{
  "$schema": "https://www.digitaltableteur.com/schemas/contract-spec/1.0/contract.schema.json",
  "specVersion": "1.0",
  "name": "VirtualList",
  "status": "beta",
  "description": "Fixed-height windowed list with overscan and explicit assistive-technology position metadata.",
  "package": {
    "name": "@digitaltableteur/react",
    "import": "import { VirtualList } from \"@digitaltableteur/react\";"
  },
  "props": {
    "items": {
      "type": "Item[]",
      "optional": false,
      "description": "Complete item collection."
    },
    "itemHeight": {
      "type": "number",
      "optional": false,
      "description": "Fixed item height in pixels."
    },
    "height": {
      "type": "number",
      "optional": false,
      "description": "Visible viewport height in pixels."
    },
    "getItemKey": {
      "type": "(item: Item, index: number) => React.Key",
      "optional": false,
      "description": "Stable item key."
    },
    "getItemProps": {
      "type": "(item: Item, index: number) => VirtualListItemContent",
      "optional": false,
      "description": "Maps an item to its VirtualListItem chrome (label via `children`, plus\noptional `icon`, `meta`, `trailingIcon`, `selected`, `tone`). VirtualList\ninjects the position (`posInSet`/`setSize`) and windowing style."
    },
    "aria-label": {
      "type": "string",
      "optional": false,
      "description": "Accessible list name."
    },
    "overscan": {
      "type": "number",
      "optional": true,
      "description": "Extra rows rendered before and after the viewport."
    },
    "initialScrollOffset": {
      "type": "number",
      "optional": true,
      "description": "Initial scroll offset in pixels."
    },
    "onRangeChange": {
      "type": "(range: VirtualListRange) => void",
      "optional": true,
      "description": "Receives the rendered index range."
    },
    "className": {
      "type": "string",
      "optional": true
    }
  },
  "accessibility": {
    "criteria": [
      {
        "id": "axe-no-violations",
        "statement": "Required stories produce no axe violations at the configured severity.",
        "verification": "automated",
        "wcag": [
          "2.5.8"
        ],
        "check": "npm run test:stories:matrix:ci",
        "evidence": [
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            "artifact": "../../../nextjs-app/shared/components/VirtualList/__a11y-evidence__/data-display-virtuallist-default.dark.json",
            "sourceCommit": "ffbeeeec52e120b19494e2ac7b4dbab8ff13ceb3",
            "capturedAt": "2026-11-07T09:25:29.008Z",
            "passed": true,
            "runner": "local-audit-fixes"
          },
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            "sourceCommit": "ffbeeeec52e120b19494e2ac7b4dbab8ff13ceb3",
            "capturedAt": "2026-11-07T09:12:23.669Z",
            "passed": true,
            "runner": "local-audit-fixes"
          },
          {
            "artifact": "../../../nextjs-app/shared/components/VirtualList/__a11y-evidence__/data-display-virtuallist-default.light.json",
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            "capturedAt": "2026-11-07T09:18:54.312Z",
            "passed": true,
            "runner": "local-audit-fixes"
          },
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            "runner": "local-audit-fixes"
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            "passed": true,
            "runner": "local-audit-fixes"
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            "artifact": "../../../nextjs-app/shared/components/VirtualList/__a11y-evidence__/data-display-virtuallist-forced-colors.dark.json",
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            "capturedAt": "2026-11-07T09:25:29.890Z",
            "passed": true,
            "runner": "local-audit-fixes"
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            "capturedAt": "2026-11-07T09:12:24.570Z",
            "passed": true,
            "runner": "local-audit-fixes"
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            "capturedAt": "2026-11-07T09:18:55.226Z",
            "passed": true,
            "runner": "local-audit-fixes"
          },
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            "artifact": "../../../nextjs-app/shared/components/VirtualList/__a11y-evidence__/data-display-virtuallist-playground.dark.json",
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            "capturedAt": "2026-11-07T09:25:29.293Z",
            "passed": true,
            "runner": "local-audit-fixes"
          },
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            "artifact": "../../../nextjs-app/shared/components/VirtualList/__a11y-evidence__/data-display-virtuallist-playground.json",
