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border-radius: 999px; background: var(--bjork-thumb); box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.18), 0 0 0 1px rgba(0, 0, 0, 0.42); } .bjork-range::-moz-range-thumb { width: 16px; height: 8px; border: 0; border-radius: 999px; background: var(--bjork-thumb); box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.18), 0 0 0 1px rgba(0, 0, 0, 0.42); } .bjork-layered-button-accent, .bjork-layered-button-raised { position: relative; isolation: isolate; appearance: none; overflow: hidden; border: 0; border-radius: 13px; box-shadow: inset 0 1px 0 #ffffff38, 0 4px 6px -1px #0000001a, 0 2px 4px -2px #0000001a; transition: filter 150ms ease-out, box-shadow 150ms ease-out; } .bjork-layered-button-accent::after, .bjork-layered-button-raised::after { position: absolute; inset: 0; pointer-events: none; content: ""; border: 1.5px solid transparent; border-radius: inherit; background: linear-gradient(#ffffffb8, #0000003d 41% 75%, #ffffff47) border-box; mix-blend-mode: overlay; -webkit-mask-image: linear-gradient(#000, #000), linear-gradient(#000, #000); mask-image: linear-gradient(#000, #000), linear-gradient(#000, #000); -webkit-mask-clip: padding-box, border-box; mask-clip: padding-box, border-box; -webkit-mask-origin: padding-box, border-box; mask-origin: padding-box, border-box; -webkit-mask-composite: xor; mask-composite: exclude; } .bjork-layered-button-accent { color: oklch(100% 0 0); text-shadow: 0 -1px #00000040; background: radial-gradient(ellipse at -20px top, rgba(255, 255, 255, 0.14), transparent), linear-gradient(180deg, #ec5c13 0%, #ec5c13 62%, color-mix(in oklab, #ec5c13 84%, black 16%) 100%); } .bjork-layered-button-raised { color: oklch(100% 0 0); text-shadow: 0 -1px #00000026; background: radial-gradient(ellipse at -20px top, #ffffff38, #fff0), linear-gradient(180deg, oklch(0.1881 0.006 265), oklch(0.5493 0.0081 265)); } .dark .bjork-layered-button-raised { color: oklch(0.2574 0.0056 265); text-shadow: 0 -1px #00000026; background: radial-gradient(ellipse at 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"@/components/bjork-ui/_core/random"; import { useChartCanvas, easeOut, hatchPattern, writeLabels, roundRectPath } from "@/components/bjork-ui/charts/_kit/canvas"; import { useChartTheme, chartFocusRing, ChartTable, ChartLegend, LabelPool, placeTooltip, HoverTooltip, chartTagEdge, ChartAnnouncer, type ChartPalette, type TooltipHandle, type AnnouncerHandle, type TooltipContent, } from "@/components/bjork-ui/charts/_kit/chrome"; import { clamp, crisp, damp, timeTicks, withAlpha, formatPercent } from "@/components/bjork-ui/charts/_kit/scale"; export type StateTone = "ok" | "warn" | "down" | "idle" | "accent"; export interface TimelineState { id: string; label: string; tone: StateTone; } export interface TimelineSegment { start: number; end: number; state: string; note?: string; } export interface TimelineLane { id: string; label: string; segments: TimelineSegment[]; } export interface StateTimelineProps { lanes: TimelineLane[]; states: TimelineState[]; domain: [number, number]; /** Visible window. Uncontrolled by default (the whole domain). */ view?: [number, number]; onViewChange?: (view: [number, number]) => void; /** A "now" marker. */ now?: number; /** Which state counts toward the per-lane share in the right gutter. Defaults to the first "ok" state. */ shareState?: string | false; shareLabel?: string; formatTime?: (t: number, detail: "axis" | "full") => string; formatDuration?: (ms: number) => string; /** Posed hover: lane index and segment index. */ focus?: { lane: number; segment: number } | null; laneHeight?: number; ariaLabel?: string; tone?: BjorkTone; attract?: boolean; className?: string; } const LABEL_W = 108; const SHARE_W = 56; const NARROW = 480; const LABEL_W_NARROW = 72; const SHARE_W_NARROW = 50; const TOP = 30; const AXIS_H = 22; const OVERVIEW_H = 34; const OVERVIEW_GAP = 12; const LANE_GAP = 8; const VIEW_TAU = 0.12; const ENTER_MS = 760; const LANE_ENTER_MS = 460; const MIN_SPAN = 30 * 60 * 1000; const X_LABELS = 12; const ATTRACT_IDLE_MS = 4000; const ATTRACT_STEP_MS = 2600; const fullFmt = new Intl.DateTimeFormat("en-US", { month: "short", day: "numeric", hour: "2-digit", minute: "2-digit", hour12: false, timeZone: "UTC" }); const axisFmt = new Intl.DateTimeFormat("en-US", { hour: "2-digit", minute: "2-digit", hour12: false, timeZone: "UTC" }); const defaultFormatTime = (t: number, detail: "axis" | "full") => (detail === "axis" ? axisFmt.format(t) : fullFmt.format(t)); function defaultFormatDuration(ms: number): string { const m = Math.round(ms / 60000); if (m < 60) return `${m}m`; const h = Math.floor(m / 60); const mm = m % 60; if (h < 48) return mm ? `${h}h ${mm}m` : `${h}h`; const d = Math.floor(h / 24); const hh = h % 24; return hh ? `${d}d ${hh}h` : `${d}d`; } function toneColor(pal: ChartPalette, tone: StateTone): string { switch (tone) { case "ok": return withAlpha(pal.text, 0.1); case "warn": return pal.warning; case "down": return pal.error; case "accent": return pal.accent; default: return withAlpha(pal.text, 0.07); } } // Severity is also drawn as height, so it survives colour-vision deficiency and 2px slivers: // outages and planned work fill the lane, degraded periods sit as a shorter centred band. const WARN_INSET = 0.22; const insetOf = (tone: StateTone | undefined, laneH: number) => (tone === "warn" ? Math.round(laneH * WARN_INSET) : 0); // Overview stroke weight per tone, the same cue at overview scale. const overviewWidth = (tone: StateTone) => (tone === "down" ? 3.5 : tone === "warn" ? 1.5 : 2.5); const DAY_MS = 86400000; interface Run { vs: number; ve: number; ts: number; te: number; enter: number; hover: { lane: number; seg: number } | null; source: "pointer" | "keyboard" | "prop" | "attract" | null; pointerT: number | null; plot: { l: number; r: number; t: number; b: number; ot: number; ob: number }; laneH: number; xCache: string[]; shareCache: string[]; drag: null | { mode: "pan" | "move" | "left" | "right"; x: number; vs: number; ve: number; id: number }; lastInput: number; attractAt: number; attractK: number; } export function StateTimeline({ lanes, states, domain, view, onViewChange, now, shareState, shareLabel = "Uptime", formatTime = defaultFormatTime, formatDuration = defaultFormatDuration, focus, laneHeight = 22, ariaLabel = "State timeline", tone: toneProp, attract = false, className, }: StateTimelineProps) { const { pal, reduce, vars } = useChartTheme(toneProp); const announcer = useRef(null); const tipRef = useRef(null); const wrapperRef = useRef(null); const timeTagRef = useRef(null); const nowRef = useRef(null); const xPool = useRef<(HTMLSpanElement | null)[]>([]); const sharePool = useRef<(HTMLSpanElement | null)[]>([]); const rectRef = useRef(null); const stateMap = useMemo(() => new Map(states.map((s) => [s.id, s])), [states]); const shareId = shareState === false ? null : (shareState ?? states.find((s) => s.tone === "ok")?.id ?? null); const sorted = useMemo(() => lanes.map((l) => ({ ...l, segments: [...l.segments].sort((a, b) => a.start - b.start) })), [lanes]); const init = view ?? domain; const st = useRef({ vs: init[0], ve: init[1], ts: init[0], te: init[1], enter: 0, hover: focus ? { lane: focus.lane, seg: focus.segment } : null, source: focus ? "prop" : null, pointerT: null, plot: { l: 0, r: 0, t: 0, b: 0, ot: 0, ob: 0 }, laneH: laneHeight, xCache: [], shareCache: [], drag: null, lastInput: 0, attractAt: 0, attractK: 0, }); const cfg = useRef({ sorted, stateMap, domain, now, shareId, formatTime, reduce, pal, attract, laneHeight, onViewChange }); useEffect(() => { cfg.current = { sorted, stateMap, domain, now, shareId, formatTime, reduce, pal, attract, laneHeight, onViewChange }; }); const clampView = (a: number, b: number): [number, number] => { const [d0, d1] = cfg.current.domain; const full = d1 - d0; let w = clamp(b - a, Math.min(MIN_SPAN, full), full); let s = a; if (s < d0) s = d0; if (s + w > d1) s = d1 - w; if (!Number.isFinite(w)) w = full; return [s, s + w]; }; const tooltipFor = (lane: number, seg: number): TooltipContent | null => { const l = sorted[lane]; const sg = l?.segments[seg]; if (!sg) return null; const stt = stateMap.get(sg.state); return { key: `${lane}:${seg}:${pal.text}`, title: l.label, rows: [ { key: "s", label: formatDuration(sg.end - sg.start), value: stt?.label ?? sg.state, color: stt ? (stt.tone === "ok" ? withAlpha(pal.text, 0.5) : toneColor(pal, stt.tone)) : undefined }, { key: "t", label: "", // The short end form only when it shares the start's (UTC) day, so multi-day spans keep their date. value: `${formatTime(sg.start, "full")} – ${formatTime(sg.end, Math.floor(sg.start / DAY_MS) === Math.floor((sg.end - 1) / DAY_MS) ? "axis" : "full")}`, strong: false, }, ...