sorted in descending; the built list should also be in desc order.
-  const latestiOSVersion = Number(iosDevices[0].version)
   const testediOSVersions = [
-    iosDevices.find(spec => Number(spec.version) === latestiOSVersion),
+    iosDevices.find(spec => Number(spec.version) <= STABLE_FULL_IOS),
     iosDevices.findLast(spec => Number(spec.version) >= MIN_SUPPORTED_IOS)
   ]
   testediOSVersions.forEach(ltFormatSpec => { ltFormatSpec.platformName = 'ios' })
@@ -95,3 +95,9 @@ const browserslistMinVersion = query => {
   const version = list[list.length - 1].split(' ')[1] // browserslist returns id version pairs like 'ios_saf 16.1'
   return Number(version.split('-')[0]) // versions might be a range (e.g. 14.0-14.4), and we want the low end.
 }
+
+const browserslistMaxVersion = query => {
+  const list = browserslist(query)
+  const version = list[0].split(' ')[1] // browserslist returns id version pairs like 'ios_saf 16.1'
+  return Number(version.split('-')[0])
+}