); }), // b follows brushKey. // eslint-disable-next-line -- (Beautiful UI's lint: react-hooks/exhaustive-deps) [customers, Lay, hidden, phase, brushKey, W, quiet, plans], ); // --- lanes ------------------------------------------------------------------------------------- const laneName = (k: string) => (group === "all" ? L.allLane : group === "plan" ? (plans.find((p) => p.key === k)?.label ?? k) : k || L.noRegion); const selTotal = selected.reduce((a, i) => a + revenueOf(inBounds(customers, i)), 0); const ticks = (metric.ticks ?? []).map((t) => ({ x: Lay.s.f(t.value), label: t.label })); // --- tooltip ----------------------------------------------------------------------------------- let tip: React.ReactNode = null; let tipAt = { x: 0, y: 0 }; const hovered = hover !== null && !draft ? customers[hover] : undefined; if (hover !== null && hovered) { const c = hovered; const p = inBounds(Lay.pos, hover); tipAt = { x: p.x, y: p.y }; const peers = customers.filter((o) => o.plan === c.plan && Number.isFinite(valueOf(o, metric.key))).sort((x, y) => valueOf(y, metric.key) - valueOf(x, metric.key)); const pct = Math.max(1, Math.round(((peers.indexOf(c) + 1) / peers.length) * 100)); const outside = Lay.s.outside(valueOf(c, metric.key)); const planLabel = plans[planIndex.get(c.plan) ?? 0]?.label ?? c.plan; tip = ( <>

{c.name || c.id}

{planLabel} {c.region ? ` · ${c.region}` : ""}

{metrics.map((mm) => (
{mm.label} {Number.isFinite(valueOf(c, mm.key)) ? swarmFormat({ ...mm, format: { ...mm.format, notation: "standard" } }, valueOf(c, mm.key)) : "—"}
))}
{fillT(L.topPercent, { n: pct, plan: planLabel, metric: metric.label })} {outside && ( <>
{outside === "nonPositive" ? L.outsideNonPositive : outside === "below" ? L.outsideBelow : L.outsideAbove} )}
); } const plotLabel = b ? fillT(L.plotRange, { n: order.length, metric: metric.label, from: fmt(Lay.s.inv(b[0])), to: fmt(Lay.s.inv(b[1])) }) : fillT(L.plot, { n: order.length, metric: metric.label }); return (
{ if (!drag.current) { setHoverId(null); showCross(null); } }} onBlur={() => setHoverId(null)} > {ticks.map((t, i) => (

{t.label}
))}
{Lay.lanes.map((ln) => { const v = ln.values; const has = v.length > 2 && phase !== "intro"; const a = has ? Lay.s.f(quantile(v, 0.25)) : W / 2; const z = has ? Lay.s.f(quantile(v, 0.75)) : W / 2; const md = has ? Lay.s.f(quantile(v, 0.5)) : W / 2; const c = group === "plan" ? colorOf(ln.key) : "var(--cs-neutral)"; return (

{has ? `${fmt(quantile(v, 0.25))}–${fmt(quantile(v, 0.75))}` : ""}
); })} {tiles} {b && (
{fmt(Lay.s.inv(b[0]))} {fmt(Lay.s.inv(b[1]))}
)}

{Lay.lanes.map((ln) => { const inLane = ln.members.filter((k) => selected.includes(k)); const rev = inLane.reduce((a, k) => a + revenueOf(inBounds(customers, k)), 0); return (

{laneName(ln.key)} {inLane.length} {inLane.length === 1 ? L.customer : L.customers}
{revenueFormat(rev)} {selTotal ? Math.round((rev / selTotal) * 100) : 0}%
); })} {hover !== null && tip &&
} {tip}
); } /** The metric list, for custom tooltips and tables. */ export function useCustomerSwarmMetrics() { return useCustomerSwarm().metrics; } // --------------------------------------------------------------------------------------------- // The other parts // --------------------------------------------------------------------------------------------- export function CustomerSwarmMetrics(props: Omit, "value" | "onValueChange" | "defaultValue">) { const { metrics, metric, setMetric, L } = useCustomerSwarm(); return ( {metrics.map((m) => ( {m.label} ))} ); } export function CustomerSwarmGroups(props: Omit, "value" | "onValueChange" | "defaultValue">) { const { group, setGroup, L } = useCustomerSwarm(); return ( setGroup(v as SwarmGroup)} aria-label={L.groupTabs} {...props}> {L.groupAll} {L.groupPlan} {L.groupRegion} ); } /** The sentence the selection tells: which plan carries more revenue than its share of customers. */ export function CustomerSwarmInsight(props: React.ComponentProps<"p">) { const { insight } = useCustomerSwarm(); return {insight}; } /** Plan chips with counts; a press hides or shows the plan (the last one can't hide). */ export function CustomerSwarmLegend({ className, ...props }: React.ComponentProps<"div">) { const { plans, hidden, togglePlan, customers, selected, L } = useCustomerSwarm(); const shown = plans.filter((p) => !hidden.has(p.key)).length; return (
