NumberFormatter

A wrapper around Intl.NumberFormat providing additional options, polyfills, and caching for performance.

Introduction

NumberFormatter is a wrapper around the native Intl.NumberFormat API. It exposes the same API, but works around several browser bugs and provides polyfills for newer features. These are currently:

A polyfill for the signDisplay option.
A polyfill for the unit style, currently only for the degree unit in the narrow style

See the MDN docs for full details on how to use the API.

Interface

`constructor(locale: string, options: NumberFormatOptions): void`
`format(value: number): string`
Formats a number value as a string, according to the locale and options provided to the constructor.
`formatToParts(value: number): Intl.NumberFormatPart[]`
Formats a number to an array of parts such as separators, digits, punctuation, and more.
`formatRange(start: number, end: number): string`
Formats a number range as a string.
`formatRangeToParts(start: number, end: number): NumberRangeFormatPart[]`
Formats a number range as an array of parts.
`resolvedOptions(): Intl.ResolvedNumberFormatOptions`
Returns the resolved formatting options based on the values passed to the constructor.