(sg.note ? [{ key: "n", label: "", value: sg.note, strong: false }] : []), ], }; }; const tooltipForRef = useRef(tooltipFor); useEffect(() => { tooltipForRef.current = tooltipFor; }); const { rootRef, hostRef, canvasRef, wake } = useChartCanvas(({ ctx, w, h, dt }) => { const s = st.current; const c = cfg.current; const p = c.pal; const L = c.sorted; const [d0, d1] = c.domain; // Attract: zoom into each incident in turn, then back out. if (c.attract && !c.reduce) { const nowMs = performance.now(); if ((!s.lastInput || nowMs - s.lastInput > ATTRACT_IDLE_MS) && nowMs - s.attractAt > ATTRACT_STEP_MS) { s.attractAt = nowMs; const incidents: { lane: number; seg: number; sg: TimelineSegment }[] = []; L.forEach((l, li) => l.segments.forEach((sg, si) => c.stateMap.get(sg.state)?.tone !== "ok" && incidents.push({ lane: li, seg: si, sg }))); s.attractK = (s.attractK + 1) % (incidents.length + 1); if (s.attractK === incidents.length || !incidents.length) { [s.ts, s.te] = [d0, d1]; s.hover = null; tipRef.current?.set(null); } else { const it = incidents[s.attractK]; const mid = (it.sg.start + it.sg.end) / 2; const span = Math.max((d1 - d0) / 6, (it.sg.end - it.sg.start) * 4); [s.ts, s.te] = clampView(mid - span / 2, mid + span / 2); s.hover = { lane: it.lane, seg: it.seg }; s.source = "attract"; tipRef.current?.set(tooltipForRef.current(it.lane, it.seg)); } } } if (c.reduce || s.drag) { s.vs = s.ts; s.ve = s.te; } else { s.vs = damp(s.vs, s.ts, VIEW_TAU, dt); s.ve = damp(s.ve, s.te, VIEW_TAU, dt); } const span = d1 - d0; const settled = Math.abs(s.vs - s.ts) + Math.abs(s.ve - s.te) < span * 1e-5; if (settled) { s.vs = s.ts; s.ve = s.te; } const laneH = c.laneHeight; s.laneH = laneH; const narrow = w < NARROW; const labelW = narrow ? LABEL_W_NARROW : LABEL_W; const plot = { l: labelW, r: Math.max(labelW + 60, w - (narrow ? SHARE_W_NARROW : SHARE_W)), t: TOP, b: TOP + L.length * laneH + Math.max(0, L.length - 1) * LANE_GAP, ot: 0, ob: 0, }; plot.ot = plot.b + AXIS_H + OVERVIEW_GAP; plot.ob = Math.min(h - 2, plot.ot + OVERVIEW_H); s.plot = plot; const pW = plot.r - plot.l; const xOf = (t: number) => plot.l + ((t - s.vs) / Math.max(1, s.ve - s.vs)) * pW; const oxOf = (t: number) => plot.l + ((t - d0) / Math.max(1, span)) * pW; const laneY = (i: number) => plot.t + i * (laneH + LANE_GAP); s.enter = c.reduce ? 1 : Math.min(1, s.enter + (dt * 1000) / ENTER_MS); const revealOf = (i: number) => { if (s.enter >= 1) return 1; const delay = (i / Math.max(1, L.length)) * (ENTER_MS - LANE_ENTER_MS); return easeOut(clamp((s.enter * ENTER_MS - delay) / LANE_ENTER_MS, 0, 1)); }; // Time gridlines and labels for the view. const ticks = timeTicks(s.vs, s.ve, pW, narrow ? 52 : 80); ctx.lineWidth = 1; ctx.strokeStyle = p.hair; ctx.beginPath(); for (const tk of ticks) { const x = crisp(xOf(tk.t)); ctx.moveTo(x, plot.t - 4); ctx.lineTo(x, plot.b + 4); } ctx.stroke(); writeLabels( xPool.current, s.xCache, ticks.filter((tk) => xOf(tk.t) > plot.l + 14 && xOf(tk.t) < plot.r - 14).map((tk) => ({ text: tk.label, x: xOf(tk.t), y: plot.b + 14, ax: -50 })), ); // Lanes. const hatch = hatchPattern(ctx, withAlpha(p.text, 0.16), 4, 1); // Planned states (accent) are a hatched wash, so they never read as the solid red of an outage. const planned = hatchPattern(ctx, p.accent, 3, 1); const hov = s.hover; const shares: { text: string; x: number; y: number; ax: number }[] = []; for (let i = 0; i < L.length; i++) { const y = laneY(i); const rev = revealOf(i); const clipR = plot.l + pW * rev; ctx.save(); ctx.beginPath(); ctx.rect(plot.l, y - 2, clipR - plot.l, laneH + 4); ctx.clip(); // Track behind the lane, so gaps in data read as gaps. ctx.fillStyle = withAlpha(p.text, 0.035); ctx.beginPath(); roundRectPath(ctx, plot.l, y, pW, laneH, 4, 4); ctx.fill(); let okMs = 0; let seenMs = 0; const segs = L[i].segments; for (let k = 0; k < segs.length; k++) { const sg = segs[k]; if (sg.end < s.vs || sg.start > s.ve) continue; const stt = c.stateMap.get(sg.state); const a = Math.max(sg.start, s.vs); const b = Math.min(sg.end, s.ve); seenMs += b - a; if (stt && stt.id === c.shareId) okMs += b - a; let x0 = xOf(sg.start); let x1 = xOf(sg.end); // 2px surface gap between neighbours, unless the segment is too thin to lose it. if (x1 - x0 > 4) { x0 += 1; x1 -= 1; } const sw = Math.max(2, x1 - x0); const isHover = !!hov && hov.lane === i && hov.seg === k; const inset = insetOf(stt?.tone, laneH); ctx.beginPath(); roundRectPath(ctx, x0, y + inset, sw, laneH - inset * 2, Math.min(3, sw / 2), Math.min(3, sw / 2)); const isPlanned = stt?.tone === "accent" && !!planned; ctx.fillStyle = isPlanned ? withAlpha(p.accent, 0.3) : stt ? toneColor(p, stt.tone) : withAlpha(p.text, 0.1); ctx.globalAlpha = hov && !isHover ? 0.78 : 1; ctx.fill(); if (stt?.tone === "idle" && hatch) { ctx.fillStyle = hatch; ctx.fill(); } if (isPlanned) { ctx.fillStyle = planned; ctx.fill(); } ctx.globalAlpha = 1; if (isHover) { ctx.lineWidth = 1.5; ctx.strokeStyle = p.text; ctx.beginPath(); roundRectPath(ctx, x0 - 1.5, y + inset - 1.5, sw + 3, laneH - inset * 2 + 3, 4, 4); ctx.stroke(); } } ctx.restore(); if (c.shareId) shares.push({ text: seenMs > 0 ? formatPercent(okMs / seenMs, okMs / seenMs > 0.999 && okMs < seenMs ? 2 : 1) : "–", x: w, y: y + laneH / 2, ax: -100 }); } writeLabels(sharePool.current, s.shareCache, shares.map((sh, i) => ({ ...sh, opacity: revealOf(i) }))); // Now marker. if (c.now !== undefined && c.now >= s.vs && c.now <= s.ve) { const x = crisp(xOf(c.now)); ctx.strokeStyle = p.accentInk; ctx.lineWidth = 1; ctx.beginPath(); ctx.moveTo(x, plot.t - 8); ctx.lineTo(x, plot.b + 4); ctx.stroke(); if (nowRef.current) { // Flip to the left of the line near the right edge, clear of the gutter header. const flip = x > plot.r - 40; nowRef.current.style.opacity = "1"; nowRef.current.style.transform = `translate3d(${(flip ? x - 5 : x + 5).toFixed(1)}px, ${(plot.t - 6).toFixed(1)}px, 0) translate(${flip ? "-100%" : "0"}, -100%)`; } } else if (nowRef.current) nowRef.current.style.opacity = "0"; // Crosshair at the pointer time. const tag = timeTagRef.current; if (s.pointerT !== null && s.source === "pointer") { const x = crisp(xOf(s.pointerT)); ctx.strokeStyle = p.textSoft; ctx.lineWidth = 1; ctx.beginPath(); ctx.moveTo(x, plot.t - 4); ctx.lineTo(x, plot.b + 4); ctx.stroke(); if (tag) { tag.textContent = c.formatTime(s.pointerT, "full"); const tw = tag.offsetWidth; tag.style.opacity = "1"; tag.style.transform = `translate3d(${clamp(xOf(s.pointerT) - tw / 2, plot.l, plot.r - tw).toFixed(1)}px, ${(plot.b + 5).toFixed(1)}px, 0)`; } } else if (tag) tag.style.opacity = "0"; // Tooltip anchor: the pointer time inside the hovered segment, or the segment's visible middle. const tip = tipRef.current; if (tip?.el && hov) { const sg = L[hov.lane]?.segments[hov.seg]; if (sg) { const a = Math.max(sg.start, s.vs); const b = Math.min(sg.end, s.ve); const t = s.source === "pointer" && s.pointerT !== null ? clamp(s.pointerT, a, b) : (a + b) / 2; tip.el.style.visibility = b < a ? "hidden" : "visible"; const pos = placeTooltip(xOf(t), laneY(hov.lane), tip.size.w, tip.size.h, w, h, 10); tip.el.style.transform = `translate3d(${pos.x}px, ${pos.y}px, 0)`; } } // Overview: every lane as a hairline, incidents in colour, and the brush window. if (plot.ob - plot.ot > 12) { const oT = plot.ot; const oB = plot.ob; ctx.fillStyle = withAlpha(p.text, 0.03); ctx.beginPath(); roundRectPath(ctx, plot.l, oT, pW, oB - oT, 6, 6); ctx.fill(); const rowGap = (oB - oT - 10) / Math.max(1, L.length - 1); for (let i = 0; i < L.length; i++) { const y = Math.round(oT + 5 + i * rowGap) + 0.5; ctx.strokeStyle = withAlpha(p.text, 0.14); ctx.lineWidth = 1; ctx.beginPath(); ctx.moveTo(plot.l + 4, y); ctx.lineTo(plot.r - 4, y); ctx.stroke(); ctx.lineCap = "round"; for (const sg of L[i].segments) { const stt = c.stateMap.get(sg.state); if (!stt || stt.tone === "ok") continue; ctx.strokeStyle = stt.tone === "accent" ? withAlpha(p.accent, 0.5) : toneColor(p, stt.tone); ctx.lineWidth = overviewWidth(stt.tone); ctx.beginPath(); const a = oxOf(sg.start); const b = Math.max(a + 0.5, oxOf(sg.end)); ctx.moveTo(a, y); ctx.lineTo(b, y); ctx.stroke(); } ctx.lineCap = "butt"; } const bx0 = oxOf(s.vs); const bx1 = oxOf(s.ve); const full = s.vs <= d0 + 1 && s.ve >= d1 - 1; if (!full) { // Dim what is outside the window. ctx.fillStyle = withAlpha(p.stage, 0.62); ctx.fillRect(plot.l, oT, bx0 - plot.l, oB - oT); ctx.fillRect(bx1, oT, plot.r - bx1, oB - oT); } ctx.fillStyle = withAlpha(p.accent, full ? 