{plans.map((p) => { const on = !hidden.has(p.key); const n = selected.filter((i) => inBounds(customers, i).plan === p.key).length; return ( ); })}
); } /** "86 customers · $214K MRR" for the view, rolling. */ export function CustomerSwarmSummary({ className, ...props }: React.ComponentProps<"div">) { const { selected, customers, revenueOf, revenueFormat, L, metrics, revenueKey } = useCustomerSwarm(); const total = selected.reduce((a, i) => a + revenueOf(inBounds(customers, i)), 0); const revLabel = metrics.find((m) => m.key === revenueKey)?.label ?? ""; return (
{String(selected.length)} {selected.length === 1 ? L.customer : L.customers} · {revenueFormat(total)} {revLabel}
); } /** Customers and revenue by plan, as two split bars. */ export function CustomerSwarmSplit({ className, ...props }: React.ComponentProps<"div">) { const { plans, selected, customers, revenueOf, L } = useCustomerSwarm(); const cnt = plans.map((p) => selected.filter((i) => inBounds(customers, i).plan === p.key).length); const rev = plans.map((p) => selected.filter((i) => inBounds(customers, i).plan === p.key).reduce((a, i) => a + revenueOf(inBounds(customers, i)), 0)); const rows = [ { key: "c", label: L.splitCustomers, vals: cnt, total: selected.length }, { key: "r", label: L.splitRevenue, vals: rev, total: rev.reduce((a, b) => a + b, 0) }, ]; return (
{rows.map((row) => { const segs = row.vals.map((v, i) => { const p = row.total ? v / row.total : 0; return { i, p, txt: `${Math.round(p * 100)}%` }; }); return ( {row.label}
`${inBounds(plans, s.i).label} ${s.txt}`).join(", ")}`} className={`lumen-cs-bar`}> {segs.map((s) => (
0.001 ? 7 : 0}px` } as React.CSSProperties}> 0.06 ? 1 : 0 }}> {s.txt}
))}
); })}
); } /** The bracket key, the hint, the scale and, with a range, Clear. */ export function CustomerSwarmKey({ className, ...props }: React.ComponentProps<"div">) { const { selection, commit, metric, L } = useCustomerSwarm(); return (

{L.bracketKey} {selection ? L.hintClear : L.hintDrag}

{metric.scale === "log" ? L.logScale : L.linearScale} {selection && ( )}

); } /** Every customer with plan, region and metrics (a "View as table" disclosure at the sample's size). */ export function CustomerSwarmTable(props: Omit, "caption" | "columns" | "rows">) { const { customers, plans, metrics, L, title } = useCustomerSwarm(); // Built once per data change, not on every hover. const { columns, rows } = React.useMemo(() => { const label = new Map(plans.map((p) => [p.key, p.label])); const cell = (c: SwarmCustomer, m: SwarmMetric) => (Number.isFinite(valueOf(c, m.key)) ? swarmFormat({ ...m, format: { ...m.format, notation: "standard" } }, valueOf(c, m.key)) : "—"); return { columns: [L.tableCustomer, L.tablePlan, L.tableRegion, ...metrics.map((m) => m.label)], rows: customers.map((c) => [c.name || c.id, label.get(c.plan) ?? c.plan, c.region || L.noRegion, ...metrics.map((m) => cell(c, m))]), }; }, [customers, plans, metrics, L]); return ; } /** Each lane's count, middle half, median and revenue for the current metric: what the brackets show, for screen readers. */ export function CustomerSwarmLaneTable(props: Omit, "caption" | "columns" | "rows">) { const { layout, group, plans, metric, customers, selected, revenueOf, revenueFormat, L, title } = useCustomerSwarm(); const name = (k: string) => (group === "all" ? L.allLane : group === "plan" ? (plans.find((p) => p.key === k)?.label ?? k) : k || L.noRegion); const fmt = (v: number) => swarmFormat(metric, v); const rows = layout.lanes.map((ln) => { const inLane = ln.members.filter((k) => selected.includes(k)); const v = ln.values; return [name(ln.key), inLane.length, v.length ? fmt(quantile(v, 0.25)) : "—", v.length ? fmt(quantile(v, 0.5)) : "—", v.length ? fmt(quantile(v, 0.75)) : "—", revenueFormat(inLane.reduce((a, k) => a + revenueOf(inBounds(customers, k)), 0))]; }); return ; } // --------------------------------------------------------------------------------------------- // The recipe: the finished card, on the sample data. Copy it and rearrange. // --------------------------------------------------------------------------------------------- export function CustomerSwarmCard({ customers = sampleSwarmCustomers, config, metrics, regions, eyebrow, title, className, ...props }: Partial & { eyebrow?: string | undefined }) { // The sample's plans, metrics, regions and words apply only to the sample, never to your data. const sample = customers === sampleSwarmCustomers; title ??= sample ? "Where Lumen's revenue comes from" : "Customers"; eyebrow ??= sample ? "Customer swarm · Lumen" : undefined; return (
{eyebrow && {eyebrow}} {title}

); } export type { SwarmCustomer, SwarmMetric, SwarmGroup, SwarmSelection, CustomerSwarmLabels }; ``` ### lib/beautiful-ui/lumen/customer-swarm-model.ts ```tsx import { formatStatValue, type StatFormat } from "@/lib/beautiful-ui/lumen/stat-format"; /* * Customer Swarm's model: every customer as a tile on one metric's axis, binned and stacked into * lanes (all, by plan, by region), the middle half and median per lane, and the insight sentence. * Plain data in and out (no React, no functions in the data), so a Server Component can prepare it. */ /** A customer. `plan` is a config key (its label and colour); metrics are numeric fields named by the metrics' keys. */ export type SwarmCustomer = { id: string; name: string; plan: string; region?: string } & Record; export type SwarmMetric = { /** The customer field it reads, e.g. "mrr". */ key: string; /** Tab label, e.g. "MRR". */ label: string; scale?: "log" | "linear"; /** Axis range; log scales need a positive minimum. */ domain: [number, number]; /** Gridlines. */ ticks?: { value: number; label: string }[]; /** How values read on the axis, brush and tooltip. */ format?: StatFormat; }; export type SwarmGroup = "all" | "plan" | "region"; export type SwarmSelection = [number, number]; // Geometry, px (the design's). export const SWARM = { PH: 348, MIN_PH: 180, MIN_LANE: 72, AXIS_H: 30, PADL: 20, PADR: 20, BW: 7, TH: 4.5, PITCH: 5.6, TOPPAD: 30, BOTPAD: 24 } as const; const fin = (v: unknown): v is number => typeof v === "number" && Number.isFinite(v); export const valueOf = (c: SwarmCustomer, key: string) => { const v = c[key]; return fin(v) ? v : Number.NaN; }; export type SwarmOutside = "below" | "above" | "nonPositive" | null; /** The axis for a metric at a plot width: `f` value → x px, `inv` x px → value, `outside` where a value falls. */ export function swarmScale(m: SwarmMetric, W: number) { const log = (m.scale ?? "linear") === "log"; // A usable domain whatever comes in: finite, ordered, non-degenerate, positive on a log scale. let [a, b] = m.domain.map(Number) as [number, number]; if (!Number.isFinite(a) || !Number.isFinite(b)) [a, b] = log ? [1, 10] : [0, 1]; if (a > b) [a, b] = [b, a]; if (log && !(b > 0)) [a, b] = [1, 10]; if (log && !(a > 0)) a = Math.min(1, b / 10); if (a === b) b = log ? a * 10 : a + 1; const span = Math.max(1, W - SWARM.PADL - SWARM.PADR); const la = Math.log(a); const lb = Math.log(b); const t = (v: number) => { if (!Number.isFinite(v) || (log && !