Intl.DurationFormat

A spec-compliant polyfill for Intl.DurationFormat

Installation

npm

npm i @formatjs/intl-durationformat

yarn

yarn add @formatjs/intl-durationformat

Requirements

• Intl.ListFormat or polyfill
• Intl.NumberFormat or polyfill.

Usage

Via polyfill-fastly.io

You can use polyfill-fastly.io URL Builder to create a polyfill script tag for Intl.DurationFormat.

<!-- Polyfill Intl.DurationFormat, its dependencies & `en` locale data -->
<script src="https://polyfill-fastly.io/v3/polyfill.min.js?features=Intl.DurationFormat"></script>

Simple

import '@formatjs/intl-durationformat/polyfill'

Dynamic import + capability detection

import {shouldPolyfill} from '@formatjs/intl-durationformat/should-polyfill'
async function polyfill(locale: string) {
  const unsupportedLocale = shouldPolyfill(locale)
  // This locale is supported
  if (!unsupportedLocale) {
    return
  }
  // Load the polyfill 1st BEFORE loading data
  await import('@formatjs/intl-durationformat/polyfill-force')
}