{"$schema":"https://ui.shadcn.com/schema/registry-item.json","name":"tree-view","type":"registry:component","title":"Tree view","description":"Nested folders and records with the full tree keyboard model (arrows, Home/End, *, type to jump), depth guides, counts and animated opening.","categories":["navigation"],"dependencies":["@radix-ui/react-direction@1.1.4","@radix-ui/react-slot@1.3.3","clsx@^2.1.1","lucide-react@^1.48.0","motion@^13.4.4","tailwind-merge@^3.7.0"],"registryDependencies":["https://beamline.io/registry/look-prism.json"],"files":[{"path":"beamline/components/button/button-variants.ts","type":"registry:file","target":"src/ui/beamline/components/button/button-variants.ts","content":"import { cn } from \"../../lib/utils\";\nimport styles from \"./button.module.css\";\n\nexport type ButtonVariant = \"primary\" | \"secondary\" | \"outline\" | \"ghost\" | \"danger\" | \"accent\";\n/** sm 32 · md 36 · lg 40 · touch 44 (a bottom action bar on a phone). */\nexport type ButtonSize = \"sm\" | \"md\" | \"lg\" | \"touch\";\n/** Market side: buy fills with --pui-up, sell with --pui-down (a red-up market flips the two tokens, not the code). */\nexport type ButtonTone = \"up\" | \"down\";\n\n/** Which paint role paints each variant: filled variants are solids, the quiet ones keep their own light paint. */\nconst ROLE: Record = {\n primary: \"m-solid\",\n accent: \"m-solid\",\n secondary: \"m-control\",\n outline: undefined,\n ghost: undefined,\n danger: undefined,\n};\n\n/** A variant's paint without the button's layout, for a group that wears one button's look (SplitButton paints the\n * pair as one button and leaves its halves transparent). */\nexport function buttonPaint(variant: ButtonVariant = \"primary\", tone?: ButtonTone) {\n return cn(ROLE[variant], styles[variant], tone && styles[tone]);\n}\n\n/** The classes that make any element look like a Button, for parts that render their own element. */\nexport function buttonClassName({\n variant = \"primary\",\n size = \"md\",\n tone,\n className,\n}: { variant?: ButtonVariant; size?: ButtonSize; tone?: ButtonTone; className?: string } = {}) {\n return cn(styles.root, ROLE[variant], styles[variant], tone && styles[tone], styles[size], className);\n}\n"},{"path":"beamline/components/button/button.module.css","type":"registry:file","target":"src/ui/beamline/components/button/button.module.css","content":"@layer properties, theme, base, components, utilities;\n@layer components {\n /* Button. Every colour, size and duration is a token; a variant only sets the four local properties below. */\n .root {\n --_button-bg: transparent;\n --_button-bg-hover: var(--pui-hover);\n --_button-fg: var(--pui-ink);\n --_button-edge: none;\n --_button-height: var(--pui-control-height-md);\n --_button-pad: 14px;\n position: relative;\n isolation: isolate;\n display: inline-flex;\n align-items: center;\n justify-content: center;\n gap: var(--pui-space-1-5);\n flex-shrink: 0;\n height: var(--_button-height);\n min-width: var(--_button-height);\n /* never wider than its room: in a narrow card the label ends in an ellipsis instead of spilling (the full words\n stay the accessible name) */\n max-width: 100%;\n padding-inline: var(--_button-pad);\n border: 0;\n /* Nested context: inside a frame that sets --pui-nest-radius and --pui-nest-inset (and --pui-nest-ceiling for pills)\n the corner is the shared nested corner (.nest-corner, utilities.css: radius − inset, or the button's own radius\n where that would fall under the chip radius); elsewhere the control radius. --pui-button-radius wins over both. */\n border-radius: var(--pui-button-radius, var(--pui-nested, var(--pui-radius-control)));\n color: var(--_button-fg);\n font-family: var(--pui-font-body);\n font-size: var(--pui-text-sm);\n font-weight: var(--pui-weight-medium);\n line-height: 1;\n letter-spacing: var(--pui-tracking-body);\n white-space: nowrap;\n text-decoration: none;\n cursor: pointer;\n user-select: none;\n -webkit-tap-highlight-color: transparent;\n /* frequency law: hover arrives at 0ms (below), leaves over the ruled departure; opacity and translate are listed\n so a button that waits for attention (.reveal) fades away like every reveal instead of vanishing */\n transition:\n var(--m-transition),\n background-color var(--pui-motion-out) var(--pui-ease-default),\n color var(--pui-motion-out) var(--pui-ease-default),\n opacity var(--pui-motion-out) var(--pui-ease-default),\n translate var(--pui-motion-out) var(--pui-ease-default);\n }\n /* the quiet variants paint themselves; filled and secondary variants are painted by their look role (m-solid,\n m-control), which these zero-specificity rules can never override */\n :where(.root) {\n background: var(--_button-bg);\n box-shadow: var(--_button-edge);\n }\n :where(.root:hover:not(:disabled, [aria-disabled=\"true\"])) {\n background: var(--_button-bg-hover);\n }\n .root:hover:not(:disabled, [aria-disabled=\"true\"]) {\n transition-duration: 0ms;\n }\n /* the asChild form has no motion: a CSS press instead */\n .root:not(button):active {\n transform: scale(0.97);\n }\n .root:disabled,\n .root[aria-disabled=\"true\"]:not([data-loading]) {\n opacity: var(--pui-opacity-disabled);\n cursor: not-allowed;\n }\n .root[data-loading] {\n cursor: progress;\n }\n\n /* Icons: 16px unless the icon says otherwise (zero specificity, so size-5 or an inline size wins) */\n :where(.root) :where(svg) {\n width: var(--pui-icon-md);\n height: var(--pui-icon-md);\n flex-shrink: 0;\n }\n\n .sm {\n --_button-height: var(--pui-control-height-sm);\n --_button-pad: var(--pui-space-2-5);\n /* the base gap (--pui-space-1-5); 5px had no scale step, and 6px also lets the loader's negative margin cancel\n the gap exactly at every size */\n }\n .md {\n --_button-height: var(--pui-control-height-md);\n --_button-pad: 14px;\n }\n .lg {\n --_button-height: var(--pui-control-height-lg);\n --_button-pad: var(--pui-space-4);\n font-size: var(--pui-text-base);\n }\n /* a bottom action bar on a phone: the 44 px touch target (a platform minimum, not a spacing step, so it holds when\n the spacing parameter changes — O1 §14.2), the large label */\n .touch {\n --_button-height: