# Activity feed (Notchset): prompt.md (v2.0.0)

- id: `activity-feed` · version 2.0.0 · block · free
- category: Data
- build: one set of files for every shadcn style
- install: `npx shadcn@latest add https://notchset.dev/r/activity-feed.json`
- npm dependencies: lucide-react@^1
- registry dependencies: utils, https://notchset.dev/r/notchset-foundation.json, @notchset/tabs
- docs: https://notchset.dev/blocks/activity-feed
- The install command carries everything this item needs (files, CSS, tokens, npm and registry dependencies). Prefer it to copying source by hand.

What happened on a record, newest first and grouped by day: who did it, what, and the time, with emails and notes carrying their words. Tabs filter by kind with counts; older entries wait behind one honest line..

## Build it
- Stack: React 18.3 or 19, TypeScript, Tailwind CSS v4 utility classes on the foundation's roles, a components.json (imports use its aliases).
- Packages: `lucide-react@^1`.
- Files: `components/ui/notchset/blocks/activity-feed.tsx`.
- Registry dependencies, installed with it automatically: shadcn `utils` (cn), `notchset-foundation`, `tabs`.
- Builds: one set of files, the same for every shadcn style.
- Exports to keep: `ActivityFeed`, and every exported type.
- CSS: the install adds the notchset foundation (its roles, keyframes and motion switch, reading your shadcn tokens for colour) to your global stylesheet once. Nothing to import by hand.
- Re-running `add` (or `--overwrite`) re-applies those rules: put overrides in your own CSS, never in the installed rules.
- Colours: every part reads the foundation's roles (`--ns-canvas`, `--ns-ink`, `--ns-line`, `--ns-signal` …), which read your shadcn tokens (`--background`, `--foreground`, `--border`, `--destructive` …), plus the optional `--success` and `--warning`. Retheme on `:root` or any container; never add Tailwind colour classes inside the component.
- This item reads `--ns-ease`, `--ns-hover`, `--ns-ink`, `--ns-ink-2`, `--ns-ink-3`, `--ns-line`, `--ns-line-soft`, `--ns-radius`, `--ns-signal`, `--ns-text-body`, `--ns-text-meta`, `--ns-text-small`, `--ns-time-page`, `--ns-weight-medium`, `--ns-weight-regular`.
- Retune it (on any ancestor) with the foundation's roles and hooks: `--ns-bad`, `--ns-bad-ink`, `--ns-band`, `--ns-band-edge`, `--ns-band-grade`, `--ns-band-optimal`, `--ns-beat`, `--ns-bezel`, `--ns-canvas`, `--ns-cat-1`, `--ns-cat-2`, `--ns-cat-3`, `--ns-cat-4`, `--ns-cat-5`, `--ns-cat-6`, `--ns-check`, `--ns-chip`, `--ns-control`, `--ns-control-pad`, `--ns-control-sm`, `--ns-deep`, `--ns-deep-ink`, `--ns-deep-ink-2`, `--ns-deep-line`, `--ns-dialog`, `--ns-dialog-lg`, `--ns-dialog-sm`, `--ns-ease`, `--ns-ease-in`, `--ns-ease-panel`, `--ns-ease-pop`, `--ns-field`, `--ns-flood-arc`, `--ns-flood-aurora`, `--ns-flood-behind-1`, `--ns-flood-behind-2`, `--ns-flood-bloom`, `--ns-flood-deep`, `--ns-flood-dial-bloom`, `--ns-flood-glass`, `--ns-flood-grain`, `--ns-flood-image`, `--ns-flood-ink`, `--ns-flood-ink-low