A spec-compliant polyfill/ponyfill for Intl.supportedValuesOf.

Installation#

npm i @formatjs/intl-enumerator

Requirements#

• Intl.Collator
• Intl.DateTimeFormat or polyfill
• Intl.NumberFormat or polyfill.

Usage#

Simple#

import '@formatjs/intl-enumerator/polyfill.js'

Dynamic import + capability detection#

async function polyfill() {
  // This platform already supports Intl.supportedValuesOf
  if (shouldPolyfill()) {
    await import('@formatjs/intl-enumerator/polyfill.js')
  }
  // Alternatively, force the polyfill regardless of support
  await import('@formatjs/intl-enumerator/polyfill-force.js')
}

Tests#

This library is test262-compliant.