Provenance lens
A React component in Beamline's Data & tables category.
Hold Alt (or press Lens) over any number on the page and see what makes it: hairline threads draw from the number to the rows, cards and documents on screen that make it, the formula sits beside it in words, sources out of view gather as a counted stack at their panel's edge, unknown and locked sources say so, and a click goes one level deeper to the sources' own sources with how fresh each is, while a trail across the top reads the chain. Every number is also a button that lists its sources.
Use it for
- A page of numbers people have to defend or don't trust: an owner's dashboard, a stock count, a team's cost, an audit view.
- The host already renders the rows and documents; it adds data-ref to them and a graph of what makes each number.
Not for
- One total explained step by step with levers → explainable-total.
- A record's history over time → a timeline or the replay bar.
Anatomy
- region: the bar (the Lens button, the hint with the Alt key, or the trail while showing), the host's page, the lens's layer over it
- value (a button) inside the host's page: the number as the host writes it
- layer while showing: threads (hairlines from the number to each visible source, role marks + and − where they land), the formula chip beside the number (formula in words, mismatch, estimate, freshness, unknown and locked chips, the deeper hint), stacks at a panel's bottom edge for sources out of view, freshness tags on deeper sources
- list (Enter on a number): the number, the formula, each part with its amount, its sources on the page with Show, the count not on this page, unknown, no access, freshness
States
- rest
- lens on (held or kept)
- showing a number (level 1)
- deeper (level 2 and on)
- unknown source
- no access
- stale source
- estimate
- mismatch
- list open
Keyboard
- Tab reaches each number; Enter (or Alt+Enter) opens its list of sources; Escape closes it and returns to the number
- In the list, Show scrolls to that source on the page and marks it
- The Lens button keeps the lens on: Tab to a number to draw its threads, Enter on it to go one level deeper; Escape (outside a source list) turns the lens off; Alt does nothing while typing in a field
- Holding Alt while focus is in the region turns the lens on while held
- The formula and the chain are read out as a polite status; the threads are decoration
Motion
Threads draw in from the number on the line stagger, chips and stacks fade in; everything happens only while the lens is on and nothing runs at rest. Reduced motion places them.
Props
| Prop | Type | Default | Description |
|---|---|---|---|
graph (required) | ProvenanceGraph | — | Every number and source the lens can explain, by ref. |
children (required) | ReactNode | — | The page or dashboard: values (`ProvenanceValue`) and sources (`data-ref`) anywhere inside. |
currency | string | — | ISO code for the lens's own amounts (its list of parts); the page's numbers stay as the host wrote them. |
format | ((amount: number) => string) | — | The lens's own amounts in the host's format; it wins over `currency` and never touches the children. |
now | Date | — | "Now" for freshness; default the time of drawing. |
active | boolean | — | The lens kept on (the Lens button); Alt held turns it on while held. |
defaultActive | boolean | — | |
onActiveChange | ((active: boolean) => void) | — | |
className | string | — | Classes on the documented visual root; no override by default. |
classNames | Partial<Record<"root" | "list" | "value" | "bar" | "stack" | "chip" | "lensButton" | "t… | — | Classes for the named visual parts; no overrides by default. |
style | CSSProperties | — | Inline styles on the documented visual root; no overrides by default. |
ref | Ref<HTMLDivElement> | — | Receives the documented native target or imperative handle; omitted by default. |
ProvenanceValue.of (required) | string | — | On ProvenanceValue: Its ref in the lens's graph (and its own `data-ref`, so other numbers can point at it). |
defaultTarget | string | — | The number the lens opens on, by ref (with the lens on): its threads drawn at once, as if pointed at. |
Built from
Dependencies
lucide-react
Import
import { ProvenanceLens, ProvenanceValue } from "@beamline/provenance-lens";Get it
Provenance lens is part of Beamline UI. Install the parts you need in your React app as compiled packages or editable source. Get Beamline · Connect your agent
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