0.05 : 0.08); ctx.fillRect(bx0, oT, bx1 - bx0, oB - oT); ctx.strokeStyle = withAlpha(p.accentInk, full ? 0.45 : 0.9); ctx.lineWidth = 1; ctx.strokeRect(Math.round(bx0) + 0.5, oT + 0.5, Math.max(1, Math.round(bx1 - bx0) - 1), oB - oT - 1); // Grips. for (const gx of [bx0, bx1]) { ctx.fillStyle = p.accent; ctx.beginPath(); roundRectPath(ctx, gx - 2.5, (oT + oB) / 2 - 8, 5, 16, 2.5, 2.5); ctx.fill(); } } return !settled || s.enter < 1 || !!s.drag || (c.attract && !c.reduce); }); // Prop sync. useEffect(() => { if (!view) return; const s = st.current; [s.ts, s.te] = clampView(view[0], view[1]); wake(); // eslint-disable-next-line react-hooks/exhaustive-deps }, [view?.[0], view?.[1], wake]); useEffect(() => { const s = st.current; if (!view) [s.ts, s.te] = clampView(s.ts, s.te); wake(); // eslint-disable-next-line react-hooks/exhaustive-deps }, [lanes, states, domain[0], domain[1], pal, reduce, attract, wake]); useEffect(() => { if (focus === undefined) return; const s = st.current; s.hover = focus ? { lane: focus.lane, seg: focus.segment } : null; s.source = focus ? "prop" : null; tipRef.current?.set(focus ? tooltipFor(focus.lane, focus.segment) : null); wake(); // eslint-disable-next-line react-hooks/exhaustive-deps }, [focus?.lane, focus?.segment, pal, wake]); const setView = (a: number, b: number) => { const s = st.current; [s.ts, s.te] = clampView(a, b); onViewChange?.([s.ts, s.te]); wake(); }; const describe = (lane: number, seg: number) => { const l = sorted[lane]; const sg = l?.segments[seg]; if (!sg) return ""; return `${l.label}: ${stateMap.get(sg.state)?.label ?? sg.state} for ${formatDuration(sg.end - sg.start)}, ${formatTime(sg.start, "full")} to ${formatTime(sg.end, "full")}${sg.note ? `, ${sg.note}` : ""}`; }; const setHover = (hv: { lane: number; seg: number } | null, source: Run["source"]) => { const s = st.current; const same = (hv === null && s.hover === null) || (hv && s.hover && hv.lane === s.hover.lane && hv.seg === s.hover.seg); s.hover = hv; s.source = hv ? source : source === "pointer" ? "pointer" : null; if (!same) { tipRef.current?.set(hv ? tooltipFor(hv.lane, hv.seg) : null); if (hv && source === "keyboard") announcer.current?.say(describe(hv.lane, hv.seg)); } wake(); }; const local = (e: PointerEvent) => { const r = rectRef.current ?? wrapperRef.current?.getBoundingClientRect(); return r ? { x: e.clientX - r.left, y: e.clientY - r.top } : null; }; const hitLane = (y: number) => { const s = st.current; for (let i = 0; i < sorted.length; i++) { const top = s.plot.t + i * (s.laneH + LANE_GAP); if (y >= top - LANE_GAP / 2 && y <= top + s.laneH + LANE_GAP / 2) return i; } return -1; }; const onPointerDown = (e: PointerEvent) => { st.current.lastInput = performance.now(); if (wrapperRef.current) rectRef.current = wrapperRef.current.getBoundingClientRect(); const pt = local(e); if (!pt) return; const s = st.current; const [d0, d1] = domain; const inOverview = pt.y >= s.plot.ot - 4 && pt.y <= s.plot.ob + 4 && pt.x >= s.plot.l - 8 && pt.x <= s.plot.r + 8; const inPlot = pt.y >= s.plot.t - 4 && pt.y <= s.plot.b + 4 && pt.x >= s.plot.l && pt.x <= s.plot.r; if (!inOverview && !inPlot) return; let mode: "pan" | "move" | "left" | "right" = "pan"; if (inOverview) { const ox = (t: number) => s.plot.l + ((t - d0) / (d1 - d0)) * (s.plot.r - s.plot.l); const bx0 = ox(s.ts); const bx1 = ox(s.te); if (Math.abs(pt.x - bx0) < 10) mode = "left"; else if (Math.abs(pt.x - bx1) < 10) mode = "right"; else if (pt.x > bx0 && pt.x < bx1) mode = "move"; else { // Jump: centre the window on the click. const t = d0 + ((pt.x - s.plot.l) / (s.plot.r - s.plot.l)) * (d1 - d0); const wv = s.te - s.ts; setView(t - wv / 2, t + wv / 2); mode = "move"; } } s.drag = { mode, x: pt.x, vs: s.ts, ve: s.te, id: e.pointerId }; e.currentTarget.setPointerCapture(e.pointerId); wake(); }; const onPointerMove = (e: PointerEvent) => { st.current.lastInput = performance.now(); const pt = local(e); if (!pt) return; const s = st.current; const [d0, d1] = domain; const pW = s.plot.r - s.plot.l; if (s.drag && s.drag.id === e.pointerId) { const dx = pt.x - s.drag.x; const dOver = (dx / pW) * (d1 - d0); const dView = (dx / pW) * (s.drag.ve - s.drag.vs); if (s.drag.mode === "pan") setView(s.drag.vs - dView, s.drag.ve - dView); else if (s.drag.mode === "move") setView(s.drag.vs + dOver, s.drag.ve + dOver); else if (s.drag.mode === "left") setView(Math.min(s.drag.vs + dOver, s.drag.ve - MIN_SPAN), s.drag.ve); else setView(s.drag.vs, Math.max(s.drag.ve + dOver, s.drag.vs + MIN_SPAN)); return; } if (pt.x < s.plot.l || pt.x > s.plot.r || pt.y < s.plot.t - 6 || pt.y > s.plot.b + 6) { if (s.source === "pointer") { s.pointerT = null; setHover(null, null); } return; } const t = s.vs + ((pt.x - s.plot.l) / pW) * (s.ve - s.vs); s.pointerT = t; const lane = hitLane(pt.y); let hv: { lane: number; seg: number } | null = null; if (lane >= 0) { const segs = sorted[lane].segments; // Nearest segment within 6px, so thin incidents are still easy to land on. const slack = (6 / pW) * (s.ve - s.vs); let best = -1; let bd = Infinity; for (let k = 0; k < segs.length; k++) { const sg = segs[k]; const d = t < sg.start ? sg.start - t : t > sg.end ? t - sg.end : 0; // Prefer incidents over the quiet state when both are in reach. const quiet = stateMap.get(sg.state)?.tone === "ok" ? slack * 0.5 : 0; if (d <= slack && d + quiet < bd) { bd = d + quiet; best = k; } } if (best >= 0) hv = { lane, seg: best }; } s.source = "pointer"; setHover(hv, "pointer"); }; const endDrag = (e: PointerEvent) => { const s = st.current; if (s.drag && s.drag.id === e.pointerId) { s.drag = null; wake(); } }; // Wheel zoom around the pointer: pinch always, plain wheel once focused. useEffect(() => { const el = wrapperRef.current; if (!el) return; const onWheel = (e: WheelEvent) => { const focused = el.contains(document.activeElement); const horizontal = Math.abs(e.deltaX) > Math.abs(e.deltaY); if (!e.ctrlKey && !focused && !horizontal) return; e.preventDefault(); const s = st.current; s.lastInput = performance.now(); const rect = el.getBoundingClientRect(); const x = clamp(e.clientX - rect.left, s.plot.l, s.plot.r); const pW = s.plot.r - s.plot.l; if (horizontal && !e.ctrlKey) { const dt = (e.deltaX / pW) * (s.te - s.ts); setView(s.ts + dt, s.te + dt); return; } const anchor = s.ts + ((x - s.plot.l) / pW) * (s.te - s.ts); const k = Math.exp(e.deltaY * (e.ctrlKey ? 0.01 : 0.0015)); const frac = (anchor - s.ts) / (s.te - s.ts); const wv = (s.te - s.ts) * k; setView(anchor - frac * wv, anchor - frac * wv + wv); }; el.addEventListener("wheel", onWheel, { passive: false }); return () => el.removeEventListener("wheel", onWheel); // eslint-disable-next-line react-hooks/exhaustive-deps }, [wake]); const ensureVisible = (sg: TimelineSegment) => { const s = st.current; const wv = s.te - s.ts; if (sg.end - sg.start > wv * 0.9) return; if (sg.start < s.ts || sg.end > s.te) { const mid = (sg.start + sg.end) / 2; setView(mid - wv / 2, mid + wv / 2); } }; const onKeyDown = (e: KeyboardEvent) => { const s = st.current; s.lastInput = performance.now(); if (!sorted.length) return; const cur = s.hover && s.source !== "attract" ? s.hover : null; let next: { lane: number; seg: number } | null = null; const nearestIn = (lane: number, t: number) => { const segs = sorted[lane].segments; let best = 0; let bd = Infinity; segs.forEach((sg, k) => { const d = t < sg.start ? sg.start - t : t > sg.end ? t - sg.end : 0; if (d < bd) { bd = d; best = k; } }); return best; }; if (e.key === "ArrowRight" || e.key === "ArrowLeft") { if (!cur) next = { lane: 0, seg: nearestIn(0, (s.ts + s.te) / 2) }; else { const segs = sorted[cur.lane].segments; next = { lane: cur.lane, seg: clamp(cur.seg + (e.key === "ArrowRight" ? 