fix(@formatjs/intl-numberformat): add polyfill check for ES2023, fix #…

…4327
formatjs · Jan 26, 2024 · 9ea1e94 · 9ea1e94
1 parent d22ebf9
commit 9ea1e94
Showing 1 changed file with 24 additions and 0 deletions.
diff --git a/packages/intl-numberformat/should-polyfill.ts b/packages/intl-numberformat/should-polyfill.ts
@@ -38,6  38,29 @@ function supportsES2020() {
   return true
 }
 
 /**
  * Check if Intl.NumberFormat is ES2020 compatible.
  * Caveat: we are not checking `toLocaleString`.
  *
  * @public
  * @param unit unit to check
  */
 function supportsES2023() {
   try {
     const s = new Intl.NumberFormat('en', {
       notation: 'compact',
       minimumSignificantDigits: 3,
       maximumSignificantDigits: 3,
       minimumFractionDigits: 2,
       maximumFractionDigits: 2,
       roundingPriority: 'morePrecision',
     }).format(1e8)
     return s === '100.00M'
   } catch (e) {
     return false
   }
 }
 
 function supportedLocalesOf(locale?: string | string[]) {
   if (!locale) {
     return true
@@ -51,6  74,7 @@ export function shouldPolyfill(locale = 'en') {
     typeof Intl === 'undefined' ||
     !('NumberFormat' in Intl) ||
     !supportsES2020() ||
     !supportsES2023() ||
     onlySupportsEn() ||
     !supportedLocalesOf(locale)
   ) {