@molecule/app-relative-time-react

Auto-generated, AI-first package reference for the molecule.dev ecosystem. It is written to be read by coding agents as much as by people, and is generated from this package's source — edit src/index.ts JSDoc, not this file.

React relative-time formatting.

Exports:

formatRelativeTime(date, now?, locale?) — utility using Intl.RelativeTimeFormat.
<RelativeTime> — live-updating component ("5 minutes ago").

Quick Start

import { RelativeTime, formatRelativeTime } from '@molecule/app-relative-time-react'

// Component — auto-refreshes every minute
;<RelativeTime date="2024-06-01T10:00:00Z" titleLocale="en-US" />

// Utility — one-shot formatting
const label = formatRelativeTime('2024-06-01T10:00:00Z', Date.now(), 'en-US')
// → "5 minutes ago"

Type

feature

Installation

npm install @molecule/app-relative-time-react @molecule/app-react @molecule/app-ui @molecule/app-ui-react react
npm install -D @types/react

API

Interfaces

`RelativeTimeProps`

Props accepted by the {@link RelativeTime} component.

interface RelativeTimeProps {
  /** ISO string, Date, or epoch ms. */
  date: Date | string | number
  /** Locale override. */
  locale?: string
  /** Auto-refresh interval (ms). Defaults to 60_000 (1 min). Set 0 to disable. */
  refreshMs?: number
  /** When provided, renders the absolute date in a `title` attribute for hover tooltip. */
  titleLocale?: string
  /** Extra classes (applies to the surrounding `<time>` element). */
  className?: string
}

Functions

`formatRelativeTime(input, now, locale)`

Formats a date, timestamp, or epoch number as a human-readable relative time string (e.g. "5 minutes ago", "in 3 days") using {@link Intl.RelativeTimeFormat}.

function formatRelativeTime(
  input: string | number | Date,
  now?: number | Date,
  locale?: string,
): string

`RelativeTime(props)`

Live-updating relative time display ("5 minutes ago"). Re-computes on a timer so the text stays accurate as the user leaves the page open.

Pass refreshMs={0} for a one-shot render (cheaper in long lists; the parent can provide a single ticker).

function RelativeTime({
  date,
  locale,
  refreshMs = 60_000,
  titleLocale,
  className,
}: RelativeTimeProps): React.JSX.Element

props — Component props (see {@link RelativeTimeProps}).

Injection Notes

Requirements

Peer dependencies:

@molecule/app-react ^1.0.1
@molecule/app-ui ^1.0.1
@molecule/app-ui-react ^1.0.1
react ^18.0.0 || ^19.0.0

Runtime Dependencies

@molecule/app-react
@molecule/app-ui
@molecule/app-ui-react
react
Zero molecule wiring required — no ClassMap, no i18n provider, no bonds; safe in any React tree.
<RelativeTime> props: date (Date | ISO string | epoch ms), locale?, refreshMs? (default 60000 — pass 0 to disable the per-instance timer, cheaper in long lists), titleLocale? (adds an absolute-date title tooltip), className?.
locale defaults to the runtime's locale, NOT your app's i18n locale — pass the active locale explicitly for consistent localized output.
When Intl.RelativeTimeFormat is unavailable, fallback strings ("just now", "5m ago") are English-only.

`@molecule/app-relative-time-react`

How it works

Reference