`, `--ns-flood-light`, `--ns-flood-mid`, `--ns-flood-pale`, `--ns-flood-pane`, `--ns-flood-pane-edge`, `--ns-flood-pill-ink`, `--ns-flood-ribbon`, `--ns-flood-ribbon-core`, `--ns-flood-shadow`, `--ns-flood-sheen`, `--ns-flood-wash`, `--ns-font-body`, `--ns-font-display`, `--ns-font-mono`, `--ns-font-script`, `--ns-glass`, `--ns-glass-blur`, `--ns-glass-shadow`, `--ns-glow`, `--ns-grain`, `--ns-gutter`, `--ns-header`, `--ns-heat`, `--ns-hover`, `--ns-ink`, `--ns-ink-2`, `--ns-ink-3`, `--ns-ink-4`, `--ns-leading`, `--ns-lift`, `--ns-light-1`, `--ns-light-2`, `--ns-light-3`, `--ns-light-spread`, `--ns-light-strength`, `--ns-line`, `--ns-line-soft`, `--ns-lit-edge`, `--ns-menu-dy`, `--ns-menu-row`, `--ns-mesh`, `--ns-mesh-frost`, `--ns-ok`, `--ns-ok-ink`, `--ns-orb-body`, `--ns-orb-cool`, `--ns-orb-core`, `--ns-orb-dawn`, `--ns-orb-deep`, `--ns-orb-edge`, `--ns-orb-grain`, `--ns-orb-ground`, `--ns-orb-halo`, `--ns-orb-inner`, `--ns-orb-key`, `--ns-orb-lift`, `--ns-orb-limb`, `--ns-orb-limb-from`, `--ns-orb-rim`, `--ns-orb-skin-hi`, `--ns-orb-skin-lo`, `--ns-orb-skin-mid`, `--ns-orb-warm`, `--ns-panel`, `--ns-panel-w`, `--ns-prism-edge`, `--ns-prism-glint`, `--ns-prism-sheen`, `--ns-prism-tint`, `--ns-pulse`, `--ns-radius`, `--ns-radius-card`, `--ns-radius-full`, `--ns-radius-lg`, `--ns-radius-sm`, `--ns-radius-xl`, `--ns-raised`, `--ns-range`, `--ns-row`, `--ns-row-compact`, `--ns-segment`, `--ns-selected`, `--ns-series`, `--ns-series-core`, `--ns-series-lilac`, `--ns-series-tint`, `--ns-shadow-dialog`, `--ns-shadow-float`, `--ns-shadow-panel`, `--ns-sheet`, `--ns-sheet-bottom`, `--ns-side`, `--ns-signal`, `--ns-sleep-awake`, `--ns-sleep-deep`, `--ns-sleep-light`, `--ns-sleep-rem`, `--ns-space-1`, `--ns-space-2`, `--ns-space-3`, `--ns-space-4`, `--ns-space-5`, `--ns-space-6`, `--ns-space-8`, `--ns-space-section`, `--ns-stack-on`, `--ns-standing-critical`, `--ns-standing-in`, `--ns-standing-out`, `--ns-state-doing`, `--ns-state-done`, `--ns-state-review`, `--ns-state-todo`, `--ns-switch-h`, `--ns-switch-w`, `--ns-text-body`, `--ns-text-control`, `--ns-text-display`, `--ns-text-figure`, `--ns-text-headline`, `--ns-text-hero`, `--ns-text-lede`, `--ns-text-meta`, `--ns-text-page`, `--ns-text-record`, `--ns-text-small`, `--ns-text-strong`, `--ns-text-sub`, `--ns-text-title`, `--ns-tile-shadow`, `--ns-time-born`, `--ns-time-color`, `--ns-time-dialog`, `--ns-time-menu`, `--ns-time-page`, `--ns-time-panel`, `--ns-time-toast`, `--ns-tint`, `--ns-tint-ink`, `--ns-toast-bottom`, `--ns-toast-left`, `--ns-touch`, `--ns-tracking-display`, `--ns-tracking-headline`, `--ns-warn`, `--ns-warn-ink`, `--ns-wash-clay`, `--ns-wash-dusk`, `--ns-wash-graphite`, `--ns-wash-ink`, `--ns-wash-sage`, `--ns-wash-sand`, `--ns-weight-light`, `--ns-weight-medium`, `--ns-weight-regular`, `--ns-weight-strong`, `--ns-well`.
- Never add Tailwind colour classes inside the component.

```tsx
import { ActivityFeed, type FeedItem } from "@/components/ui/notchset/blocks/activity-feed";
```