calc(var(--pui-control-height-lg) + 0.25rem);\n --_button-pad: var(--pui-space-5);\n font-size: var(--pui-text-base);\n }\n .root[data-icon-only] {\n padding-inline: 0;\n width: var(--_button-height);\n }\n\n /* the main action: ink on the page, inverted per theme */\n .primary {\n --m-color: var(--pui-ink);\n --_button-fg: var(--pui-ink-inverse);\n }\n .secondary {\n --_button-fg: var(--pui-ink);\n }\n .outline {\n --_button-edge: inset 0 0 0 1px var(--pui-line-strong);\n --_button-bg-hover: var(--pui-hover);\n }\n .ghost {\n --_button-fg: var(--pui-ink-2);\n --_button-bg-hover: var(--pui-hover);\n }\n .ghost:hover:not(:disabled) {\n color: var(--pui-ink);\n }\n .danger {\n --_button-fg: var(--pui-red);\n --_button-edge: inset 0 0 0 1px color-mix(in oklab, var(--pui-red) 42%, transparent);\n --_button-bg-hover: var(--pui-red-tint);\n }\n .accent {\n --m-color: var(--pui-accent);\n --_button-fg: var(--pui-accent-foreground);\n }\n\n /* Market side. Declared after the variants so it wins: a filled variant takes the side's colour and its on-colour\n ink; a quiet variant keeps its paint and colours the label. */\n .up {\n --m-color: var(--pui-up);\n --_button-fg: var(--pui-up);\n }\n .down {\n --m-color: var(--pui-down);\n --_button-fg: var(--pui-down);\n }\n .ghost:is(.up, .down):hover:not(:disabled) {\n color: var(--_button-fg);\n }\n .primary.up,\n .accent.up {\n --_button-fg: var(--pui-on-up);\n }\n .primary.down,\n .accent.down {\n --_button-fg: var(--pui-on-down);\n }\n\n /* The main actions' light, where the look provides one, as a spectrum. Glow spills a soft light in the brand's\n spectrum from under the button's bottom edge (clipped at it, so it never tints the face) that brightens under the\n pointer. Prism keeps it inside the glass (--m-solid-glow-fit: 1): the face the light leaves by, the bottom edge,\n splits it into a crisp line with a faint wash rising into the face, only while pointed at. Every other look\n leaves --m-solid-glow at none, so the layer does not exist. */\n .primary::after,\n .accent::after {\n --_fit: var(--m-solid-glow-fit, 0);\n content: var(--m-solid-glow);\n position: absolute;\n z-index: -1;\n top: calc((1 - var(--_fit)) * (100% + var(--m-solid-glow-gap, 0px)));\n inset-inline: var(--m-solid-glow-inset, 14%);\n height: var(--m-solid-glow-height, 14px);\n border-radius: calc(\n var(--_fit) * var(--pui-button-radius, var(--pui-nested, var(--pui-radius-control))) + (1 - var(--_fit)) *\n var(--pui-radius-pill)\n );\n background: var(--m-spectrum);\n background-size: var(--m-spectrum-size, 100% 100%);\n /* the part of the spectrum that shows: this button's own angle (--m-prism-seed, new at every press), turned by\n where the pointer is across the face (--m-prism-x) in a look that turns it (--m-solid-glow-turn) */\n background-position: calc((var(--m-prism-seed, 0.3) + var(--m-prism-x, 0.5) * var(--m-solid-glow-turn, 0)) * 100%) 0;\n filter: blur(var(--m-solid-glow-blur, 9px));\n clip-path: var(--m-solid-glow-clip, inset(0 -32px -32px -32px));\n mask: var(--m-solid-glow-mask, none);\n mask-position:\n 0 0,\n calc(var(--m-prism-seed, 0.3) * 100%) 0;\n mask-composite: intersect;\n opacity: var(--m-solid-glow-rest, 0.75);\n scale: var(--m-solid-glow-scale, 1) 1;\n pointer-events: none;\n transition:\n opacity var(--pui-motion-out) var(--pui-ease-default),\n scale var(--pui-motion-out) var(--pui-ease-default),\n background-position var(--pui-duration-considered) var(--pui-ease-default),\n mask-position var(--pui-duration-considered) var(--pui-ease-default);\n }\n /* pointed at: the light brightens (glow) or grows out from the centre and drifts along while the pointer stays\n (prism) */\n .primary:hover::after,\n .accent:hover::after {\n opacity: 1;\n scale: 1 1;\n transition-duration: var(--m-solid-glow-in, 0ms);\n animation: var(--m-solid-glow-flow, none);\n }\n /* A change of word or colour (Save → Saved, a tone turning green) passes a band of split light across the face once,\n in a look that has one (prism: --m-solid-shift-light; the pen hook's ::before is free on a solid otherwise). */\n .primary[data-shift]::before,\n .accent[data-shift]::before {\n content: var(--m-solid-shift-light, none);\n position: absolute;\n inset: 0;\n z-index: -1;\n border: 0;\n border-radius: inherit;\n background: var(--m-spectrum) 0 0 / var(--m-spectrum-size, 100% 100%);\n mask: linear-gradient(105deg, transparent 39%, #000 47.5%, #000 52.5%, transparent 61%) 0 0 / 300% 100% no-repeat;\n opacity: 0;\n animation: prism-shift calc(var(--pui-duration-considered) * 2.2) var(--pui-ease-default);\n pointer-events: none;\n }\n @keyframes prism-shift {\n from {\n mask-position: 100% 0;\n opacity: 0.25;\n }\n 35% {\n opacity: 0.55;\n }\n to {\n mask-position: 0 0;\n opacity: 0;\n }\n }\n @media (prefers-reduced-motion: reduce) {\n .primary::after,\n .accent::after {\n transition: none;\n animation: none !important;\n }\n .primary[data-shift]::before,\n .accent[data-shift]::before {\n content: none;\n }\n }\n .root:disabled::after,\n .root[aria-disabled=\"true\"]::after {\n content: none;\n }\n\n /* The loader opens its own width, and the negative margin cancels the gap so the label does not jump */\n .loader {\n display: inline-flex;\n overflow: hidden;\n margin-inline-end: calc(var(--pui-space-1-5) * -1);\n }\n .loader > * {\n margin-inline-end: var(--pui-space-1-5);\n }\n .spinner {\n color: currentColor;\n }\n .root[data-icon-only] .loader {\n margin-inline-end: 0;\n }\n .root[data-icon-only] .loader > * {\n margin-inline-end: 0;\n }\n\n /* The label holds its place while the text inside swaps; the leaving text pops out of flow against it */\n .label {\n position: relative;\n display: inline-flex;\n justify-content: center;\n min-width: 0;\n overflow: visible;\n }\n /* the clip box is let out by a little over a line so descenders are never cut, without changing the layout */\n .text {\n display: inline-block;\n max-width: 100%;\n margin-block: -0.2em;\n padding-block: 0.2em;\n overflow: hidden;\n text-overflow: ellipsis;\n white-space: nowrap;\n }\n .label[data-morphing] > .text {\n overflow: visible;\n text-overflow: clip;\n }\n}\n\n@layer components {\n :global(.pui[data-motion=\"reduced\"]) .root:not(button):active,\n :global(.pui[data-motion=\"none\"]) .root:not(button):active {\n transform: none;\n }\n @media (prefers-reduced-motion: reduce) {\n .root:not(button):active {\n transform: none;\n }\n }\n}\n/* CSS-module composition only; visual rules stay in the component layer. */\n.root {\n composes: nest-corner from global;\n}\n"},{"path":"beamline/components/button/button.tsx","type":"registry:file","target":"src/ui/beamline/components/button/button.tsx","content":"\"use client\";\n\nimport { useMessages } from \"../../runtime/localization\";\nimport { english as englishMessages } from \"./messages\";\nimport {\n Children,\n Fragment,\n isValidElement,\n useLayoutEffect,\n useRef,\n type ButtonHTMLAttributes,\n type PointerEvent,\n type ReactNode,\n type Ref,\n type RefObject,\n type ComponentProps,\n} from \"react\";\nimport { AnimatePresence, LazyMotion, m, spring, useIsPresent } from \"motion/react\";\nimport { animate } from \"motion/mini\";\nimport * as Slot from \"@radix-ui/react-slot\";\nimport { Spinner } from \"../spinner/spinner\";\nimport type { BuiltInLook as Look } from \"../../runtime/preset\";\nimport { useComposedRef } from \"../../hooks/use-composed-ref\";\nimport { useMotionTokens } from \"../../hooks/use-motion-tokens\";\nimport { cn } from \"../../lib/utils\";\nimport styles from \"./button.module.css\";\n\nexport type { ButtonVariant, ButtonSize, ButtonTone } from \"./button-variants\";\nexport { buttonPaint, buttonClassName } from \"./button-variants\";\nimport { buttonClassName, type ButtonVariant, type ButtonSize, type ButtonTone } from \"./button-variants\";\nimport type { ButtonDefaults } from \"./defaults\";\nexport type { ButtonDefaults } from \"./defaults\";\nimport { useComponentDefaults } from \"../../runtime/appearance\";\nimport { useReducedMotionSafe } from \"../../hooks/use-reduced-motion-safe\";\n\ntype NativeProps = Omit<\n ButtonHTMLAttributes,\n \"onDrag\" | \"onDragEnd\" | \"onDragStart\" | \"onAnimationStart\"\n>;\n\nexport interface ButtonProps extends NativeProps {\n /** Visual weight: primary (ink-filled), secondary, outline, ghost, danger, or accent (filled with the brand). */\n variant?: ButtonVariant;\n /** Height 32 / 36 / 40 px; touch 44 px for a bottom action bar on a phone. */\n size?: ButtonSize;\n /** Market side. On primary/accent the fill becomes --pui-up (buy) or --pui-down (sell); on the quiet variants the\n * label takes that colour. Pair it with a word or arrow: colour is never the only signal. */\n tone?: ButtonTone;\n /** Shows a loader in front of the label, sets aria-busy and ignores clicks; size and focus stay. */\n loading?: boolean;\n classNames?: Partial>;\n /** Paint this button in another look than the one in force around it (DESIGN-LANGUAGE.md \"Looks\"). */\n look?: Look;\n /** Render the single child (a link, a Radix trigger) with the button's look instead of a \n \n ) : status?.state === \"loading\" || (!kids && node.hasChildren && loadChildren) ? (\n <>\n \n {i18n(\"loading\")}\n \n ) : (\n {i18n(\"empty\")}\n )}\n \n \n )}\n \n \n )}\n \n );\n });\n\n return (\n \n {chosen && (\n
  • \n )}\n {render(nodes, 1)}\n \n );\n}\n\nexport default TreeView;\n"},{"path":"beamline/hooks/use-active.ts","type":"registry:file","target":"src/ui/beamline/hooks/use-active.ts","content":"\"use client\";\n\nimport { useContext, useEffect, useState, type RefObject } from \"react\";\n\nimport { ActivityContext } from \"../runtime/activity\";\n\n/**\n * Whether an animated element should be doing work: it is (nearly) on screen and the tab is visible. Every\n * continuously animated component gates its loop, shader or CSS animation on this, so an effect scrolled out of view,\n * behind another tab, or in a collapsed panel costs nothing. One IntersectionObserver per element; no polling.\n */\nexport function useActive(\n ref: RefObject,\n {\n margin = \"120px\",\n key,\n idle = true,\n }: {\n margin?: string;\n /** Re-attach when this changes (an element that mounts later). */\n key?: unknown;\n /** Pause continuous work at the host idle boundary. Finite sequences set false so they finish. */\n idle?: boolean;\n } = {},\n) {\n const active = useContext(ActivityContext);\n const [inView, setInView] = useState(false);\n const [visible, setVisible] = useState(\n () => typeof document === \"undefined\" || document.visibilityState === \"visible\",\n );\n useEffect(() => {\n const el = ref.current;\n if (!el || typeof IntersectionObserver === \"undefined\") {\n setInView(true);\n return;\n }\n const io = new IntersectionObserver(([e]) => setInView(e.isIntersecting), { rootMargin: margin });\n io.observe(el);\n return () => io.disconnect();\n }, [ref, margin, key]);\n useEffect(() => {\n const on = () => setVisible(document.visibilityState === \"visible\");\n document.addEventListener(\"visibilitychange\", on);\n return () => document.removeEventListener(\"visibilitychange\", on);\n }, []);\n return (!idle || active) && inView && visible;\n}\n"},{"path":"beamline/hooks/use-composed-ref.ts","type":"registry:file","target":"src/ui/beamline/hooks/use-composed-ref.ts","content":"\"use client\";\n\nimport { useCallback, type Ref, type RefObject } from \"react\";\n\n/** Keep a control's measurement/focus ref and the caller's ref, including React 19 callback cleanup. */\nexport function useComposedRef(internal: RefObject, external?: Ref) {\n return useCallback(\n (node: T | null) => {\n internal.current = node;\n if (typeof external === \"function\") {\n const cleanup = external(node);\n if (typeof cleanup === \"function\")\n return () => {\n internal.current = null;\n cleanup();\n };\n } else if (external) external.current = node;\n },\n [internal, external],\n );\n}\n"},{"path":"beamline/hooks/use-contour.ts","type":"registry:file","target":"src/ui/beamline/hooks/use-contour.ts","content":"\"use client\";\n\nimport { useCallback, useLayoutEffect, useRef } from \"react\";\nimport { createContour, type Contour } from \"../lib/contour\";\nimport type { IndicatorBox } from \"./use-indicator\";\n\n/**\n * Puts a decorative surface (a segmented thumb, a tab's pill or line) on the contour engine and moves it to `box`\n * whenever the box changes: the first placement is instant, later ones travel as matter (ui/lib/contour.ts). Returns a\n * ref for the surface. The surface stays aria-hidden; the control's own state has already changed by the time it moves.