1 : -1) * (e.shiftKey ? 5 : 1), 0, segs.length - 1) }; } } else if (e.key === "ArrowDown" || e.key === "ArrowUp") { const lane = cur ? clamp(cur.lane + (e.key === "ArrowDown" ? 1 : -1), 0, sorted.length - 1) : 0; const ref = cur ? sorted[cur.lane].segments[cur.seg] : null; const t = ref ? (Math.max(ref.start, s.ts) + Math.min(ref.end, s.te)) / 2 : (s.ts + s.te) / 2; next = { lane, seg: nearestIn(lane, t) }; } else if (e.key === "+" || e.key === "=" || e.key === "-" || e.key === "_") { e.preventDefault(); const k = e.key === "+" || e.key === "=" ? 0.6 : 1 / 0.6; const ref = cur ? sorted[cur.lane].segments[cur.seg] : null; const anchor = ref ? (ref.start + ref.end) / 2 : (s.ts + s.te) / 2; const wv = (s.te - s.ts) * k; setView(anchor - wv / 2, anchor + wv / 2); return; } else if (e.key === "0") { e.preventDefault(); setView(domain[0], domain[1]); return; } else if (e.key === "Escape") { if (!s.hover) return; e.preventDefault(); setHover(null, null); return; } if (!next) return; e.preventDefault(); s.pointerT = null; const sg = sorted[next.lane].segments[next.seg]; if (sg) ensureVisible(sg); setHover(next, "keyboard"); }; const legend = useMemo( () => states.map((s2) => ({ id: s2.id, label: s2.label, color: s2.tone === "ok" ? withAlpha(pal.text, 0.3) : s2.tone === "accent" ? `repeating-linear-gradient(135deg, ${pal.accent} 0 1px, ${withAlpha(pal.accent, 0.3)} 1px 3px)` : s2.tone === "warn" ? // The shorter band the lanes use for this state. `linear-gradient(transparent 0 25%, ${toneColor(pal, s2.tone)} 25% 75%, transparent 75%)` : toneColor(pal, s2.tone), shape: "rect" as const, })), [states, pal], ); const tableRows = useMemo( () => sorted.flatMap((l) => l.segments.map((sg) => [l.label, stateMap.get(sg.state)?.label ?? sg.state, formatTime(sg.start, "full"), formatTime(sg.end, "full"), formatDuration(sg.end - sg.start)])), [sorted, stateMap, formatTime, formatDuration], ); const tableCols = useMemo(() => ["Lane", "State", "Start", "End", "Duration"], []); const incidents = tableRows.filter((r) => r[1] !== (shareId ? stateMap.get(shareId)?.label : "")).length; const height = TOP + lanes.length * laneHeight + Math.max(0, lanes.length - 1) * LANE_GAP + AXIS_H + OVERVIEW_GAP + OVERVIEW_H + 2; return (

{ if (wrapperRef.current) rectRef.current = wrapperRef.current.getBoundingClientRect(); }} onPointerDown={onPointerDown} onPointerMove={onPointerMove} onPointerUp={endDrag} onPointerCancel={endDrag} onPointerLeave={() => { const s = st.current; if (s.source === "pointer") { s.pointerT = null; setHover(null, null); } }} onDoubleClick={() => setView(domain[0], domain[1])} onKeyDown={onKeyDown} className={cn("absolute inset-0 touch-pan-y rounded-[10px]", chartFocusRing)} >

{shareId && ( )} {sorted.map((l, i) => ( ))}

); } // Seeded demo data: services over a window, mostly healthy, with a few incidents and maintenance. export function createIncidentLanes(seed: number, names: string[], domain: [number, number]): TimelineLane[] { const rnd = mulberry32(seed); const [d0, d1] = domain; const span = d1 - d0; return names.map((label, i) => { const segments: TimelineSegment[] = []; let t = d0; const events = 1 + Math.floor(rnd() * 3) + (i === 2 ? 2 : 0); const marks = Array.from({ length: events }, () => d0 + rnd() * span * 0.94).sort((a, b) => a - b); for (const m of marks) { if (m <= t + 20 * 60000) continue; segments.push({ start: t, end: m, state: "ok" }); const r = rnd(); const state = r < 0.45 ? "degraded" : r < 0.75 ? "down" : "maintenance"; const len = state === "maintenance" ? 2 * 3600000 : (0.3 + rnd() * (state === "down" ? 1.6 : 4)) * 3600000; const end = Math.min(d1, m + len); segments.push({ start: m, end, state, note: state === "down" ? "5xx above 20%" : state === "degraded" ? "p95 over SLO" : "Planned window", }); t = end; } if (t < d1) segments.push({ start: t, end: d1, state: "ok" }); return { id: label.toLowerCase().replace(/\s+/g, "-"), label, segments }; }); } a3:T540,export type BjorkTone = "dark" | "light"; // Canvas, WebGL and SVG attribute colours. DOM code uses the CSS tokens with these as fallbacks. export const BJORK_PALETTE = { dark: { bg: "#050505", stage: "#111111", surface: "#121212", raised: "#161616", active: "#202020", border: "#232323", borderStrong: "#343434", text: "#ededed", textMedium: "rgba(237,237,237,0.72)", textMuted: "rgba(237,237,237,0.6)", textSoft: "rgba(237,237,237,0.5)", textFaint: "rgba(237,237,237,0.22)", hair: "rgba(237,237,237,0.12)", accent: "#ec5c13", accentInk: "#ec5c13", accentFill: "#b84a12", accentSoft: "rgba(236,92,19,0.12)", accentMuted: "rgba(236,92,19,0.24)", accentFg: "#fff2ea", success: "#4cc38a", warning: "#f2b544", error: "#ff5c4d", }, light: { bg: "#f7f5ef", stage: "#f7f5ef", surface: "#fffcf6", raised: "#f5efe3", active: "#efe7d8", border: "#eee6db", borderStrong: "#e1d7c8", text: "#171717", textMedium: "rgba(23,23,23,0.78)", textMuted: "rgba(23,23,23,0.68)", textSoft: "rgba(23,23,23,0.62)", textFaint: "rgba(23,23,23,0.22)", hair: "rgba(23,23,23,0.10)", accent: "#ec7d43", accentInk: "#b4531f", accentFill: "#ec7d43", accentSoft: "rgba(236,125,67,0.10)", accentMuted: "rgba(236,125,67,0.20)", accentFg: "#3f2112", success: "#1f8a55", warning: "#a86b00", error: "#c8361f", }, } as const; a4:T8ed,// Seeded randomness and noise. Deterministic for a given seed, so previews and tests repeat. // Small fast PRNG. Returns floats in [0, 1). export function mulberry32(seed: number): () => number { let a = seed >>> 0; return () => { a = (a + 0x6d2b79f5) >>> 0; let t = a; t = Math.imul(t ^ (t >>> 15), t | 1); t ^= t + Math.imul(t ^ (t >>> 7), t | 61); return ((t ^ (t >>> 14)) >>> 0) / 4294967296; }; } // FNV-1a 32-bit. export function hashString(s: string): number { let h = 0x811c9dc5; for (let i = 0; i < s.length; i++) { h ^= s.charCodeAt(i); h = Math.imul(h, 0x01000193); } return h >>> 0; } // Integer lattice hash to [-1, 1]. function latticeHash(seed: number, x: number, y = 0): number { let h = Math.imul(x | 0, 374761393) ^ Math.imul(y | 0, 668265263) ^ Math.imul(seed | 0, 2246822519); h = Math.imul(h ^ (h >>> 13), 1274126177); h ^= h >>> 16; return ((h >>> 0) / 4294967295) * 2 - 1; } function smooth(t: number): number { return t * t * (3 - 2 * t); } export function valueNoise1D(seed: number): (x: number) => number { return (x: number) => { const i = Math.floor(x); const f = x - i; const a = latticeHash(seed, i); const b = latticeHash(seed, i + 1); return a + (b - a) * smooth(f); }; } export function fbm1D(seed: number, octaves = 3): (x: number) => number { const layers = Array.from({ length: octaves }, (_, o) => valueNoise1D(seed + o * 101)); let norm = 0; for (let o = 0; o < octaves; o++) norm += 0.5 ** o; return (x: number) => { let sum = 0; let amp = 1; let freq = 1; for (let o = 0; o < octaves; o++) { sum += amp * layers[o](x * freq); amp *= 0.5; freq *= 2; } return sum / norm; }; } export function valueNoise2D(seed: number): (x: number, y: number) => number { return (x: number, y: number) => { const xi = Math.floor(x); const yi = Math.floor(y); const fx = smooth(x - xi); const fy = smooth(y - yi); const a = latticeHash(seed, xi, yi); const b = latticeHash(seed, xi + 1, yi); const c = latticeHash(seed, xi, yi + 1); const d = latticeHash(seed, xi + 1, yi + 1); const top = a + (b - a) * fx; const bottom = c + (d - c) * fx; return top + (bottom - top) * fy; }; } a5:T130a,"use client"; // Canvas plumbing shared by the Charts collection. One hook gives a chart a measured host, a // DPR-capped canvas that follows it, and a draw loop that pauses offscreen and idles when settled. import { useCallback, useEffect, useRef, type RefObject } from "react"; import { useVisibleLoop } from "@/components/bjork-ui/_core/loop"; import { sizeCanvas, useElementSize } from "@/components/bjork-ui/_core/canvas"; import { cubicBezier, ease } from "@/components/bjork-ui/_core/motion"; export interface ChartFrame { ctx: CanvasRenderingContext2D; w: number; h: number; dt: number; t: number; } /** * `draw` runs inside `useVisibleLoop`. Return true to keep animating, false to go idle until `wake()`. * The loop root is `rootRef` (gets `data-loop`). The canvas is sized to `hostRef`. */ export function useChartCanvas(draw: (f: ChartFrame) => boolean) { const rootRef = useRef(null); const hostRef = useRef(null); const canvasRef = useRef(null); const size = useElementSize(hostRef); const sizeRef = useRef({ w: 0, h: 0, dpr: 1 }); const drawRef = useRef(draw); useEffect(() => { drawRef.current = draw; }); const frame = useCallback((dt: number, t: number) => { const canvas = canvasRef.current; const { w, h, dpr } = sizeRef.current; if (!canvas || !w || !h) return true; const ctx = canvas.getContext("2d"); if (!ctx) return false; ctx.setTransform(dpr, 0, 0, dpr, 0, 0); ctx.clearRect(0, 0, w, h); return drawRef.current({ ctx, w, h, dt, t }); }, []); const { wake } = useVisibleLoop(rootRef as RefObject, frame); useEffect(() => { const canvas = canvasRef.current; if (!canvas || !size.width || !size.height) return; sizeRef.current = { w: size.width, h: size.height, dpr: sizeCanvas(canvas, size.width, size.height) }; wake(); }, [size.width, size.height, wake]); return { rootRef, hostRef, canvasRef, size, wake }; } // The house ease-out for entrances, usable in rAF code. export const easeOut = cubicBezier(...