andyearnshaw/Intl.js

Health v2 · maintenance only

Flags: archived no_license

Adoption not part of the score

1691 stars · 211 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

Intl.js is a compatibility polyfill implementing the ECMAScript Internationalization API (ECMA-402) for JavaScript environments that lack native support, such as legacy browsers and older Node.js runtimes. It provides locale-aware formatting and comparison methods per the specification, loading locale data as needed.

Use cases

• add Intl API support to legacy browsers that lack it
• polyfill internationalization APIs in old Node.js versions
• load extra locale data for Node apps that only ship English by default
• serve the Intl polyfill conditionally via a CDN polyfill service
• format dates, numbers, and collate strings per ECMA-402 in unsupported environments

When to choose

• you must support legacy browsers or old Node.js runtimes without native Intl
• you need a spec-compliant ECMA-402 fallback with per-locale data loading
• you maintain an older codebase already depending on this polyfill

When to avoid

• you target modern browsers or Node.js 12+, which have native Intl support
• you need an actively maintained library with security updates
• you want full ICU coverage or newer ECMA-402 features like Intl.RelativeTimeFormat

Facets

library · maturity abandoned

internationalization sdk web-development frontend developer-tools browser cross-platform polyfill ecma-402 intl i18n legacy-browser-support unmaintained localization nodejs

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