\n */\nexport function useContour(box: IndicatorBox | null) {\n const contour = useRef(null);\n const ref = useCallback((el: T | null) => {\n contour.current?.destroy();\n contour.current = el ? createContour(el) : null;\n }, []);\n useLayoutEffect(() => {\n // a choice travels; the first placement and a reflow of the same choice are simply there\n if (box) contour.current?.to(box, { instant: !box.ready || box.cause === \"layout\" });\n }, [box]);\n return ref;\n}\n"},{"path":"beamline/hooks/use-controllable.ts","type":"registry:file","target":"src/ui/beamline/hooks/use-controllable.ts","content":"\"use client\";\n\nimport { useCallback, useRef, useState } from \"react\";\n\n/**\n * One value in both forms (rules/CONVENTIONS.md): the prop while it is passed, otherwise the element's own copy that\n * starts at `initial` (a value, or a function that makes it once). The setter takes a value or an updater; an updater\n * reads the latest value even twice in one event, and every change reaches `onChange`, controlled or not.\n * `Next` is what a change can carry when it is narrower than the state: a range that starts empty (null) but is only\n * ever changed to a range.\n */\nexport function useControllable(\n value: T | undefined,\n initial: T | (() => T),\n onChange?: (next: Next) => void,\n) {\n const [own, setOwn] = useState(initial);\n const current = value !== undefined ? value : own;\n const latest = useRef(current);\n latest.current = current;\n const set = useCallback(\n (next: Next | ((was: T) => Next)) => {\n const resolved = typeof next === \"function\" ? (next as (was: T) => Next)(latest.current) : next;\n latest.current = resolved;\n if (value === undefined) setOwn(resolved);\n onChange?.(resolved);\n },\n [value, onChange],\n );\n return [current, set] as const;\n}\n"},{"path":"beamline/hooks/use-deprecated-prop.ts","type":"registry:file","target":"src/ui/beamline/hooks/use-deprecated-prop.ts","content":"\"use client\";\n\nimport { useEffect } from \"react\";\n\n// Bundlers replace NODE_ENV for browser builds; this declaration emits no Node dependency.\ndeclare const process: { env: { NODE_ENV?: string } };\n\nconst warned = new Set();\n\n/** Report a legacy prop once after mount in development; production and server renders stay silent. */\nexport function useDeprecatedProp(component: string, prop: string, replacement: string, supplied: boolean) {\n useEffect(() => {\n if (process.env.NODE_ENV !== \"development\" || !supplied) return;\n const key = `${component}.${prop}`;\n if (warned.has(key)) return;\n warned.add(key);\n console.warn(`[Beamline] ${key} is deprecated. Use ${replacement} instead; the legacy prop still works.`);\n }, [component, prop, replacement, supplied]);\n}\n"},{"path":"beamline/hooks/use-indicator.ts","type":"registry:file","target":"src/ui/beamline/hooks/use-indicator.ts","content":"\"use client\";\n\nimport { APPEARANCE_EVENT } from \"../lib/motion-tokens\";\nimport { useLayoutEffect, useRef, useState, type CSSProperties, type RefObject } from \"react\";\n\nexport interface IndicatorBox {\n x: number;\n y: number;\n w: number;\n h: number;\n /** False on the first placement, so the indicator appears in place instead of sliding in from the corner. */\n ready: boolean;\n /** Which way the last move went on each axis (-1 left or up, 1 right or down, 0 still), for the edge that leads. */\n dx: -1 | 0 | 1;\n dy: -1 | 0 | 1;\n /** choice: a selection changed; layout: the same choice moved because the page reflowed (a resize, a font, a\n * type scale). A surface may travel for a choice and should simply be there after a reflow. */\n cause: \"choice\" | \"layout\";\n}\n\ntype Box = Pick;\nconst same = (a: IndicatorBox | null, b: Box) => a !== null && a.x === b.x && a.y === b.y && a.w === b.w && a.h === b.h;\n\n/**\n * Follows the chosen item inside a container: the thumb of a segmented control, the pill or line of tabs, the ring of\n * radio cards. Returns a ref for the container and the box of the first element matching `selector` in it, relative\n * to the container (null when nothing matches). It measures before paint whenever `key` changes, and again when the\n * container resizes or a selection attribute changes inside it (for parts whose choice lives in a library, like tabs).\n */\nexport function useIndicator(\n selector: string,\n key?: unknown,\n onPlace?: (item: HTMLElement, container: T) => void,\n /** offset (default): the item's offset box, for items whose offset parent is the container. rect: measured on screen\n * relative to the container, for items nested in positioned cells (a calendar day in its table cell). */\n measure: \"offset\" | \"rect\" = \"offset\",\n): [RefObject, IndicatorBox | null] {\n const ref = useRef(null);\n const [box, setBox] = useState(null);\n const placed = useRef(onPlace);\n useLayoutEffect(() => {\n placed.current = onPlace;\n });\n useLayoutEffect(() => {\n const container = ref.current;\n if (!container) return;\n const place = (cause: IndicatorBox[\"cause\"] = \"choice\") => {\n const item = container.querySelector(selector);\n if (!item) {\n setBox(null);\n return;\n }\n let next = { x: item.offsetLeft, y: item.offsetTop, w: item.offsetWidth, h: item.offsetHeight };\n if (measure === \"rect\") {\n const a = item.getBoundingClientRect();\n const c = container.getBoundingClientRect();\n next = {\n x: Math.round(a.left - c.left - container.clientLeft + container.scrollLeft),\n y: Math.round(a.top - c.top - container.clientTop + container.scrollTop),\n w: item.offsetWidth,\n h: item.offsetHeight,\n };\n }\n setBox((b) =>\n same(b, next)\n ? b\n : {\n ...next,\n cause,\n ready: b !== null,\n dx: b ? (Math.sign(next.x - b.x) as IndicatorBox[\"dx\"]) : 0,\n dy: b ? (Math.sign(next.y - b.y) as IndicatorBox[\"dy\"]) : 0,\n },\n );\n placed.current?.