            "sourceCommit": "ffbeeeec52e120b19494e2ac7b4dbab8ff13ceb3",
            "capturedAt": "2026-11-07T09:12:23.954Z",
            "passed": true,
            "runner": "local-audit-fixes"
          },
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            "artifact": "../../../nextjs-app/shared/components/VirtualList/__a11y-evidence__/data-display-virtuallist-playground.light.json",
            "sourceCommit": "ffbeeeec52e120b19494e2ac7b4dbab8ff13ceb3",
            "capturedAt": "2026-11-07T09:18:54.599Z",
            "passed": true,
            "runner": "local-audit-fixes"
          }
        ]
      },
      {
        "id": "accessibility-tree",
        "statement": "The accessibility tree (role, name, state) matches the committed snapshot for every required story.",
        "verification": "automated",
        "wcag": [
          "1.3.1",
          "4.1.2"
        ],
        "check": "npm run test:stories:matrix:ci",
        "evidence": [
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            "artifact": "../../../nextjs-app/shared/components/VirtualList/__a11y-evidence__/data-display-virtuallist-default.dark.json",
            "sourceCommit": "ffbeeeec52e120b19494e2ac7b4dbab8ff13ceb3",
            "capturedAt": "2026-11-07T09:25:29.008Z",
            "passed": true,
            "runner": "local-audit-fixes"
          },
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            "artifact": "../../../nextjs-app/shared/components/VirtualList/__a11y-evidence__/data-display-virtuallist-default.forced-colors.json",
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            "capturedAt": "2026-11-07T09:32:05.790Z",
            "passed": true,
            "runner": "local-audit-fixes"
          },
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            "artifact": "../../../nextjs-app/shared/components/VirtualList/__a11y-evidence__/data-display-virtuallist-default.json",
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            "capturedAt": "2026-11-07T09:12:23.669Z",
            "passed": true,
            "runner": "local-audit-fixes"
          },
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            "runner": "local-audit-fixes"
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            "runner": "local-audit-fixes"
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            "artifact": "../../../nextjs-app/shared/components/VirtualList/__a11y-evidence__/data-display-virtuallist-example.forced-colors.json",
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            "capturedAt": "2026-11-07T09:32:06.334Z",
            "passed": true,
            "runner": "local-audit-fixes"
          },
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            "artifact": "../../../nextjs-app/shared/components/VirtualList/__a11y-evidence__/data-display-virtuallist-example.json",
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            "capturedAt": "2026-11-07T09:12:24.270Z",
            "passed": true,
            "runner": "local-audit-fixes"
          },
          {
            "artifact": "../../../nextjs-app/shared/components/VirtualList/__a11y-evidence__/data-display-virtuallist-example.light.json",
            "sourceCommit": "ffbeeeec52e120b19494e2ac7b4dbab8ff13ceb3",
            "capturedAt": "2026-11-07T09:18:54.930Z",
            "passed": true,
            "runner": "local-audit-fixes"
          },
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            "artifact": "../../../nextjs-app/shared/components/VirtualList/__a11y-evidence__/data-display-virtuallist-forced-colors.dark.json",
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            "capturedAt": "2026-11-07T09:25:29.890Z",
            "passed": true,
            "runner": "local-audit-fixes"
          },
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            "artifact": "../../../nextjs-app/shared/components/VirtualList/__a11y-evidence__/data-display-virtuallist-forced-colors.forced-colors.json",
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            "capturedAt": "2026-11-07T09:32:06.581Z",
            "passed": true,
            "runner": "local-audit-fixes"
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            "capturedAt": "2026-11-07T09:12:24.570Z",
            "passed": true,
            "runner": "local-audit-fixes"
          },
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            "artifact": "../../../nextjs-app/shared/components/VirtualList/__a11y-evidence__/data-display-virtuallist-forced-colors.light.json",
            "sourceCommit": "ffbeeeec52e120b19494e2ac7b4dbab8ff13ceb3",
            "capturedAt": "2026-11-07T09:18:55.226Z",
