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Intl.ListFormat

A spec-compliant polyfill for Intl.ListFormat fully tested by the official ECMAScript Conformance test suite

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Installation​

npm i @formatjs/intl-listformat

Requirements​

Usage​

Via polyfill-fastly.io​

You can use polyfill-fastly.io URL Builder to create a polyfill script tag for Intl.ListFormat. By default the created URL does not come with any locale data. In order to add locale data, append Intl.ListFormat.~locale.<locale> to your list of features. For example:

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

Simple​

import'@formatjs/intl-listformat/polyfill'
import'@formatjs/intl-listformat/locale-data/en'// locale-data for en

Dynamic import + capability detection​

import{shouldPolyfill}from'@formatjs/intl-listformat/should-polyfill'
asyncfunctionpolyfill(locale:string){
const unsupportedLocale =shouldPolyfill(locale)
// This locale is supported
if(!unsupportedLocale){
return
}
// Load the polyfill 1st BEFORE loading data
awaitimport('@formatjs/intl-listformat/polyfill-force')
awaitimport(`@formatjs/intl-listformat/locale-data/${unsupportedLocale}`)
}

Tests​

This library is fully test262-compliant.

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