## Parts
- A single export that takes props.

## Match the original
- Read `components/ui/notchset/blocks/activity-feed.tsx` as the reference implementation before changing or recreating anything, and match it: sizes, colours per theme, motion timings, copy and behaviour.
- If you deviate (a prop you can't honour, a style you changed, a dependency you swapped), say so in your reply, part by part.
- Keep the accessibility contract, the keyboard map and the motion levels listed below.

## Use it when

### Not when

## Built from
- tabs (`tabs`), installed with it: reuse it, don't rebuild it

## Mistakes
- Recreating the component instead of installing it

## Usage

```tsx
"use client";
import * as React from "react";
import { Mail, Phone, Video } from "lucide-react";
import { ActivityFeed, type FeedItem } from "@/components/ui/notchset/blocks/activity-feed";

const FEED: (FeedItem & { kind: "email" | "call" | "meeting" })[] = [
  { id: "a1", kind: "email", icon: <Mail />, day: "Today", time: "09:40", who: "Ana Ruiz", text: "Sent the revised pricing to Kevin Ito", detail: "Two changes left: liability cap and the EU data clause." },
  { id: "a2", kind: "call", icon: <Phone />, day: "Today", time: "08:15", who: "Marcus Bell", text: "Call with Kevin Ito · 18 min" },
  { id: "a3", kind: "call", icon: <Phone />, day: "Yesterday", time: "16:05", who: "Marcus Bell", text: "Called Priya Shah about the budget", tag: "Voicemail" },
  { id: "a4", kind: "meeting", icon: <Video />, day: "Oct 16", time: "15:30", who: "Ana Ruiz", text: "Demo with the security team" },
];

export default function ActivityFeedDemo() {
  const [filter, setFilter] = React.useState<"all" | "email" | "call">("all");
  const count = (k: string) => FEED.filter((f) => f.kind === k).length;
  return (
    <ActivityFeed
      items={FEED.filter((f) => filter === "all" || f.kind === filter)}
      filters={[
        { value: "all", label: "Everything", count: FEED.length },
        { value: "email", label: "Emails", count: count("email") },
        { value: "call", label: "Calls", count: count("call") },
      ]}
      filter={filter}
      onFilterChange={setFilter}
      empty="Nothing logged yet"
      className="w-full max-w-[640px]"
    />
  );
}
```

## Props

| Prop | Type | Default | What it does |
|---|---|---|---|
| `items` | `FeedItem[]` |  | Required. |
| `filters` | `FeedFilter<F>[]` |  | Required. |
| `filter` | `F` |  | Required. |
| `onFilterChange` | `(f: F) => void` |  | Required. |
| `composer` | `React.ReactNode` |  | Between the filter tabs and the entries: the composer. |
| `empty` | `string` |  | Required. |
| `older` | `{ label: string; hint: string; shown: boolean; onToggle: () => void }` |  |  |

Full docs: https://notchset.dev/blocks/activity-feed

## Customising
- Colours: every part reads the foundation's roles (`--ns-canvas`, `--ns-ink`, `--ns-line`, `--ns-signal` …), which read your shadcn tokens (`--background`, `--foreground`, `--border`, `--destructive` …), plus the optional `--success` and `--warning`. Retheme on `:root` or any container; never add Tailwind colour classes inside the component.
- Dark mode follows the `.dark` class or `data-theme="dark"` on an ancestor (the shadcn and next-themes conventions).
- Update later: Commit or stash local changes first (or copy the files), so the update can be undone. Read https://notchset.dev/r/changelog.json for the new versions: a major version, an entry marked breaking or a merge says what to change. Then re-run the install with `--overwrite`, on a branch. It replaces the component's files, the shared helper files they import, and the item's CSS rules in the global stylesheet, so review the whole diff (components, shared files, CSS), re-apply your own edits, and run the app's typecheck, tests and build.