            "passed": true,
            "runner": "local-audit-fixes"
          },
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            "capturedAt": "2026-11-07T09:25:29.293Z",
            "passed": true,
            "runner": "local-audit-fixes"
          },
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            "artifact": "../../../nextjs-app/shared/components/VirtualList/__a11y-evidence__/data-display-virtuallist-playground.forced-colors.json",
            "sourceCommit": "ffbeeeec52e120b19494e2ac7b4dbab8ff13ceb3",
            "capturedAt": "2026-11-07T09:32:06.054Z",
            "passed": true,
            "runner": "local-audit-fixes"
          },
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            "artifact": "../../../nextjs-app/shared/components/VirtualList/__a11y-evidence__/data-display-virtuallist-playground.json",
            "sourceCommit": "ffbeeeec52e120b19494e2ac7b4dbab8ff13ceb3",
            "capturedAt": "2026-11-07T09:12:23.954Z",
            "passed": true,
            "runner": "local-audit-fixes"
          },
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            "artifact": "../../../nextjs-app/shared/components/VirtualList/__a11y-evidence__/data-display-virtuallist-playground.light.json",
            "sourceCommit": "ffbeeeec52e120b19494e2ac7b4dbab8ff13ceb3",
            "capturedAt": "2026-11-07T09:18:54.599Z",
            "passed": true,
            "runner": "local-audit-fixes"
          }
        ]
      },
      {
        "id": "forced-colors-real-browser",
        "statement": "The component remains legible and operable under a real browser forced-colors: active pass.",
        "verification": "automated",
        "check": "npm run test:stories:hc",
        "evidence": [
          {
            "artifact": "../../../nextjs-app/shared/components/VirtualList/__a11y-evidence__/data-display-virtuallist-default.forced-colors.json",
            "sourceCommit": "ffbeeeec52e120b19494e2ac7b4dbab8ff13ceb3",
            "capturedAt": "2026-11-07T09:32:05.790Z",
            "passed": true,
            "runner": "local-audit-fixes"
          },
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            "sourceCommit": "ffbeeeec52e120b19494e2ac7b4dbab8ff13ceb3",
            "capturedAt": "2026-11-07T09:32:06.334Z",
            "passed": true,
            "runner": "local-audit-fixes"
          },
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            "artifact": "../../../nextjs-app/shared/components/VirtualList/__a11y-evidence__/data-display-virtuallist-forced-colors.forced-colors.json",
            "sourceCommit": "ffbeeeec52e120b19494e2ac7b4dbab8ff13ceb3",
            "capturedAt": "2026-11-07T09:32:06.581Z",
            "passed": true,
            "runner": "local-audit-fixes"
          },
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            "artifact": "../../../nextjs-app/shared/components/VirtualList/__a11y-evidence__/data-display-virtuallist-playground.forced-colors.json",
            "sourceCommit": "ffbeeeec52e120b19494e2ac7b4dbab8ff13ceb3",
            "capturedAt": "2026-11-07T09:32:06.054Z",
            "passed": true,
            "runner": "local-audit-fixes"
          }
        ]
      },
      {
        "id": "keyboard-contract",
        "statement": "Every documented keyboard interaction works as specified.",
        "verification": "unverified",
        "wcag": [
          "2.1.1",
          "2.1.2"
        ],
        "note": "No exportable evidence record for this check; re-run the check to capture one."
      },
      {
        "id": "aria-requirements",
        "statement": "Documented ARIA roles, states, and properties are present on the rendered output.",
        "verification": "unverified",
        "wcag": [
          "4.1.2"
        ],
        "note": "No exportable evidence record for this check; re-run the check to capture one."
      },
      {
        "id": "human-a11y-review",
        "statement": "A human completed an end-to-end accessibility review of this component.",
        "verification": "manual",
        "note": "2026-07-26 — list semantics, item position metadata, rendered range behavior, and axe result reviewed in unit tests. 2026-08-04 — Phase 1 pass: light/dark/forced-colors verified in a real browser; windowing asserted at 10,000 rows (DOM capped at visible+overscan, true posinset/setsize); scroll-window focusability play; scroll-stability latency measured; AT-tree and real-browser forced-colors evidence captured.",
        "reviewedAt": "2026-07-26"
      }
    ]
  },
  "source": [
    "../../../nextjs-app/shared/components/VirtualList/VirtualList.module.css",
    "../../../nextjs-app/shared/components/VirtualList/VirtualList.tsx"
  ]
}