(v > 0))) return 0; const r = log ? (Math.log(v) - la) / (lb - la) : (v - a) / (b - a); return Math.max(0, Math.min(1, r)); }; const inv = (x: number) => { const r = Math.max(0, Math.min(1, (x - SWARM.PADL) / span)); return log ? Math.exp(la + r * (lb - la)) : a + r * (b - a); }; const outside = (v: number): SwarmOutside => (log && !(v > 0) ? "nonPositive" : v < a ? "below" : v > b ? "above" : null); return { f: (v: number) => SWARM.PADL + t(v) * span, inv, outside, log }; } /** The p-quantile of an ascending, non-empty list (NaN for an empty one). */ export const quantile = (sorted: readonly number[], p: number) => sorted[Math.min(sorted.length - 1, Math.max(0, Math.round((sorted.length - 1) * p)))] ?? NaN; export type SwarmPos = { x: number; y: number; r: number; gone?: boolean }; export type SwarmLane = { key: string; top: number; base: number; members: number[]; values: number[] }; /** The lanes for a grouping: one "all" lane, one per plan (config order), or one per region (data order). */ export function swarmLaneKeys(customers: readonly SwarmCustomer[], group: SwarmGroup, plans: readonly string[], regions?: readonly string[]) { if (group === "all") return ["all"]; if (group === "plan") return [...plans]; // The given order first, then any region the data has that it misses ("" for customers without one). const seen = new Set(regions ?? []); const out = [...(regions ?? [])]; for (const c of customers) { const r = c.region ?? ""; if (!seen.has(r)) { seen.add(r); out.push(r); } } return out; } /** Tile positions and lanes for one metric, grouping, width and plot height. Hidden plans' tiles are `gone`. */ export function swarmLayout(customers: readonly SwarmCustomer[], m: SwarmMetric, laneKeys: readonly string[], group: SwarmGroup, plans: readonly string[], hidden: ReadonlySet, W: number, PH: number = SWARM.PH) { const s = swarmScale(m, W); const nL = Math.max(1, laneKeys.length); // Each lane keeps room for its label, a few rows and its bracket: many lanes grow the plot. const lh = Math.max(PH / nL, SWARM.MIN_LANE); PH = lh * nL; const laneOf = (c: SwarmCustomer) => (group === "all" ? 0 : laneKeys.indexOf(group === "plan" ? c.plan : (c.region ?? ""))); const planRank = new Map(plans.map((p, i) => [p, i])); // Indexes into customers, read safely (noUncheckedIndexedAccess); every index here is in range. const valAt = (i: number) => { const c = customers[i]; return c ? valueOf(c, m.key) : Number.NaN; }; const rankAt = (i: number) => { const c = customers[i]; return (c && planRank.get(c.plan)) ?? 99; }; const pos: SwarmPos[] = new Array(customers.length); const lanes: SwarmLane[] = laneKeys.map((key, L) => { const top = lh * L; const base = top + lh - SWARM.BOTPAD; const members = customers.flatMap((c, i) => (laneOf(c) === L && !hidden.has(c.plan) && Number.isFinite(valueOf(c, m.key)) ? [i] : [])); const bins = new Map(); for (const i of members) { const b = Math.round((s.f(valAt(i)) - SWARM.PADL) / SWARM.BW); bins.set(b, [...(bins.get(b) ?? []), i]); } let maxN = 1; for (const v of bins.values()) maxN = Math.max(maxN, v.length); const pitch = Math.max(0.5, Math.min(SWARM.PITCH, (lh - SWARM.BOTPAD - SWARM.TOPPAD) / maxN)); for (const [b, idx] of bins) idx .sort((x, y) => rankAt(x) - rankAt(y) || valAt(y) - valAt(x)) .forEach((i, r) => (pos[i] = { x: SWARM.PADL + b * SWARM.BW, y: base - 3 - r * pitch, r })); const values = members.map(valAt).sort((x, y) => x - y); return { key, top, base, members, values }; }); customers.forEach((c, i) => { if (!pos[i]) { const L = laneOf(c); pos[i] = { x: s.f(valueOf(c, m.key)), y: (L >= 0 ? lanes[L]?.base : undefined) ?? PH / 2, r: 0, gone: true }; } }); return { pos, lanes, s, PH }; } /** "$4.2K", "12 seats"… through the metric's StatFormat. */ export const swarmFormat = (m: SwarmMetric, v: number) => formatStatValue(v, m.format ?? {}); // --------------------------------------------------------------------------------------------- // Words: plain strings with {placeholders} // --------------------------------------------------------------------------------------------- export const customerSwarmLabels = { metricTabs: "Metric", groupTabs: "Group by", groupAll: "All", groupPlan: "Plan", groupRegion: "Region", allLane: "All customers", empty: "No customers in this range.", insightOnly: "{plan} only in this view, {n} customers.", insightShare: "{plan} is {customers}% of customers and {revenue}% of revenue.", insightShareRange: "{plan} is {customers}% of customers and {revenue}% of revenue in this range.", customer: "customer", customers: "customers", splitCustomers: "Customers", splitRevenue: "Revenue", topPercent: "Top {n}% of {plan} by {metric}", outsideNonPositive: "0 or less can't sit on a log scale: shown at the left edge", outsideBelow: "Below the axis range: shown at the left edge", outsideAbove: "Above the axis range: shown at the right edge", noRegion: "No region", summaryCaption: "{title}: {metric} by lane, middle half and median.", summaryLane: "Lane", summaryCount: "Customers", summaryLow: "25th percentile", summaryMedian: "Median", summaryHigh: "75th percentile", summaryRevenue: "Revenue", bracketKey: "Middle half of customers · marker is the median", hintClear: "Esc to clear", hintDrag: "Drag to select a range", logScale: "Log scale", linearScale: "Linear scale", clear: "Clear", plot: "{n} customers by {metric}. Arrow keys move between customers, Shift plus arrows selects a range, Escape clears.", plotRange: "{n} customers by {metric}, selected {from} to {to}. Arrow keys move between customers, Shift plus arrows selects a range, Escape clears.", legend: "{plan}, {n} customers, {state}", shown: "shown", hidden: "hidden", tableCaption: "{title}: every customer with plan, region and metrics.", tableCustomer: "Customer", tablePlan: "Plan", tableRegion: "Region", }; export type CustomerSwarmLabels = typeof customerSwarmLabels; /** * The insight: the plan whose share of customers and share of revenue differ most in the view * ("Enterprise is 12% of customers and 64% of revenue."). */ export function swarmInsight(selected: readonly SwarmCustomer[], plans: readonly { key: string; label: string }[], revenueKey: string, inRange: boolean, L: CustomerSwarmLabels = customerSwarmLabels) { if (!selected.length) return L.empty; const rev = (c: SwarmCustomer) => { const v = valueOf(c, revenueKey); return Number.isFinite(v) ? v : 0; }; const total = selected.reduce((a, c) => a + rev(c), 0); let best = -1; let bd = -1; const cnt = plans.map((p) => selected.filter((c) => c.plan === p.key).length); const rv = plans.map((p) => selected.filter((c) => c.plan === p.key).reduce((a, c) => a + rev(c), 0)); plans.forEach((_, i) => { const n = cnt[i] ?? 0; const v = rv[i] ?? 0; if (!n && !v) return; const d = Math.abs(n / selected.length - v / (total || 1)); if (d > bd) { bd = d; best = i; } }); const bestPlan = plans[best]; if (best < 0 || !bestPlan) return L.empty; const cp = Math.round(((cnt[best] ?? 0) / selected.length) * 100); const rp = Math.round(((rv[best] ?? 0) / (total || 1)) * 100); const fill = (t: string, v: Record) => t.replace(/\{(\w+)\}/g, (m, k: string) => (k in v ? String(v[k]) : m)); if (cp === 100) return fill(L.insightOnly, { plan: bestPlan.label, n: selected.length }); return fill(inRange ? L.insightShareRange : L.insightShare, { plan: bestPlan.label, customers: cp, revenue: rp }); } /** A selection with finite ends, low to high, or null. */ export function normalizeSwarmSelection(r: readonly number[] | null | undefined): SwarmSelection | null { if (!r || r.length < 2) return null; const a = Number(r[0]); const b = Number(r[1]); if (!Number.isFinite(a) || !Number.isFinite(b)) return null; return a <= b ? [a, b] : [b, a]; } ``` ### lib/beautiful-ui/lumen/customer-swarm-sample.ts ```tsx import type { ChartConfig } from "@/lib/beautiful-ui/lumen/chart-config"; import