(item, container);\n };\n const resizes = typeof ResizeObserver === \"undefined\" ? null : new ResizeObserver(() => place(\"layout\"));\n resizes?.observe(container);\n const observed = new Set();\n const observeItems = () => {\n // A full-width fixed-height list can stay the same size while its tabs/radio choices grow with type or labels.\n // Ignore the decorative indicator itself, whose own dimensions are the output of this measurement.\n const items = new Set([...container.children].filter((child) => child.getAttribute(\"aria-hidden\") !== \"true\"));\n for (const old of observed)\n if (!items.has(old)) {\n resizes?.unobserve(old);\n observed.delete(old);\n }\n for (const item of items)\n if (!observed.has(item)) {\n resizes?.observe(item);\n observed.add(item);\n }\n };\n observeItems();\n place();\n const mutations = new MutationObserver(() => {\n observeItems();\n place(\"choice\");\n });\n mutations.observe(container, {\n subtree: true,\n childList: true,\n attributes: true,\n attributeFilter: [\"data-state\", \"aria-checked\", \"aria-selected\", \"aria-current\", \"data-active\", \"data-open\"],\n });\n const reflow = () => place(\"layout\");\n container.ownerDocument.addEventListener(APPEARANCE_EVENT, reflow);\n container.ownerDocument.fonts?.addEventListener(\"loadingdone\", reflow);\n return () => {\n mutations.disconnect();\n resizes?.disconnect();\n container.ownerDocument.removeEventListener(APPEARANCE_EVENT, reflow);\n container.ownerDocument.fonts?.removeEventListener(\"loadingdone\", reflow);\n };\n }, [selector, key, measure]);\n return [ref, box];\n}\n\n/** The box as custom properties, for a stylesheet to place the indicator with: --pui-indicator-x/-y/-w/-h, and its\n * four edges --pui-glide-l/-r/-t/-b, which the `glide` class moves one at a time. */\nexport function indicatorStyle(box: IndicatorBox): CSSProperties {\n return {\n \"--pui-indicator-x\": `${box.x}px`,\n \"--pui-indicator-y\": `${box.y}px`,\n \"--pui-indicator-w\": `${box.w}px`,\n \"--pui-indicator-h\": `${box.h}px`,\n \"--pui-glide-l\": `${box.x}px`,\n \"--pui-glide-r\": `${box.x + box.w}px`,\n \"--pui-glide-t\": `${box.y}px`,\n \"--pui-glide-b\": `${box.y + box.h}px`,\n } as CSSProperties;\n}\n\nconst AXIS = { x: [\"left\", undefined, \"right\"], y: [\"up\", undefined, \"down\"] } as const;\n\n/** Everything an indicator wearing the `glide` class needs (utilities.css): its place, whether it may move yet, and\n * which way it is going, so the edge on that side leads and the other follows: it stretches toward the new choice and\n * gathers there. */\nexport function glideProps(box: IndicatorBox) {\n return {\n style: indicatorStyle(box),\n \"data-ready\": box.ready ? \"\" : undefined,\n \"data-glide-x\": AXIS.x[box.dx + 1],\n \"data-glide-y\": AXIS.y[box.dy + 1],\n };\n}\n"},{"path":"beamline/hooks/use-media-query.ts","type":"registry:file","target":"src/ui/beamline/hooks/use-media-query.ts","content":"\"use client\";\n\nimport { useSyncExternalStore } from \"react\";\n\n// one MediaQueryList per query: React reads the snapshot on every render, and a part that renders thirty times a\n// second (a playing audio player's clock) would otherwise ask the browser for a new list each time\nconst lists = new Map();\nconst list = (query: string) => {\n if (typeof window === \"undefined\" || typeof window.matchMedia !== \"function\") return undefined;\n let m = lists.get(query);\n if (!m) lists.set(query, (m = window.matchMedia(query)));\n return m;\n};\n\n/** True while the media query matches; false on the server and in the first client render of SSR output. */\nexport function useMediaQuery(query: string): boolean {\n return useSyncExternalStore(\n (notify) => {\n const m = list(query);\n m?.addEventListener(\"change\", notify);\n return () => m?.removeEventListener(\"change\", notify);\n },\n () => list(query)?.matches ?? false,\n () => false,\n );\n}\n\n/** Phone-width layouts: below 768px. */\nexport const usePhone = () => useMediaQuery(\"(max-width: 767px)\");\n"},{"path":"beamline/hooks/use-motion-tokens.ts","type":"registry:file","target":"src/ui/beamline/hooks/use-motion-tokens.ts","content":"\"use client\";\n\nimport { useMemo, type RefObject } from \"react\";\nimport { useAppearanceRoot } from \"../runtime/appearance\";\nimport { useResolvedAppearance } from \"./use-resolved-appearance\";\nimport { motionAt, motionEase, motionTokens, type MotionTokens } from \"../lib/motion-tokens\";\nimport { semanticMotion } from \"../lib/motion-source\";\n\nconst durationToken = (name: string) =>\n name === \"exit\" ? \"motion-out\" : name === \"in\" || name === \"out\" ? `motion-${name}` : `duration-${name}`;\nconst easeToken = (name: string) => `ease-${name === \"inOut\" ? \"in-out\" : name}`;\nconst REQUEST = {\n times: [\n ...Object.keys(semanticMotion.duration).map(durationToken),\n ...Object.keys(semanticMotion.spring).map((name) => `spring-${name}`),\n ...Object.keys(semanticMotion.stagger).map((name) => `stagger-${name}`),\n \"fade-in\",\n \"fade-out\",\n ],\n easings: [...Object.keys(semanticMotion.ease).map(easeToken), \"ease-spring\", \"ease-spring-bounce\", \"ease-overshoot\"],\n numbers: [\"motion-scale\", \"motion-look\", \"press-scale\"],\n // timing only: the host's own type would make every control resolve differently from the page around it\n typography: false,\n};\n\n/**\n * Resolve each timing at the actual host; omitted host uses the nearest managed root. The first/server snapshot is\n * the pure foundation default. Local CSS values, scope changes, font readiness, OS preference and explicit refresh\n * update the same consumer; no document-wide first-root fallback or persistent global listener.\n */\nexport function useMotionTokens(hostRef?: RefObject): MotionTokens & {\n ready: boolean;\n /** Reduced or none: movement, springs and staggers are instant. */\n reduced: boolean;\n mode: \"full\" | \"reduced\" | \"none\";\n /** Opacity-only arrival and departure (seconds): kept under reduced, instant under none (APPEARANCE A06). */\n fade: { in: number; out: number };\n} {\n const root = useAppearanceRoot();\n const scopeRef = useMemo(() => ({ current: root }), [root]);\n const resolved = useResolvedAppearance(hostRef ?? scopeRef, REQUEST);\n return useMemo(() => {\n if (!resolved.ready)\n return {\n ...motionTokens,\n ready: false,\n reduced: false,\n mode: \"full\" as const,\n fade: { in: motionTokens.duration.in, out: motionTokens.duration.out },\n };\n const reduced = resolved.reducedMotion;\n const speed = (resolved.numbers[\"motion-scale\"] ?? 