## Accessibility contract (preserve when editing)

## Install

```bash
npx shadcn@latest add https://notchset.dev/r/activity-feed.json
```

Or add the `@notchset` registry to components.json and run `npx shadcn@latest add @notchset/activity-feed`. Every components.json style gets the same files.

## Continue the workflow

- [Email preview](https://notchset.dev/blocks/email-preview)
- [Thread list](https://notchset.dev/blocks/thread-list)
- [Email message](https://notchset.dev/blocks/email-message)

## Source

### components/ui/notchset/blocks/activity-feed.tsx

```tsx
// Notchset activity-feed 2.0.0 · https://notchset.dev/changelog
"use client";
import * as React from "react";
import { ChevronDown, ChevronUp } from "lucide-react";
import { cn } from "@/lib/utils";
import { Tabs } from "@/components/ui/notchset/tabs";

/* useLayoutEffect warns during server rendering on React 18; the effect only measures, so the server can skip it. */
const useIsomorphicLayoutEffect = typeof window === "undefined" ? React.useEffect : React.useLayoutEffect;

/*
 * Activity feed (block 24): what happened on a record, newest first, grouped by day ("Upcoming", "Today",
 * "Oct 16"). Each entry is an icon for its kind, who did it, what, and the time; an email or a note carries
 * its words in a card, and a `tag` says in one quiet word how it went. Tabs filter by kind with counts. The feed opens on what's current; anything older waits
 * behind one honest line that says how much and how far back. A fresh entry rises in once.
 */
type FeedItem = { id: string; icon: React.ReactNode; day: string; time: string; who?: string | undefined; text: React.ReactNode; detail?: React.ReactNode; fresh?: boolean | undefined; upcoming?: boolean | undefined;
  /** One quiet word after the entry ("Voicemail"): how it went, never a second sentence. */
  tag?: string | undefined };
type FeedFilter<F extends string> = { value: F; label: string; count: number };
type ActivityFeedProps<F extends string> = {
  items: FeedItem[];
  filters: FeedFilter<F>[];
  filter: F;
  onFilterChange: (f: F) => void;
  /** Between the filter tabs and the entries: the composer. */
  composer?: React.ReactNode;
  empty: string;
  older?: { label: string; hint: string; shown: boolean; onToggle: () => void } | undefined;
  className?: string | undefined;
};

function ActivityFeed<F extends string>({ items, filters, filter, onFilterChange, composer, empty, older, className }: ActivityFeedProps<F>) {
  /*
   * The tabs stay where they are when a filter shows fewer entries: the list keeps the tallest height it has had, so a
   * block centred or bottom-aligned by its host never slides. A change of filter keeps the height; an entry really
   * removed under the same filter lets it settle (the box measures itself, then rests on what it measured).
   */
  const [peak, setPeak] = React.useState(0);
  const list = React.useRef<HTMLOListElement>(null);
  const was = React.useRef({ filter, height: 0 });
  useIsomorphicLayoutEffect(() => {
    const el = list.current;
    if (el) el.style.minHeight = "";
    const h = el?.offsetHeight ?? 0;
    if (el && peak) el.style.minHeight = `${peak}px`;
    const same = was.current.filter === filter;
    setPeak((p) => (h > p || (same && h < was.current.height) ? h : p));
    was.current = { filter, height: h };
    // eslint-disable-next-line react-hooks/exhaustive-deps -- peak is read to restore the box, never a trigger