type { SwarmCustomer, SwarmMetric } from "@/lib/beautiful-ui/lumen/customer-swarm-model"; /* * Customer Swarm's sample: 300 seeded Lumen customers (35 Enterprise, 79 Mid-market, 186 * Self-serve), the same on the server and in every browser. Only the recipe card and the demo import * it; your own customers never mix with it. */ export const sampleSwarmConfig = { enterprise: { label: "Enterprise", theme: { light: "#6B74F5", dark: "#8B93FF" } }, midMarket: { label: "Mid-market", theme: { light: "#17A673", dark: "#4ADE9B" } }, selfServe: { label: "Self-serve", theme: { light: "#E08A12", dark: "#FFB547" } }, } satisfies ChartConfig; export const sampleSwarmRegions = ["North America", "Europe", "Asia Pacific"]; export const sampleSwarmMetrics: SwarmMetric[] = [ { key: "mrr", label: "MRR", scale: "log", domain: [12, 62000], ticks: [{ value: 100, label: "$100" }, { value: 1000, label: "$1K" }, { value: 10000, label: "$10K" }], format: { style: "currency", currency: "USD" } }, { key: "seats", label: "Seats", scale: "log", domain: [0.8, 3200], ticks: [{ value: 10, label: "10 seats" }, { value: 100, label: "100" }, { value: 1000, label: "1K" }], format: { style: "number" } }, { key: "tenure", label: "Tenure", scale: "linear", domain: [0, 62], ticks: [{ value: 12, label: "1 yr" }, { value: 24, label: "2 yr" }, { value: 36, label: "3 yr" }, { value: 48, label: "4 yr" }], format: { style: "unit", unit: "month", unitDisplay: "long", maximumFractionDigits: 0 } }, ]; export const sampleSwarmCustomers: SwarmCustomer[] = (() => { const shapes: { plan: string; n: number; mrr: [number, number]; seats: [number, number]; tp: number }[] = [ { plan: "enterprise", n: 35, mrr: [7000, 48000], seats: [150, 2400], tp: 0.6 }, { plan: "midMarket", n: 79, mrr: [650, 6500], seats: [12, 180], tp: 0.85 }, { plan: "selfServe", n: 186, mrr: [15, 480], seats: [1, 14], tp: 1.15 }, ]; const PRE = ["North", "Blue", "Lumen", "Atlas", "Kite", "Vanta", "Orbit", "Pine", "Harbor", "Nova", "Quill", "Ember", "Tidal", "Cedar", "Echo", "Fable", "Grove", "Halo", "Iris", "Juniper", "Keel", "Lark", "Mosaic", "Nimbus", "Opal", "Prism", "Quartz", "Ridge", "Sable", "Terra"]; const SUF = ["wind", "labs", "works", "ly", "stack", "forge", "scale", "loop", "field", "base", "cloud", "craft", "point", "path", "mint"]; let a = 7; const R = () => { a |= 0; a = (a + 0x6d2b79f5) | 0; let t = Math.imul(a ^ (a >>> 15), 1 | a); t = (t + Math.imul(t ^ (t >>> 7), 61 | t)) ^ t; return ((t ^ (t >>> 14)) >>> 0) / 4294967296; }; const lg = (lo: number, hi: number, t: number) => Math.exp(Math.log(lo) + (Math.log(hi) - Math.log(lo)) * t); const out: SwarmCustomer[] = []; for (const p of shapes) for (let k = 0; k < p.n; k++) { const t = (R() + R() + R()) / 3; const r = R(); const i = out.length; out.push({ id: `c${i}`, name: `${PRE[(i * 11) % 30] ?? ""}${SUF[(i * 7 + Math.floor(i / 30)) % 15] ?? ""}`, plan: p.plan, region: sampleSwarmRegions[r < 0.43 ? 0 : r < 0.78 ? 1 : 2] ?? "", mrr: Math.round(lg(p.mrr[0], p.mrr[1], t)), seats: Math.max(1, Math.round(lg(p.seats[0], p.seats[1], t * 0.6 + R() * 0.4))), tenure: Math.max(1, Math.round(Math.pow(R(), p.tp) * 60)), }); } return out; })(); ``` ### lib/beautiful-ui/lumen/stat-format.ts ```tsx /* * Lumen Stat's maths: number formats, the change and its tone, and the spark's cells. Plain, * serialisable inputs and no React, so a Server Component can format a KPI and pass the result on. */ /** How a value is written. Plain data, so it crosses the server/client boundary. */ export type StatFormat = { /** * "number" (default) · "currency" · "percent" (a fraction: 0.018 → "1.8%") · "unit" (with * `unit`, e.g. "millisecond") · "duration" (seconds: 252 → "4m 12s"). */ style?: "number" | "currency" | "percent" | "unit" | "duration" | undefined; /** ISO code for "currency". Default "USD". */ currency?: string | undefined; /** An