1) * (resolved.numbers[\"motion-look\"] ?? 1);\n const fade =\n resolved.motionMode === \"none\"\n ? { in: 0.001, out: 0.001 }\n : {\n in: resolved.times[\"fade-in\"] ?? semanticMotion.duration.in * speed,\n out: resolved.times[\"fade-out\"] ?? semanticMotion.duration.out * speed,\n };\n const factor = reduced ? 0.001 / semanticMotion.duration.standard : speed;\n const base = motionAt(factor);\n const duration = Object.fromEntries(\n Object.entries(base.duration).map(([name, fallback]) => [\n name,\n reduced ? 0.001 : (resolved.times[durationToken(name)] ?? fallback),\n ]),\n ) as MotionTokens[\"duration\"];\n const stagger = Object.fromEntries(\n Object.entries(base.stagger).map(([name, fallback]) => [\n name,\n reduced ? 0 : (resolved.times[`stagger-${name}`] ?? fallback),\n ]),\n ) as MotionTokens[\"stagger\"];\n const ease = Object.fromEntries(\n Object.entries(base.ease).map(([name, fallback]) => [\n name,\n motionEase(resolved.easings[easeToken(name)], fallback),\n ]),\n ) as MotionTokens[\"ease\"];\n const spring = { ...base.spring };\n for (const name of Object.keys(semanticMotion.spring) as (keyof typeof semanticMotion.spring)[])\n spring[name] = {\n ...base.spring[name],\n visualDuration: reduced ? 0.001 : (resolved.times[`spring-${name}`] ?? base.spring[name].visualDuration),\n bounce: reduced ? 0 : base.spring[name].bounce,\n };\n return {\n ...base,\n ready: true,\n reduced,\n mode: resolved.motionMode,\n fade,\n duration,\n stagger,\n ease,\n spring,\n pressScale: resolved.numbers[\"press-scale\"] ?? base.pressScale,\n css: {\n spring: resolved.easings[\"ease-spring\"] ?? base.css.spring,\n springBounce: resolved.easings[\"ease-spring-bounce\"] ?? base.css.springBounce,\n overshoot: resolved.easings[\"ease-overshoot\"] ?? base.css.overshoot,\n },\n };\n }, [resolved]);\n}\n"},{"path":"beamline/hooks/use-reduced-motion-safe.ts","type":"registry:file","target":"src/ui/beamline/hooks/use-reduced-motion-safe.ts","content":"\"use client\";\n\nimport { useMediaQuery } from \"./use-media-query\";\nimport { useScopeMotion } from \"../runtime/appearance\";\n\n/** Managed motion policy plus the OS preference, with a stable server snapshot. */\nexport function useReducedMotionSafe() {\n const requested = useScopeMotion();\n const os = useMediaQuery(\"(prefers-reduced-motion: reduce)\");\n return requested !== \"auto\" || os;\n}\n"},{"path":"beamline/lib/contour.ts","type":"registry:file","target":"src/ui/beamline/lib/contour.ts","content":"import { readMotionFactor } from \"./motion-tokens\";\n\n/**\n * Contour: a surface whose outline moves like matter instead of a box that resizes. Beamline's own model (research/\n * morphing-interfaces-2026-10-04): a rounded quadrilateral whose four corners each follow their target on a critically\n * damped spring. The corner facing the way it travels answers fastest and the far one slowest, so it leads and gathers;\n * each edge's midpoint heads for where its edge will be a little ahead of its corners and may only bulge outward (the\n * leading edge rounds out like the front of a drop, the tail stays smooth), and while the shape is longer than its target the long edges\n * pinch toward the centre, so a fast move draws a neck; while it is stretched its corners round toward a capsule, as a moving drop does. No spring overshoots: the elasticity is the parts arriving at\n * different moments, never bounce. At rest the surface is its plain CSS box with no clip and no frames.\n *\n * The look decides the material through four inputs on the element (preset-source.css): --m-morph-spread (how unevenly\n * the corners answer; 0 is rigid travel), --m-morph-front (px the leading edge may round out), --m-morph-waist (how much\n * a stretch pinches) and --m-morph-weight (a multiplier on the response time).\n */\nexport interface ContourBox {\n x: number;\n y: number;\n w: number;\n h: number;\n}\n\nexport interface Contour {\n /** Move the surface to `box` (in its offset parent's coordinates). `instant` places it with no motion. */\n to(box: ContourBox, options?: { instant?: boolean }): void;\n /** Stop and leave the surface at its target. */\n destroy(): void;\n}\n\ntype Point = [number, number];\ntype Corner = \"tl\" | \"tr\" | \"br\" | \"bl\";\ntype Edge = \"t\" | \"r\" | \"b\" | \"l\";\nconst CORNERS: Corner[] = [\"tl\", \"tr\", \"br\", \"bl\"];\nconst EDGES: Edge[] = [\"t\", \"r\", \"b\", \"l\"];\n/** Outward direction of each corner, for deciding which one leads. */\nconst OUT: Record = { tl: [-1, -1], tr: [1, -1], br: [1, 1], bl: [-1, 1] };\n/** Outward direction of each edge. */\nconst NORMAL: Record = { t: [0, -1], r: [1, 0], b: [0, 1], l: [-1, 0] };\n/** Settles at the motion-token morph spring at the foundation default. */\nconst BASE_RESPONSE = 0.26;\n\ninterface Mechanics {\n spread: number;\n front: number;\n waist: number;\n weight: number;\n /** The colour of the edge drawn along a non-rectangular outline (the look's hairline, which a clip would cut off). */\n rim: string;\n rimWidth: number;\n}\n\n/** One step of a critically damped spring with response time `t` (s), in closed form so a long frame cannot explode. */\nfunction step(x: number, v: number, target: number, t: number, dt: number): [number, number] {\n const w = (2 * Math.PI) / (t * 1.2);\n const d = x - target;\n const e = Math.exp(-w * dt);\n return [target + (d + (v + w * d) * dt) * e, (v - w * (v + w * d) * dt) * e];\n}\n\nconst cornersOf = (b: ContourBox): Record => ({\n tl: [b.x, b.y],\n tr: [b.x + b.w, b.y],\n br: [b.x + b.w, b.y + b.h],\n bl: [b.x, b.y + b.h],\n});\nconst midsOf = (c: Record): Record => ({\n t: [(c.tl[0] + c.tr[0]) / 2, (c.tl[1] + c.tr[1]) / 2],\n r: [(c.tr[0] + c.br[0]) / 2, (c.tr[1] + c.br[1]) / 2],\n b: [(c.br[0] + c.bl[0]) / 2, (c.br[1] + c.bl[1]) / 2],\n l: [(c.bl[0] + c.tl[0]) / 2, (c.bl[1] + c.tl[1]) / 2],\n});\nconst zero = (keys: K[]) => Object.fromEntries(keys.map((k) => [k, [0, 0]])) as Record;\nconst num = (style: CSSStyleDeclaration, name: string, fallback: number) => {\n const value = Number.parseFloat(style.getPropertyValue(name));\n return Number.isFinite(value) ? value : fallback;\n};\n\n/** All moving contours share one frame loop, which stops when the last one settles. */\nconst moving = new Set<(dt: number) => boolean>();\nlet frame = 0;\nlet last = 0;\nfunction tick(now: number) {\n const dt = Math.min(0.032, Math.max(0.001, (now - last) / 1000));\n last = now;\n for (const advance of moving) if (!advance(dt)) moving.delete(advance);\n frame = moving.size ? requestAnimationFrame(tick) : 0;\n}\nfunction run(advance: (dt: number) => boolean) {\n moving.add(advance);\n if (!frame) {\n last = performance.now();\n frame = requestAnimationFrame(tick);\n }\n}\n\n/** One contour per element, so a remount (or React's development double mount) keeps its place and keeps moving. */\nconst contours = new WeakMap();\nexport function createContour(el: HTMLElement): Contour {\n const existing = contours.get(el);\n if (existing) return existing;\n let target: ContourBox | null = null;\n let pos: Record | null = null;\n let vel = zero(CORNERS);\n let mid: Record = { t: [0, 0], r: [0, 0], b: [0, 0], l: [0, 0] };\n let midVel = zero(EDGES);\n let mech: Mechanics = { spread: 0.35, front: 5, waist: 0.16, weight: 1, rim: \"none\", rimWidth: 1 };\n let rimPath: SVGPathElement | null = null;\n const rim = (d: string | null, w = 0, h = 0) => {\n if (!d || mech.rim === \"none\") {\n if (rimPath) (rimPath.ownerSVGElement as SVGSVGElement).style.display = \"none\";\n return;\n }\n if (!rimPath) {\n const ns = \"http://www.w3.org/2000/svg\";\n const svg = el.ownerDocument.createElementNS(ns, \"svg\");\n svg.setAttribute(\"aria-hidden\", \"true\");\n svg.setAttribute(\"data-contour-rim\", \"\");\n svg.style.cssText = \"position:absolute;left:0;top:0;z-index:2;overflow:visible;pointer-events:none\";\n rimPath = el.ownerDocument.createElementNS(ns, \"path\");\n rimPath.setAttribute(\"fill\", \"none\");\n svg.appendChild(rimPath);\n el.appendChild(svg);\n }\n const svg = rimPath.ownerSVGElement as SVGSVGElement;\n svg.style.display = \"\";\n svg.setAttribute(\"width\", String(w));\n svg.setAttribute(\"height\", String(h));\n rimPath.setAttribute(\"d\", d);\n // the clip keeps the inner half of the stroke: an edge of rimWidth inside the outline\n rimPath.setAttribute(\"stroke-width\", String(mech.rimWidth * 2));\n rimPath.style.stroke = mech.rim;\n };\n let response = BASE_RESPONSE;\n let radius = 0;\n let running = false;\n\n const rest = () => {\n if (!target) return;\n el.style.transform = `translate(${target.x}px, ${target.y}px)`;\n el.style.width = `${target.w}px`;\n el.style.height = `${target.h}px`;\n el.style.clipPath = \"\";\n rim(null);\n delete el.dataset.morphing;\n };\n\n const draw = () => {\n if (!pos || !target) return;\n const c = pos;\n const w = (c.tr[0] - c.tl[0] + c.br[0] - c.bl[0]) / 2;\n const h = (c.bl[1] - c.tl[1] + c.br[1] - c.tr[1]) / 2;\n // the long edges pinch while the shape is longer than its target (area kept, roughly)\n const pinchY = Math.min(h * mech.waist * 0.5, 4, h * Math.max(0, w / target.w - 1) * mech.waist);\n const pinchX = Math.min(w * mech.waist * 0.5, 4, w * Math.max(0, h / target.h - 1) * mech.waist);\n const edges: Record = {\n t: [mid.t[0], mid.t[1] + pinchY],\n b: [mid.b[0], mid.b[1] - pinchY],\n l: [mid.l[0] + pinchX, mid.l[1]],\n r: [mid.r[0] - pinchX, mid.r[1]],\n };\n // still a rectangle (a rigid look, or a straight move): move the box itself and keep every bit of the look's paint\n const flat = (a: number, b: number) => Math.abs(a - b) < 0.35;\n const corners = midsOf(c);\n if (\n flat(c.tl[1], c.tr[1]) &&\n flat(c.bl[1], c.br[1]) &&\n flat(c.tl[0], c.bl[0]) &&\n flat(c.tr[0], c.br[0]) &&\n EDGES.every((k) => flat(edges[k][0], corners[k][0]) && flat(edges[k][1], corners[k][1]))\n ) {\n el.style.transform = `translate(${c.tl[0]}px, ${c.tl[1]}px)`;\n el.style.width = `${c.tr[0] - c.tl[0]}px`;\n el.style.height = `${c.bl[1] - c.tl[1]}px`;\n el.style.clipPath = \"\";\n rim(null);\n return;\n }\n const all = [...CORNERS.map((k) => c[k]), ...EDGES.map((k) => edges[k])];\n const minX = Math.floor(Math.min(...all.map((p) => p[0]))) - 1;\n const minY = Math.floor(Math.min(...all.map((p) => p[1]))) - 1;\n const maxX = Math.ceil(Math.max(...all.map((p) => p[0]))) + 1;\n const maxY = Math.ceil(Math.max(...all.map((p) => p[1]))) + 1;\n const local = (p: Point): Point => [p[0] - minX, p[1] - minY];\n const C = CORNERS.map((k) => local(c[k]));\n const E = ([\"t\", \"r\", \"b\", \"l\"] as Edge[]).map((k) => local(edges[k]));\n const len = (a: Point, b: Point) => Math.hypot(b[0] - a[0], b[1] - a[1]) || 1;\n const toward = (a: Point, b: Point, d: number): Point => {\n const l = len(a, b);\n return [a[0] + ((b[0] - a[0]) / l) * d, a[1] + ((b[1] - a[1]) / l) * d];\n };\n // each corner backs off its radius along both of its real edges and turns through the corner itself, so a sheared\n // shape never folds over; each edge bows through its midpoint\n // a moving drop is round: corners grow toward a capsule while the shape is stretched or far from home\n const away = Math.max(w / target.w - 1, h / target.h - 1, 0);\n const round = mech.front > 0 ? Math.min(1, away * 2.5) : 0;\n const r = radius + (Math.min(w, h) / 2 - radius) * Math.max(0, round);\n const rr = C.map((p, i) => Math.min(r, len(p, C[(i + 1) % 4]) / 2.2, len(p, C[(i + 3) % 4]) / 2.2));\n const into = C.map((p, i) => toward(p, C[(i + 3) % 4], rr[i]));\n const out = C.map((p, i) => toward(p, C[(i + 1) % 4], rr[i]));\n const through = (a: Point, m: Point, b: Point): Point => [\n 2 * m[0] - (a[0] + b[0]) / 2,\n 2 * m[1] - (a[1] + b[1]) / 2,\n ];\n const f = (p: Point) => `${p[0].toFixed(1)} ${p[1].toFixed(1)}`;\n let d = `M${f(out[0])}`;\n for (let i = 0; i < 4; i++) {\n const j = (i + 1) % 4;\n // an edge the rounded corners have nearly used up can only bow a little, or its middle would point\n const a = out[i];\n const b = into[j];\n const chord: Point = [(a[0] + b[0]) / 2, (a[1] + b[1]) / 2];\n const bow: Point = [E[i][0] - chord[0], E[i][1] - chord[1]];\n const most = len(a, b) * 0.18;\n const bowLen = Math.hypot(bow[0], bow[1]);\n const