(ease.out as unknown as [number, number, number, number])); export const easeInOut = cubicBezier(...(ease.inOut as unknown as [number, number, number, number])); // A 45 degree hatch pattern in `color`, for counterfactual and loss regions. const hatchCache = new Map(); export function hatchPattern(ctx: CanvasRenderingContext2D, color: string, gap = 5, width = 1): CanvasPattern | null { const key = `${color}|${gap}|${width}`; if (hatchCache.has(key)) return hatchCache.get(key)!; if (typeof document === "undefined") return null; const tile = document.createElement("canvas"); const s = gap * 2; tile.width = s * 2; tile.height = s * 2; const c = tile.getContext("2d"); if (!c) return null; c.scale(2, 2); c.strokeStyle = color; c.lineWidth = width; c.beginPath(); for (let k = -s; k <= s * 2; k += gap) { c.moveTo(k, s); c.lineTo(k + s, 0); } c.stroke(); const pattern = ctx.createPattern(tile, "repeat"); pattern?.setTransform(new DOMMatrix().scale(0.5, 0.5)); hatchCache.set(key, pattern); return pattern; } // Rounded rect path with independent top and bottom radii (bars: round data end, square baseline). export function roundRectPath( ctx: CanvasRenderingContext2D, x: number, y: number, w: number, h: number, rTop: number, rBottom = 0, ) { if (w <= 0 || h <= 0) return; const rt = Math.min(rTop, w / 2, h / 2); const rb = Math.min(rBottom, w / 2, h / 2); ctx.moveTo(x + rt, y); ctx.lineTo(x + w - rt, y); if (rt) ctx.arcTo(x + w, y, x + w, y + rt, rt); ctx.lineTo(x + w, y + h - rb); if (rb) ctx.arcTo(x + w, y + h, x + w - rb, y + h, rb); ctx.lineTo(x + rb, y + h); if (rb) ctx.arcTo(x, y + h, x, y + h - rb, rb); ctx.lineTo(x, y + rt); if (rt) ctx.arcTo(x, y, x + rt, y, rt); ctx.closePath(); } export interface PlacedLabel { text: string; x: number; y: number; /** translate percentages applied after the position, e.g. -50 to centre. */ ax?: number; ay?: number; opacity?: number; } // Writes a pool of absolutely positioned label spans from the loop: text only when it changes, // position by transform only. Unused spans hide. export function writeLabels(els: (HTMLElement | null)[], cache: string[], items: PlacedLabel[]) { for (let i = 0; i < els.length; i++) { const el = els[i]; if (!el) continue; const it = items[i]; if (!it) { if (el.style.opacity !== "0") el.style.opacity = "0"; continue; } if (cache[i] !== it.text) { cache[i] = it.text; el.textContent = it.text; } el.style.opacity = String(it.opacity ?? 1); el.style.transform = `translate3d(${it.x.toFixed(2)}px, ${it.y.toFixed(2)}px, 0) translate(${it.ax ?? 0}%, ${it.ay ?? -50}%)`; } } a6:Td34,"use client"; import { useCallback, useEffect, useMemo, useRef, type RefObject } from "react"; export interface VisibleLoopOptions { enabled?: boolean; fpsCap?: number; rootMargin?: string; } /** * Runs `frame(dt, t)` on requestAnimationFrame while the element is near the viewport, * the tab is visible and `enabled` is not false. Return `false` from `frame` to go idle * until `wake()` is called. Writes `data-loop` on the element: running, idle or paused. */ export function useVisibleLoop( ref: RefObject, frame: (dt: number, t: number) => boolean | void, opts?: VisibleLoopOptions, ): { wake: () => void } { const enabled = opts?.enabled !== false; const fpsCap = opts?.fpsCap ?? 0; const rootMargin = opts?.rootMargin ?? "96px"; const frameRef = useRef(frame); useEffect(() => { frameRef.current = frame; }, [frame]); const wakeRef = useRef<() => void>(() => {}); const wake = useCallback(() => wakeRef.current(), []); useEffect(() => { const el = ref.current; if (!el || typeof window === "undefined") return; let wants = true; // false once the frame callback returns false let inView = false; let raf = 0; let last = 0; let t = 0; const minFrame = fpsCap > 0 ? 1000 / fpsCap : 0; const canRun = () => enabled && inView && document.visibilityState === "visible"; const stop = () => { if (raf) cancelAnimationFrame(raf); raf = 0; }; const update = () => { if (!enabled) { stop(); el.dataset.loop = "paused"; return; } if (!wants) { stop(); el.dataset.loop = "idle"; return; } if (!canRun()) { stop(); el.dataset.loop = "paused"; return; } el.dataset.loop = "running"; if (!raf) { last = performance.now(); raf = requestAnimationFrame(tick); } }; const tick = (now: number) => { raf = 0; if (!canRun() || !wants) { update(); return; } const elapsed = now - last; if (minFrame && elapsed < minFrame - 0.5) { raf = requestAnimationFrame(tick); return; } last = now; const dt = Math.min(0.05, Math.max(0, elapsed / 1000)); t += dt; const keep = frameRef.current(dt, t); if (keep === false) { wants = false; update(); return; } raf = requestAnimationFrame(tick); }; const observer = new IntersectionObserver( ([entry]) => { inView = entry.isIntersecting; update(); }, { rootMargin }, ); observer.observe(el); const onVisibility = () => update(); document.addEventListener("visibilitychange", onVisibility); wakeRef.current = () => { wants = true; update(); }; update(); return () => { stop(); observer.disconnect(); document.removeEventListener("visibilitychange", onVisibility); wakeRef.current = () => {}; }; }, [ref, enabled, fpsCap, rootMargin]); return useMemo(() => ({ wake }), [wake]); } // matchMedia based check. False on the server. export function isCoarsePointer(): boolean { if (typeof window === "undefined" || typeof window.matchMedia !== "function") return false; return window.matchMedia("(pointer: coarse)").matches; } a7:T5ec,"use client"; import { useEffect, useState, type RefObject } from "react"; import { isCoarsePointer } from "./loop"; // Caps DPR at 1.5 on coarse pointers and 2 otherwise. export function defaultMaxDpr(): number { return isCoarsePointer() ? 1.5 : 2; } // Sets the backing size for a CSS box and returns the DPR used. export function sizeCanvas( canvas: HTMLCanvasElement, cssW: number, cssH: number, maxDpr: number = defaultMaxDpr(), ): number { const dpr = Math.min(typeof window !== "undefined" ? window.devicePixelRatio || 1 : 1, maxDpr); canvas.width = Math.max(1, Math.round(cssW * dpr)); canvas.height = Math.max(1, Math.round(cssH * dpr)); canvas.style.width = `${cssW}px`; canvas.style.height = `${cssH}px`; return dpr; } // Rounded size of an element, kept current with a ResizeObserver. export function useElementSize(ref: RefObject): { width: number; height: number } { const [size, setSize] = useState({ width: 0, height: 0 }); useEffect(() => { const el = ref.current; if (!el || typeof ResizeObserver === "undefined") return; const observer = new ResizeObserver((entries) => { const box = entries[0]?.contentRect; if (!box) return; const width = Math.round(box.width); const height = Math.round(box.height); setSize((prev) => (prev.width === width && prev.height === height ? prev : { width, height })); }); observer.observe(el); return () => observer.disconnect(); }, [ref]); return size; } a8:T835,// Shared springs, easings and durations. Components import these instead of inventing values. export const springs = { press: { type: "spring", stiffness: 500, damping: 30, mass: 0.6 }, snappy: { type: "spring", stiffness: 400, damping: 25, mass: 1 }, standard: { type: "spring", stiffness: 300, damping: 30, mass: 0.8 }, soft: { type: "spring", stiffness: 200, damping: 25, mass: 1.2 }, settle: { type: "spring", stiffness: 380, damping: 30, mass: 0.8 }, blurIn: { type: "spring", stiffness: 400, damping: 28, mass: 0.6 }, } as const; export const ease = { out: [0.23, 1, 0.32, 1], inOut: [0.77, 0, 0.175, 1], drawer: [0.32, 0.72, 0, 1], } as const; export const easeCss = { out: "cubic-bezier(0.23,1,0.32,1)", inOut: "cubic-bezier(0.77,0,0.175,1)", drawer: "cubic-bezier(0.32,0.72,0,1)", } as const; export const durations = { press: 140, tooltip: 160, menu: 200, panel: 280 } as const; // ms // Cubic bezier easing for canvas and rAF code. Returns progress y for input x in [0, 1]. export function cubicBezier(x1: number, y1: number, x2: number, y2: number): (t: number) => number { const cx = 3 * x1; const bx = 3 * (x2 - x1) - cx; const ax = 1 - cx - bx; const cy = 3 * y1; const by = 3 * (y2 - y1) - cy; const ay = 1 - cy - by; const sampleX = (s: number) => ((ax * s + bx) * s + cx) * s; const sampleY = (s: number) => ((ay * s + by) * s + cy) * s; const sampleDX = (s: number) => (3 * ax * s + 2 * bx) * s + cx; const solveX = (x: number) => { let s = x; for (let i = 0; i < 8; i++) { const err = sampleX(s) - x; if (Math.abs(err) < 1e-6) return s; const d = sampleDX(s); if (Math.abs(d) < 1e-6) break; s -= err / d; } let lo = 0; let hi = 1; s = x; while (lo < hi) { const v = sampleX(s); if (Math.abs(v - x) < 1e-6) return s; if (x > v) lo = s; else hi = s; s = (lo + hi) / 2; if (hi - lo < 1e-7) break; } return s; }; return (t: number) => { if (t <= 0) return 0; if (t >= 1) return 1; return sampleY(solveX(t)); }; } a9:T3085,"use client"; // Shared chart chrome for the Charts collection: theme vars, the hover tooltip, legend keys and the // screen-reader table twin every chart ships with. import { forwardRef, memo, useEffect, useImperativeHandle, useLayoutEffect, useRef, useState, type CSSProperties, type ReactNode } from "react"; import { useReducedMotion } from "framer-motion"; import { cn } from "@/lib/utils"; import { BJORK_PALETTE, type BjorkTone } from "@/components/bjork-ui/_core/palette"; import { useBjorkTone } from "@/components/bjork-ui/_core/tone"; import { LiveRegion } from "@/components/bjork-ui/_core/a11y"; import { surfaceVars } from "@/components/bjork-ui/_core/surface"; export type ChartPalette = (typeof BJORK_PALETTE)[BjorkTone]; // Tokens a chart root writes so DOM overlays follow `tone` even outside a themed page. export function chartVars(pal: ChartPalette): CSSProperties { return { ...surfaceVars(pal === BJORK_PALETTE.light ? "light" : "dark"), "--bjork-accent": pal.accent, "--bjork-accent-ink": pal.accentInk, "--bjork-accent-fill": pal.accentFill, "--bjork-accent-soft": pal.accentSoft, "--bjork-accent-foreground": pal.accentFg, "--bjork-text": pal.text, "--bjork-text-medium": pal.textMedium, "--bjork-text-muted": pal.textMuted, "--bjork-text-soft": pal.textSoft, "--bjork-text-faint": pal.textFaint, "--bjork-hair": pal.hair, "--bjork-border": pal.border, "--bjork-border-strong": pal.borderStrong, "--bjork-surface": pal.surface, "--bjork-surface-hover": pal.raised, "--bjork-ring-offset": pal.bg, // The surface a chart sits on, for label halos and cut-outs. Override it on the root if needed. "--bjork-chart-bg": pal.stage, "--bjork-success": pal.success, "--bjork-warning": pal.warning, "--bjork-error": pal.error, } as CSSProperties; } // Tone, palette, reduced motion and root vars in one call. export function useChartTheme(toneProp?: BjorkTone) { const tone = useBjorkTone(toneProp); const pal = BJORK_PALETTE[tone]; const reduce = !!useReducedMotion(); return { tone, pal, reduce, vars: chartVars(pal) }; } // Focus ring shared by every focusable plot surface. export const chartFocusRing = "outline-none focus-visible:ring-2 focus-visible:ring-[color:var(--bjork-accent)] focus-visible:ring-offset-2 focus-visible:ring-offset-[color:var(--bjork-ring-offset)]"; // Mono label style: 10px Geist Mono, tabular, cap-trimmed. export const chartMono = "font-mono text-[10px] leading-none tabular-nums [text-box:trim-both_cap_alphabetic]"; // Floating chart surfaces follow the library canon (_core/surface.ts): a 1px border plus the inset light // shadow. Hover cards take the full surface shadow; small readout tags take the soft one. Colours come // from chartVars, so light and dark both follow the tone. export const chartCardEdge = "border border-[color:var(--bjork-border)] shadow-[var(--bjork-shadow-surface)]"; export const chartTagEdge = "border border-[color:var(--bjork-border)] shadow-[var(--bjork-shadow-soft)]"; export interface TooltipRow { key?: string; label: ReactNode; value: ReactNode; color?: string; dashed?: boolean; strong?: boolean; } // The hover card. Values lead, labels follow, series keyed with a short line in the series colour. // Position it with `style.transform` from the caller; it never takes pointer events. export const ChartTooltip = forwardRef< HTMLDivElement, { title?: ReactNode; rows: TooltipRow[]; visible: boolean; className?: string; style?: CSSProperties; tipKey?: string } >(function ChartTooltip({ title, rows, visible, className, style, tipKey }, ref) { return ( ); }); // Places a tooltip of size (tw, th) next to (x, y) inside a (w, h) box, flipping away from edges. export function placeTooltip( x: number, y: number, tw: number, th: number, w: number, h: number, gap = 12, ): { x: number; y: number } { let tx = x + gap; if (tx + tw > w) tx = x - gap - tw; if (tx < 0) tx = Math.max(0, Math.min(w - tw, x - tw / 2)); let ty = y - th - gap; if (ty < 0) ty = Math.min(h - th, y + gap); return { x: Math.round(tx), y: Math.round(Math.max(0, ty)) }; } export interface LegendItem { id: string; label: string; color: string; shape?: "line" | "dash" | "rect" | "dot"; muted?: boolean; } // A legend row. Keys mirror the mark: line for lines, rect for areas and bars. export function ChartLegend({ items, className, onHover, activeId, }: { items: LegendItem[]; className?: string; onHover?: (id: string | null) => void; activeId?: string | null; }) { return (

{items.map((it) => { const dim = (activeId && activeId !== it.id) || it.muted; return ( onHover(it.id) : undefined} onPointerLeave={onHover ? () => onHover(null) : undefined} className={cn( "inline-flex items-center gap-1.5 font-bjork-alpha text-[11px] font-medium leading-3 transition-opacity duration-150 ease-out", dim ? "opacity-45" : "opacity-100", "text-[color:var(--bjork-text-medium)]", )} > {it.label} ); })}

); } export function LegendKey({ color, shape = "rect" }: { color: string; shape?: LegendItem["shape"] }) { if (shape === "line") return ; if (shape === "dash") return ; if (shape === "dot") return ; return ; } // The table twin. Every value the chart shows is reachable here without hovering. // Memoised: hover state re-renders the chart, never the table. Pass memoised rows. export const ChartTable = memo(function ChartTable({ caption, columns, rows, }: { caption: string; columns: string[]; rows: (string | number)[][]; }) { return ( {columns.map((c) => ( ))} {rows.map((r, i) => ( {r.map((cell, j) => j === 0 ? ( ) : ( ), )} ))}

{caption}
{c}
{cell}	{cell}

); }); // A pool of absolutely positioned spans the draw loop fills through `writeLabels`. export function LabelPool({ count, pool, className, }: { count: number; pool: { current: (HTMLSpanElement | null)[] }; className?: string; }) { return ( <> {Array.from({ length: count }).map((_, i) => ( { pool.current[i] = el; }} aria-hidden="true" className={cn( "pointer-events-none absolute left-0 top-0 whitespace-nowrap opacity-0", className ?? "font-mono text-[10px] leading-none tabular-nums text-[color:var(--bjork-text-faint)] [text-box:trim-both_cap_alphabetic]", )} /> ))} ); } export interface TooltipContent { key: string; title?: ReactNode; rows: TooltipRow[]; } export interface TooltipHandle { /** Shows `content`, or hides with `null`. Same key is a no-op. */ set: (content: TooltipContent | null) => void; readonly el: HTMLDivElement | null; /** Measured size of the current content. */ readonly size: { w: number; h: number }; } // A tooltip that owns its state, so hovering re-renders only the tooltip, never the chart. // The chart positions it from its draw loop through `handle.el.style.transform`. export const HoverTooltip = forwardRef void; className?: string }>(function HoverTooltip( { onMeasure, className }, ref, ) { const [state, setState] = useState<{ content: TooltipContent | null; last: TooltipContent | null }>({ content: null, last: null }); const elRef = useRef(null); const size = useRef({ w: 0, h: 0 }); const onMeasureRef = useRef(onMeasure); useEffect(() => { onMeasureRef.current = onMeasure; }); useImperativeHandle( ref, () => ({ set: (content) => setState((prev) => { if ((prev.content?.key ?? null) === (content?.key ?? null)) return prev; return { content, last: content ?? prev.last }; }), get el() { return elRef.current; }, get size() { return size.current; }, }), [], ); useLayoutEffect(() => { const el = elRef.current; if (!el) return; size.current = { w: el.offsetWidth, h: el.offsetHeight }; onMeasureRef.current?.