Intl unit for "unit", e.g. "millisecond", "gigabyte". */ unit?: string | undefined; /** How a unit reads: "short" (default: "12 mths"), "long" ("12 months") or "narrow" ("12m"). */ unitDisplay?: "short" | "long" | "narrow" | undefined; /** "compact" (default for currency and numbers of 10,000 and up: "$2.41M", "18.2K") or "standard". */ notation?: "compact" | "standard" | undefined; minimumFractionDigits?: number | undefined; maximumFractionDigits?: number | undefined; /** Default "en-US". */ locale?: string | undefined; }; /** good / bad from the direction of the change and whether up is good; flat when it rounds to zero; none without a comparison. */ export type StatTone = "good" | "bad" | "flat" | "none"; const MINUS = "−"; const isNum = (v: unknown): v is number => typeof v === "number" && Number.isFinite(v); function durationText(sec: number) { const s = Math.round(sec); if (s < 60) return `${s}s`; const m = Math.floor(s / 60); if (m < 60) return `${m}m ${s % 60}s`; const h = Math.floor(m / 60); if (h < 24) return `${h}h ${m % 60}m`; return `${Math.floor(h / 24)}d ${h % 24}h`; } const clampDigits = (n: number | undefined) => (n == null || !Number.isFinite(n) ? undefined : Math.min(20, Math.max(0, Math.round(n)))); function intlOptions(abs: number, f: StatFormat): Intl.NumberFormatOptions { const style = f.style ?? "number"; const compact = f.notation ? f.notation === "compact" : style === "currency" ? abs >= 1000 : style === "number" && abs >= 10000; const opts: Intl.NumberFormatOptions = { style: style === "duration" || style === "number" ? "decimal" : style, notation: compact ? "compact" : "standard" }; if (style === "currency") { opts.currency = f.currency ?? "USD"; opts.currencyDisplay = "narrowSymbol"; } if (style === "unit") { opts.unit = f.unit ?? "percent"; if (f.unitDisplay) opts.unitDisplay = f.unitDisplay; } const min = clampDigits(f.minimumFractionDigits); const maxSet = clampDigits(f.maximumFractionDigits); // The design's precision: compact figures keep three significant digits ("$2.41M", "$612K", "18.2K"). if (compact && min == null && maxSet == null) opts.maximumSignificantDigits = 3; else { const max = Math.max(maxSet ?? (style === "percent" ? 1 : style === "currency" ? (abs < 100 ? 2 : 0) : abs < 10 ? 2 : abs < 100 ? 1 : 0), min ?? 0); opts.maximumFractionDigits = max; opts.minimumFractionDigits = min ?? 0; } return opts; } function intl(abs: number, f: StatFormat, latin = false) { const opts = intlOptions(abs, f); if (latin) opts.numberingSystem = "latn"; try { return new Intl.NumberFormat(f.locale ?? "en-US", opts).format(abs); } catch { // A bad currency, unit or locale never throws in render: the plain number instead. return new Intl.NumberFormat("en-US", { maximumFractionDigits: opts.maximumFractionDigits ?? 2 }).format(abs); } } /** Whether a magnitude shows as zero in this format (checked in Latin digits, whatever the locale's). */ const showsZero = (abs: number, f: StatFormat) => !/[1-9]/.test(f.style === "duration" ? durationText(abs) : intl(abs, f, true)); /** "$2.41M", "8,940", "1.8%", "4m 12s"; "—" when there is no value; a real minus for negatives, never "−0". */ export function formatStatValue(value: number | null | undefined, format: StatFormat = {}) { if (!isNum(value)) return "—"; const abs = Math.abs(value); const s = format.style === "duration" ? durationText(abs) : intl(abs, format); return value < 0 && !showsZero(abs, format) ? MINUS + s : s; } /** The locale's ten digits, 0 to 9 ("٠…٩" for ar-EG), so rolling reels show the same digits as the text. */ export function statDigits(locale?: string): string[] { try { const nf = new Intl.NumberFormat(locale ?? "en-US", { useGrouping: false }); const d = Array.from({ length: 10 }, (_, i) => nf.format(i)); return d.every((x) => Array.from(x).length === 1) ? d : "0123456789".split(""); } catch { return "0123456789".split(""); } } export type StatChange = { tone: StatTone; /** "+10.6%", "−0.3 pts", "−1m 6s", "+$231K"; "—" or "New" without a comparison. */ text: string; /** "up" · "down" · "flat" · "none". */ direction: "up" | "down" | "flat" | "none"; /** value − previous (0 without both). */ difference: number; }; const num = (v: number, locale: string | undefined, digits: number) => { try { return new Intl.NumberFormat(locale ?? "en-US", { minimumFractionDigits: digits, maximumFractionDigits: digits }).format(v); } catch { return v.toFixed(digits); } }; /** * The change and its tone. Percents change in points, durations by the difference, everything * else relatively (by the difference when the previous value is 0). Under 0.05% is flat. Numbers * follow the format's locale. */ export function statChange(value: number | null | undefined, previous: number | null | undefined, options: { format?: StatFormat | undefined; goodDirection?: "up" | "down" | undefined; mode?: "relative" | "absolute" | undefined } = {}): StatChange { const f = options.format ?? {}; if (!isNum(value)) return { tone: "none", text: "—", direction: "none", difference: 0 }; if (!isNum(previous)) return { tone: "none", text: "New", direction: "none", difference: 0 }; const d = value - previous; if (!Number.isFinite(d)) return { tone: "none", text: "—", direction: "none", difference: 0 }; const pct = previous !== 0 ? (d / Math.abs(previous)) * 100 : null; const style = f.style ?? "number"; const relative = (options.mode ?? "relative") === "relative" && pct != null && style !== "percent" && style !== "duration"; const ad = Math.abs(d); const pts = ad * 100; // No change, in the change's own unit: "0%", "0 pts", "0s", "$0". const flatText = relative ? `${num(0, f.locale, 0)}%` : style === "percent" ? `${num(0, f.locale, 0)} pts` : formatStatValue(0, f); const flat: StatChange = { tone: "flat", text: flatText, direction: "flat", difference: d }; if (relative ? Math.abs(pct!) < 0.05 : style === "percent" ? pts < 0.005 : d === 0 || showsZero(ad, f)) return flat; let core: string; if (relative) { const p = Math.abs(pct!); core = `${num(p, f.locale, p >= 1000 ? 0 : 1)}%`; } else if (style === "percent") core = `${num(pts, f.locale, pts < 0.1 ? 2 : 1)} pts`; else core = formatStatValue(ad, f); const up = d > 0; const good = options.goodDirection === "down" ? !up : up; return { tone: good ? "good" : "bad", text: (up ? "+" : MINUS) + core, direction: up ? "up" : "down", difference: d }; } /** * The spark's columns: the last `columns` points, padded on the left with gaps, each as a count of * lit cells (1…rows, the lowest always 1; 0 for a gap). Empty when there is nothing to draw. */ export function statCells(data: readonly (number | null | undefined)[] | undefined, rows = 5, columns = 12): number[] { if (!Array.isArray(data)) return []; const t = data.slice(-columns).map((v) => (isNum(v) ? v : null)); const fin = t.filter((v): v is number => v != null); if (!fin.length) return []; const mn = Math.min(...fin); const mx = Math.max(...fin); const cells = t.map((v) => (v == null ? 0 : 1 + Math.round(((v - mn) / (mx - mn || 1)) * (rows - 1)))); return [...Array(columns - cells.length).fill(0), ...cells]; } ``` ### lib/beautiful-ui/lumen/chart-config.ts ```tsx /* * Lumen Chart's core: shadcn's ChartConfig, its colours as CSS variables, data adapters and the * table policy. Plain data in and out, no React, so a Server Component can prepare a chart. */ /** shadcn's ChartConfig: one entry per series key. Plain data, so it crosses the server/client boundary. */ export type ChartConfig = Record< string, { /** Shown in legends, tooltips and the table. */ label?: string; } & ({ color?: string; theme?: never } | { color?: never; theme: { light: string; dark: string } }) >; // Keys become CSS custom property names and ids go in a selector inside a