m: Point =\n bowLen > most ? [chord[0] + (bow[0] / bowLen) * most, chord[1] + (bow[1] / bowLen) * most] : E[i];\n d += ` Q${f(through(a, m, b))} ${f(b)} Q${f(C[j])} ${f(out[j])}`;\n }\n el.style.transform = `translate(${minX}px, ${minY}px)`;\n el.style.width = `${maxX - minX}px`;\n el.style.height = `${maxY - minY}px`;\n el.style.clipPath = `path(\"${d}Z\")`;\n rim(`${d}Z`, maxX - minX, maxY - minY);\n };\n\n const advance = (dt: number) => {\n if (!pos || !target || !el.isConnected) return (running = false);\n const goal = cornersOf(target);\n let busy = false;\n for (const k of CORNERS) {\n const p = pos[k];\n const v = vel[k];\n const g = goal[k];\n const dx = g[0] - p[0];\n const dy = g[1] - p[1];\n const dist = Math.hypot(dx, dy);\n // -1 … 1: how squarely this corner faces the way it is going\n const along = dist > 0.5 ? (OUT[k][0] * dx + OUT[k][1] * dy) / (dist * Math.SQRT2) : 0;\n const t = response * (1 + mech.spread * 0.4 - mech.spread * along);\n for (const a of [0, 1] as const) {\n [p[a], v[a]] = step(p[a], v[a], g[a], t, dt);\n if (Math.abs(p[a] - g[a]) > 0.2 || Math.abs(v[a]) > 4) busy = true;\n }\n }\n const now = midsOf(pos);\n const aim = midsOf(goal);\n for (const k of EDGES) {\n for (const a of [0, 1] as const)\n [mid[k][a], midVel[k][a]] = step(mid[k][a], midVel[k][a], aim[k][a], response * 0.75, dt);\n // the lead is a few pixels at most, and never more than a fraction of the edge or of the shape's depth\n const across = k === \"t\" || k === \"b\" ? target.h : target.w;\n const edge =\n k === \"t\" ? [pos.tl, pos.tr] : k === \"b\" ? [pos.br, pos.bl] : k === \"l\" ? [pos.bl, pos.tl] : [pos.tr, pos.br];\n const limit = Math.min(\n mech.front,\n across * 0.3,\n Math.hypot(edge[1][0] - edge[0][0], edge[1][1] - edge[0][1]) * 0.15,\n );\n // edges only ever bulge outward: the front rounds out, the tail stays smooth instead of curling in\n let ox = mid[k][0] - now[k][0];\n let oy = mid[k][1] - now[k][1];\n const [nx, ny] = NORMAL[k];\n const inward = ox * nx + oy * ny;\n if (inward < 0) {\n ox -= inward * nx;\n oy -= inward * ny;\n mid[k][0] = now[k][0] + ox;\n mid[k][1] = now[k][1] + oy;\n }\n const off = Math.hypot(ox, oy);\n if (off > limit) {\n mid[k][0] = now[k][0] + (ox / off) * limit;\n mid[k][1] = now[k][1] + (oy / off) * limit;\n }\n if (Math.abs(mid[k][0] - aim[k][0]) > 0.2 || Math.abs(mid[k][1] - aim[k][1]) > 0.2) busy = true;\n }\n if (!busy) {\n pos = goal;\n vel = zero(CORNERS);\n mid = midsOf(goal);\n midVel = zero(EDGES);\n rest();\n return (running = false);\n }\n draw();\n return true;\n };\n\n const contour: Contour = {\n to(box, options) {\n const same = target && target.x === box.x && target.y === box.y && target.w === box.w && target.h === box.h;\n if (same && !options?.instant) return;\n target = { ...box };\n const style = getComputedStyle(el);\n const r = style.borderTopLeftRadius;\n radius = r.endsWith(\"%\") ? (Number.parseFloat(r) / 100) * Math.min(box.w, box.h) : Number.parseFloat(r) || 0;\n mech = {\n spread: num(style, \"--m-morph-spread\", 0.35),\n front: num(style, \"--m-morph-front\", 6),\n waist: num(style, \"--m-morph-waist\", 0.18),\n weight: num(style, \"--m-morph-weight\", 1),\n rim: style.getPropertyValue(\"--m-morph-rim\").trim() || \"none\",\n rimWidth: num(style, \"--m-morph-rim-width\", 1),\n };\n const factor = readMotionFactor(el);\n response = BASE_RESPONSE * mech.weight * factor;\n // first placement, reduced motion, or a hidden surface: be there, with nothing to watch\n if (!pos || options?.instant || factor < 0.05 || !el.getClientRects().length) {\n pos = cornersOf(target);\n vel = zero(CORNERS);\n mid = midsOf(pos);\n midVel = zero(EDGES);\n moving.delete(advance);\n running = false;\n rest();\n return;\n }\n el.dataset.morphing = \"\";\n if (!running) {\n running = true;\n run(advance);\n }\n },\n destroy() {\n moving.delete(advance);\n running = false;\n if (target) rest();\n },\n };\n contours.set(el, contour);\n return contour;\n}\n"},{"path":"beamline/lib/utils.ts","type":"registry:file","target":"src/ui/beamline/lib/utils.ts","content":"import { clsx, type ClassValue } from \"clsx\";\nimport { extendTailwindMerge } from \"tailwind-merge\";\n\n/* The type roles (utilities.css) and the 2xs step are sizes, not text colours: without this, tailwind-merge reads\n `text-overline` as a colour and drops it next to `text-ink-3`. A role and a size step still replace each other.\n Likewise `font-title` is the look's title weight, not a family: read as a family it dropped `font-display` beside it,\n and every merged page title lost the look's display face. */\nconst twMerge = extendTailwindMerge({\n extend: {\n classGroups: {\n \"font-weight\": [{ font: [\"title\"] }],\n \"font-family\": [{ font: [\"display\", \"numeric\", \"figure\"] }],\n \"font-size\": [\n {\n text: [\n \"2xs\",\n \"display\",\n \"title\",\n \"heading\",\n \"subheading\",\n \"body\",\n \"body-sm\",\n \"reading\",\n \"label\",\n \"caption\",\n \"overline\",\n \"numeric\",\n \"code\",\n ],\n },\n ],\n },\n },\n});\n\n/** Merge class names, letting later Tailwind utilities win over earlier ones. */\nexport function cn(...inputs: ClassValue[]) {\n return twMerge(clsx(inputs));\n}\n\n/** A small seeded random generator (LCG): the same seed gives the same sequence, for stable sample data and jitter. */\nexport function rng(seed = 1) {\n let s = seed >>> 0 || 1;\n return () => (s = (s * 1664525 + 1013904223) >>> 0) / 2 ** 32;\n}\n\nexport const clamp = (value: number, min: number, max: number) => Math.min(max, Math.max(min, value));\n"}],"docs":"Tree view is in src/ui/beamline/components/tree-view/tree-view.tsx. The source is in src/ui/beamline (ui/beamline in a project without src/). After Tailwind, import its styles/beamline.css once, then styles/look-prism.css in your app stylesheet (use relative paths). Keep the shared base before all chosen looks. Wrap your app in with UIRoot from its runtime/appearance and prism from its looks/prism. shadcn replaces files when asked; use the Beamline managed-source CLI from the start for three-way upgrades that preserve edits.","meta":{"free":true,"version":"0.2.0-rc.42","library":"https://beamline.io/components/tree-view"}}