(); }, [state.last]); const shown = state.content ?? state.last; return ; }); export interface AnnouncerHandle { say: (message: string) => void; } // Polite live region with a 250ms trailing throttle, isolated from the chart's renders. export const ChartAnnouncer = forwardRef(function ChartAnnouncer({ ms = 250 }, ref) { const [message, setMessage] = useState(""); const at = useRef(0); const timer = useRef | null>(null); useEffect( () => () => { if (timer.current) clearTimeout(timer.current); }, [], ); useImperativeHandle( ref, () => ({ say: (text: string) => { const now = performance.now(); if (timer.current) clearTimeout(timer.current); if (now - at.current >= ms) { at.current = now; setMessage(text); } else { timer.current = setTimeout(() => { at.current = performance.now(); setMessage(text); }, ms); } }, }), [ms], ); return ; }); aa:Tccd,import type { CSSProperties } from "react"; import type { BjorkTone } from "./palette"; // The library surface (CANON.md §1). Values mirror app/globals.css :root and .dark. Change both together. export const BJORK_SURFACE = { light: { surface: "#fffcf6", surfaceMuted: "rgba(250, 246, 237, 0.94)", surfaceHover: "#f5efe3", surfaceActive: "#efe7d8", panel: "#f8f2e7", menu: "rgba(255, 252, 246, 0.98)", field: "rgba(255, 252, 246, 0.96)", fieldMuted: "rgba(248, 242, 231, 0.82)", fieldInset: "rgba(239, 231, 216, 0.72)", border: "#eee6db", borderMuted: "#f5ede2", borderStrong: "#e1d7c8", shadowSurface: "inset 0 7px 14px rgba(88, 72, 49, 0.045), inset 0 0.5px 0.5px rgba(255, 255, 255, 0.92), inset 1px 0 0 rgba(88, 72, 49, 0.026), inset -1px 0 0 rgba(255, 255, 255, 0.68), 0 14px 22px -9px rgba(66, 52, 33, 0.11)", shadowSoft: "inset 0 1px 0 rgba(88, 72, 49, 0.045), inset 0 0.5px 0.5px rgba(255, 255, 255, 0.86)", shadowPanel: "inset 0 1px 0 rgba(88, 72, 49, 0.04), inset 1px 0 0 rgba(88, 72, 49, 0.024), inset -1px 0 0 rgba(255, 255, 255, 0.64), 0 18px 38px -30px rgba(66, 52, 33, 0.2)", shadowMenu: "inset 0 1px 0 rgba(88, 72, 49, 0.04), inset 0 12px 24px rgba(88, 72, 49, 0.022), inset 1px 0 0 rgba(88, 72, 49, 0.024), inset -1px 0 0 rgba(255, 255, 255, 0.62), 0 22px 44px -26px rgba(66, 52, 33, 0.22)", shadowInset: "inset 0 1px 10px rgba(88, 72, 49, 0.12), inset 0 0.5px 0.5px rgba(255, 255, 255, 0.72)", }, dark: { surface: "#121212", surfaceMuted: "rgba(22, 22, 22, 0.92)", surfaceHover: "#161616", surfaceActive: "#202020", panel: "#0d0d0d", menu: "rgba(18, 18, 18, 0.98)", field: "rgba(18, 18, 18, 0.95)", fieldMuted: "rgba(18, 18, 18, 0.55)", fieldInset: "rgba(9, 9, 9, 0.75)", border: "#232323", borderMuted: "#1c1c1c", borderStrong: "#343434", shadowSurface: "inset 0 7px 14px rgba(255, 255, 255, 0.03), inset 0 0.5px 0.5px rgba(255, 255, 255, 0.06), 0 14px 20px -6px rgba(0, 0, 0, 0.45)", shadowSoft: "inset 0 1px 0 rgba(255, 255, 255, 0.045)", shadowPanel: "inset 0 1px 0 rgba(255, 255, 255, 0.035), 0 18px 36px -28px rgba(0, 0, 0, 0.9)", shadowMenu: "inset 0 1px 0 rgba(255, 255, 255, 0.055), inset 0 12px 24px rgba(255, 255, 255, 0.018), inset 0 -18px 26px rgba(0, 0, 0, 0.24), 0 22px 42px -22px rgba(0, 0, 0, 0.9)", shadowInset: "inset 0 1px 10px rgba(0, 0, 0, 0.45)", }, } as const; /** Writes the surface tokens for a pinned tone as --bjork-* custom properties. Spread first; kit-specific keys may override. */ export function surfaceVars(tone: BjorkTone): CSSProperties { const s = BJORK_SURFACE[tone]; return { "--bjork-surface": s.surface, "--bjork-surface-muted": s.surfaceMuted, "--bjork-surface-hover": s.surfaceHover, "--bjork-surface-active": s.surfaceActive, "--bjork-panel": s.panel, "--bjork-menu": s.menu, "--bjork-field": s.field, "--bjork-field-muted": s.fieldMuted, "--bjork-field-inset": s.fieldInset, "--bjork-border": s.border, "--bjork-border-muted": s.borderMuted, "--bjork-border-strong": s.borderStrong, "--bjork-shadow-surface": s.shadowSurface, "--bjork-shadow-soft": s.shadowSoft, "--bjork-shadow-panel": s.shadowPanel, "--bjork-shadow-menu": s.shadowMenu, "--bjork-shadow-inset": s.shadowInset, } as CSSProperties; } ab:T26b2,// Shared chart math for the Charts collection: nice ticks, scales, damping, colour and number formatting. // Pure functions only. Every chart imports what it needs by path. export function clamp(v: number, lo: number, hi: number): number { return v < lo ? lo : v > hi ? hi : v; } export function lerp(a: number, b: number, t: number): number { return a + (b - a) * t; } // Maps v from [d0, d1] to [r0, r1]. Degenerate domains map to the range midpoint. export function scaleLinear(d0: number, d1: number, r0: number, r1: number): (v: number) => number { const span = d1 - d0; if (!(Math.abs(span) > 1e-12)) return () => (r0 + r1) / 2; const k = (r1 - r0) / span; return (v: number) => r0 + (v - d0) * k; } // Frame-rate independent approach: moves `cur` toward `target` with time constant `tau` seconds. export function damp(cur: number, target: number, tau: number, dt: number): number { if (tau <= 0) return target; return target + (cur - target) * Math.exp(-dt / tau); } // A "nice" step (1, 2, 2.5 or 5 x 10^k) that splits `span` into roughly `count` intervals. export function niceStep(span: number, count = 5): number { if (!(span > 0) || !Number.isFinite(span)) return 1; const raw = span / Math.max(1, count); const mag = 10 ** Math.floor(Math.log10(raw)); const r = raw / mag; const m = r <= 1 ? 1 : r <= 2 ? 2 : r <= 2.5 ? 2.5 : r <= 5 ? 5 : 10; return m * mag; } // Tick values at a nice step, inclusive of the domain ends when they land on the step. export function niceTicks(lo: number, hi: number, count = 5): number[] { if (!(hi > lo)) return [lo]; const step = niceStep(hi - lo, count); const first = Math.ceil(lo / step - 1e-9); const last = Math.floor(hi / step + 1e-9); const out: number[] = []; for (let n = first; n <= last; n++) out.push(Number((n * step).toFixed(12))); return out; } // Expands [lo, hi] outward to the nearest nice step, so the outer gridlines sit on round values. export function niceDomain(lo: number, hi: number, count = 5): [number, number] { if (!(hi > lo)) { const pad = Math.max(Math.abs(hi) * 0.1, 1); return [lo - pad, hi + pad]; } const step = niceStep(hi - lo, count); return [Math.floor(lo / step + 1e-9) * step, Math.ceil(hi / step - 1e-9) * step]; } // Half-pixel snap for crisp 1px hairlines. export function crisp(v: number): number { return Math.round(v) + 0.5; } // --- Colour ------------------------------------------------------------------------------------- const rgbCache = new Map(); // Parses #rgb, #rrggbb and rgba()/rgb() strings. Returns [r, g, b, a]. export function parseColor(c: string): [number, number, number, number] { const hit = rgbCache.get(c); if (hit) return hit; let out: [number, number, number, number] = [0, 0, 0, 1]; const s = c.trim(); if (s.startsWith("#")) { let h = s.slice(1); if (h.length === 3) h = h.split("").map((ch) => ch + ch).join(""); const n = parseInt(h.slice(0, 6), 16); out = [(n >> 16) & 255, (n >> 8) & 255, n & 255, 1]; } else { const m = s.match(/rgba?$([^)]+)$/); if (m) { const p = m[1].split(",").map((x) => parseFloat(x)); out = [p[0] ?? 0, p[1] ?? 0, p[2] ?? 0, p[3] ?? 