  }, [items, filter]);
  return (
    <section data-slot="activity-feed" aria-label="Activity" className={cn("flex min-w-0 flex-col gap-4", className)}>
      <div className="border-b border-[var(--ns-line-soft)] pb-2.5">
        <Tabs label="Activity kinds" value={filter} onValueChange={onFilterChange} tabs={filters} />
      </div>
      {composer}
      <ol ref={list} style={{ minHeight: peak || undefined }} className="m-0 flex list-none flex-col p-0">
        {items.length === 0 && <li className="py-2.5 text-[length:var(--ns-text-small)] text-[var(--ns-ink-3)]">{empty}</li>}
        {items.map((a, i) => {
          const head = a.day !== items[i - 1]?.day;
          return (
            <li key={a.id} className={cn(a.fresh && "[animation:ns-rise_var(--ns-time-page)_var(--ns-ease)]")}>
              {head && <div className="pt-3 pb-2 text-[length:var(--ns-text-meta)] font-[number:var(--ns-weight-medium)] text-[var(--ns-ink-3)] first:pt-1">{a.day}</div>}
              <div className="grid grid-cols-[28px_minmax(0,1fr)_auto] items-start gap-x-3 py-1.5">
                <span className={cn("grid size-7 place-items-center rounded-[8px] text-[var(--ns-ink-2)] shadow-[inset_0_0_0_1px_var(--ns-line)] [&_svg]:size-3.5", a.upcoming && "border border-dashed border-[var(--ns-line)] shadow-none")}>{a.icon}</span>
                <div className="min-w-0 pt-[5px] text-[length:var(--ns-text-body)] leading-[1.45] text-[var(--ns-ink-2)] [overflow-wrap:anywhere]">
                  {a.who && <b className="font-[number:var(--ns-weight-medium)] text-[var(--ns-ink)]">{a.who} · </b>}
                  {a.text}
                  {a.tag && <span className="ml-2 inline-flex h-5 items-center rounded-[5px] px-1.5 align-[1px] text-[length:var(--ns-text-meta)] leading-none whitespace-nowrap text-[var(--ns-ink-3)] shadow-[inset_0_0_0_1px_var(--ns-line)]">{a.tag}</span>}
                  {a.detail && <div className="mt-2 max-w-[64ch] rounded-[var(--ns-radius)] px-3 py-2.5 text-[var(--ns-ink)] shadow-[inset_0_0_0_1px_var(--ns-line)] whitespace-pre-wrap">{a.detail}</div>}
                </div>
                <span className="pt-[5px] text-[length:var(--ns-text-meta)] whitespace-nowrap text-[var(--ns-ink-3)] tabular-nums">{a.time}</span>
              </div>
            </li>
          );
        })}
      </ol>
      {older && (
        <button
          type="button"
          aria-expanded={older.shown}
          onClick={older.onToggle}
          className="ml-10 inline-flex h-8 cursor-pointer items-center gap-2 self-start rounded-[var(--ns-radius)] px-3 text-[length:var(--ns-text-small)] font-[number:var(--ns-weight-medium)] text-[var(--ns-ink-2)] shadow-[inset_0_0_0_1px_var(--ns-line)] outline-hidden hover:bg-[var(--ns-hover)] hover:text-[var(--ns-ink)] focus-visible:outline-2 focus-visible:outline-[var(--ns-signal)] max-[600px]:ml-0 [&_svg]:size-3.5"
        >
          {older.shown ? <ChevronUp aria-hidden /> : <ChevronDown aria-hidden />}
          {older.label}
          <span className="font-[number:var(--ns-weight-regular)] text-[var(--ns-ink-3)] max-[600px]:hidden">{older.hint}</span>
        </button>
      )}
    </section>
  );
}

export { ActivityFeed, type ActivityFeedProps, type FeedItem };
```

The foundation (the tokens listed above, keyframes and motion levels) installs once with the first component; its CSS is public at https://notchset.dev/r/notchset-foundation.json.