audit (EXPERIMENTAL)

auditAccessibility(agent.describe({ styles: true })) turns the affordance map into findings. It is the lint the map made obvious: every element with handlers should have a name, a role, and enough contrast and size to use — and because the map is the framework's own record of its wiring, a finding here is a real defect, not a scraper's guess.

import { enableAgentInterface, auditAccessibility } from 'tosijs'

const agent = enableAgentInterface()
const report = auditAccessibility(agent.describe({ styles: true }))
report.failed   // 0 when clean
report.findings // [{ rule, severity, message, record, index }]

Pure over the description — no DOM, so it runs on a map that arrived over a wire, in a test, or in CI. Pass styles: true to describe() or the contrast rule has nothing to measure and skips itself (it says so).

The rules

rule	what it catches	why
`anonymous-affordance`	a wired element with no accessible name, text, or value	a screen reader announces "button"; an agent sees `<div>`
`unnameable-action`	a handler that is an anonymous function (`ƒ`)	nothing can invoke or describe it but a click
`missing-role`	a non-semantic tag (div/span) wired to act	assistive tech has no idea it is a control
`contrast`	text/background below the WCAG AA ratio	measured with tosijs's own `Color`; needs `styles: true`
`target-size`	interactive element below 24×24 (WCAG 2.5.8)	too small to hit reliably; toggles exempt
`label-hidden-by-placeholder`	a control whose only name is its placeholder	the name vanishes the moment the user types

Findings carry the record and its index, so a caller can jump straight to the element — or hand the pair to schematicSVG's flags to draw them.

Known divergence (tosijs-floorplan#4). target-size and "is this interactive" are currently implemented twice — here, and in the vendored renderer that draws the same map — and the two have drifted: this module counts href as interactive and exempts a link named by aria-label; the renderer does neither. So an icon-only <a href onClick aria-label="Buy"> at 20×20 audits clean while the drawing flags it, and a nameless 16×16 <a href> does the reverse. Reconciliation has to happen upstream (src/schematic.ts is machine-vendored) — see tosijs-floorplan#4. Until it lands, trust this module's verdict for target-size: it has the accessible name, which the renderer does not.

EXPERIMENTAL. Ships with the agent surface; rules and shapes may change.