1]; } } rgbCache.set(c, out); return out; } // The colour at alpha `a`, multiplied with any alpha the colour already has. export function withAlpha(c: string, a: number): string { const [r, g, b, a0] = parseColor(c); return `rgba(${r},${g},${b},${+(a0 * a).toFixed(4)})`; } // Mixes two opaque colours in sRGB. t = 0 gives `a`. export function mixColor(a: string, b: string, t: number): string { const ca = parseColor(a); const cb = parseColor(b); const r = Math.round(lerp(ca[0], cb[0], t)); const g = Math.round(lerp(ca[1], cb[1], t)); const bl = Math.round(lerp(ca[2], cb[2], t)); return `rgb(${r},${g},${bl})`; } // --- Numbers ------------------------------------------------------------------------------------ const fmtCache = new Map(); function nf(opts: Intl.NumberFormatOptions): Intl.NumberFormat { const key = JSON.stringify(opts); let f = fmtCache.get(key); if (!f) { f = new Intl.NumberFormat("en-US", opts); fmtCache.set(key, f); } return f; } export function formatNumber(v: number, digits = 1): string { if (!Number.isFinite(v)) return "–"; return nf({ maximumFractionDigits: digits, minimumFractionDigits: 0 }).format(v); } export function formatFixed(v: number, digits = 2): string { if (!Number.isFinite(v)) return "–"; return nf({ maximumFractionDigits: digits, minimumFractionDigits: digits }).format(v); } // 1,284 / 12.9K / 4.2M. Uses a true minus sign. export function formatCompact(v: number, digits = 1): string { if (!Number.isFinite(v)) return "–"; const s = nf({ notation: "compact", maximumFractionDigits: digits }).format(Math.abs(v)); return v < 0 ? `−${s}` : s; } export function formatPercent(v: number, digits = 0): string { if (!Number.isFinite(v)) return "–"; const s = nf({ maximumFractionDigits: digits, minimumFractionDigits: digits }).format(Math.abs(v * 100)); return `${v < 0 ? "−" : ""}${s}%`; } // +1.2 / −0.8 / 0. Signed numbers use a true minus and an explicit plus. export function formatSigned(v: number, format: (n: number) => string = (n) => formatNumber(n)): string { if (!Number.isFinite(v)) return "–"; const body = format(Math.abs(v)); // A value that rounds to zero carries no sign. if (Math.abs(v) < 1e-12 || !/[1-9]/.test(body)) return body; return `${v > 0 ? "+" : "−"}${body}`; } // Gaussian kernel density at x for a sorted sample, bandwidth h. export function kde(sample: number[], x: number, h: number): number { const n = sample.length; if (!n || !(h > 0)) return 0; let s = 0; const inv = 1 / h; for (let i = 0; i < n; i++) { const u = (x - sample[i]) * inv; if (u > 4 || u < -4) continue; s += Math.exp(-0.5 * u * u); } return s / (n * h * Math.sqrt(2 * Math.PI)); } // Silverman's rule of thumb bandwidth. export function silverman(sample: number[]): number { const n = sample.length; if (n < 2) return 1; const mean = sample.reduce((a, b) => a + b, 0) / n; const sd = Math.sqrt(sample.reduce((a, b) => a + (b - mean) ** 2, 0) / (n - 1)); const sorted = [...sample].sort((a, b) => a - b); const iqr = quantile(sorted, 0.75) - quantile(sorted, 0.25); const spread = Math.min(sd, iqr / 1.34) || sd || 1; return 0.9 * spread * n ** -0.2; } // Linear-interpolated quantile of a sorted array. export function quantile(sorted: number[], q: number): number { const n = sorted.length; if (!n) return NaN; if (n === 1) return sorted[0]; const pos = clamp(q, 0, 1) * (n - 1); const lo = Math.floor(pos); const hi = Math.min(n - 1, lo + 1); return sorted[lo] + (sorted[hi] - sorted[lo]) * (pos - lo); } // Standard normal sample from a uniform source (Box-Muller). export function gaussian(rnd: () => number): number { const u = Math.max(rnd(), 1e-9); const v = rnd(); return Math.sqrt(-2 * Math.log(u)) * Math.cos(2 * Math.PI * v); } // --- Time --------------------------------------------------------------------------------------- const HOUR = 3600000; const DAY = 86400000; const timeFmt = { hour: new Intl.DateTimeFormat("en-US", { hour: "numeric", timeZone: "UTC" }), day: new Intl.DateTimeFormat("en-US", { month: "short", day: "numeric", timeZone: "UTC" }), month: new Intl.DateTimeFormat("en-US", { month: "short", timeZone: "UTC" }), monthYear: new Intl.DateTimeFormat("en-US", { month: "short", year: "2-digit", timeZone: "UTC" }), year: new Intl.DateTimeFormat("en-US", { year: "numeric", timeZone: "UTC" }), }; export interface TimeTick { t: number; label: string; } // Calendar-aligned ticks (UTC) for [t0, t1] drawn across `px` pixels, at least `minPx` apart. export function timeTicks(t0: number, t1: number, px: number, minPx = 64): TimeTick[] { const span = t1 - t0; if (!(span > 0) || !(px > 0)) return []; const maxTicks = Math.max(1, Math.floor(px / minPx)); const perTick = span / maxTicks; const out: TimeTick[] = []; const hourSteps = [1, 2, 3, 6, 12]; for (const k of hourSteps) { if (k * HOUR >= perTick) { const step = k * HOUR; for (let t = Math.ceil(t0 / step) * step; t <= t1; t += step) { const d = new Date(t); out.push({ t, label: d.getUTCHours() === 0 ? timeFmt.day.format(t) : timeFmt.hour.format(t) }); } return out; } } const daySteps = [1, 2, 3, 7, 14]; for (const k of daySteps) { if (k * DAY >= perTick) { const step = k * DAY; // Weekly steps land on Mondays. const offset = k === 7 || k === 14 ? 4 * DAY : 0; for (let t = Math.ceil((t0 - offset) / step) * step + offset; t <= t1; t += step) out.push({ t, label: timeFmt.day.format(t) }); return out; } } const monthSteps = [1, 2, 3, 6, 12, 24, 60]; for (const k of monthSteps) { if (k * 30.44 * DAY >= perTick) { const d0 = new Date(t0); let y = d0.getUTCFullYear(); let m = d0.getUTCMonth(); // First boundary at or after t0 that is a multiple of k months. m = Math.ceil(m / k) * k; for (;;) { y += Math.floor(m / 12); m %= 12; const t = Date.UTC(y, m, 1); if (t > t1) break; if (t >= t0) { const label = k >= 12 ? timeFmt.year.format(t) : m === 0 ? timeFmt.monthYear.format(t) : timeFmt.month.format(t); out.push({ t, label }); } m += k; } return out; } } return out; } export function formatDateUTC(t: number, style: "day" | "full" = "day"): string { if (style === "full") return new Date(t).toLocaleDateString("en-US", { weekday: "short", month: "short", day: "numeric", year: "numeric", timeZone: "UTC" }); return timeFmt.day.format(t); } 7e:["$","$La1",null,{"files":[{"path":"components/bjork-ui/charts/state-timeline.tsx","content":"$a2","type":"registry:component","target":"@components/bjork-ui/charts/state-timeline.tsx"},{"path":"lib/utils.ts","content":"import { clsx, type ClassValue } from \"clsx\"\nimport { twMerge } from \"tailwind-merge\"\n\nexport function cn(...inputs: ClassValue[]) {\n return twMerge(clsx(inputs))\n}\n","type":"registry:lib","target":"@lib/utils.ts"},{"path":"components/bjork-ui/_core/palette.ts","content":"$a3","type":"registry:component","target":"@components/bjork-ui/_core/palette.ts"},{"path":"components/bjork-ui/_core/random.ts","content":"$a4","type":"registry:component","target":"@components/bjork-ui/_core/random.ts"},{"path":"components/bjork-ui/charts/_kit/canvas.ts","content":"$a5","type":"registry:component","target":"@components/bjork-ui/charts/_kit/canvas.ts"},{"path":"components/bjork-ui/_core/loop.ts","content":"$a6","type":"registry:component","target":"@components/bjork-ui/_core/loop.ts"},{"path":"components/bjork-ui/_core/canvas.ts","content":"$a7","type":"registry:component","target":"@components/bjork-ui/_core/canvas.ts"},{"path":"components/bjork-ui/_core/motion.ts","content":"$a8","type":"registry:component","target":"@components/bjork-ui/_core/motion.ts"},{"path":"components/bjork-ui/charts/_kit/chrome.tsx","content":"$a9","type":"registry:component","target":"@components/bjork-ui/charts/_kit/chrome.tsx"},{"path":"components/bjork-ui/_core/tone.ts","content":"\"use client\";\n\nimport { useSyncExternalStore } from \"react\";\nimport { useTheme } from \"next-themes\";\nimport type { BjorkTone } from \"./palette\";\n\nconst subscribeNoop = () => () => {};\nconst getMounted = () => true;\nconst getServerMounted = () => false;\n\n/**\n * Resolves the tone for a component. An explicit `tone` always wins.\n * Otherwise it follows next-themes' resolved theme, but only after mount,\n * so the server render and first client render agree on dark.\n */\nexport function useBjorkTone(tone?: BjorkTone): BjorkTone {\n const { resolvedTheme } = useTheme();\n const mounted = useSyncExternalStore(subscribeNoop, getMounted, getServerMounted);\n if (tone) return tone;\n if (!mounted) return \"dark\";\n return resolvedTheme === \"light\" ? \"light\" : \"dark\";\n}\n","type":"registry:component","target":"@components/bjork-ui/_core/tone.ts"},{"path":"components/bjork-ui/_core/a11y.tsx","content":"import type { ReactNode } from \"react\";\n\n// Text for assistive tech only.\nexport function VisuallyHidden({ children }: { children: ReactNode }) {\n return {children};\n}\n\n// Announces `message` when it changes. 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