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hyperframes/packages/core/src/figma/assetSnippet.ts
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Vance Ingalls 397c3ba7a8 feat(core): figma module foundations — types, parseFigmaRef, freeze, manifest, asset snippet (#1868)
## What

Foundations of the `@hyperframes/core/figma` module — the pure, transport-agnostic layer every later phase builds on:

- **`types.ts`** — `FigmaRef`, `FigmaProvenance`, `FigmaManifestRecord`, and the Motion model (`MotionDoc`/`MotionTrack`/`TimelineSpec`/`GsapTween`) shared across the stack.
- **`parseFigmaRef`** — normalizes any user input (full `/design|/file|/proto` URLs with `?node-id=1-2`, `fileKey:nodeId` shorthand, bare `fileKey`) into `{ fileKey, nodeId }`, including the URL-dash → API-colon node-id conversion.
- **`freeze.ts`** — `freezeBytes`/`freezeUrl`/`freezeLocalFile` with a 256 MB cap; every Figma asset is frozen to a local file before it can reach a composition (determinism: no render-time network).
- **`manifest.ts`** — the `.media/manifest.jsonl` ledger (same layout `media-use` writes, so a project has one shared media inventory without either skill depending on the other): append/read/find-by-node/next-id, with a pure type-guard (`isFigmaManifestRecord`) instead of `as`-casts.
- **`assetSnippet.ts`** — manifest record → composition `<img>` snippet with escaped attrs + `data-figma-id`.
- **publishConfig fix** — `./figma` added to `packages/core` `publishConfig.exports` (the packed-manifest CI gate requires every source export to have a dist mapping).

## Why

Design spec: `docs/superpowers/specs/2026-06-30-figma-asset-integration-design.md`. These functions are deliberately transport-agnostic — when the project reversed from MCP-first to a REST/MCP split (spec §2), nothing in this layer changed. That was the point.

## Tests

Unit tests per module (URL variants, freeze cap edges, manifest round-trip/malformed-line tolerance, snippet escaping). All colocated `*.test.ts`, vitest, no network.

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Stack (1/6): this PR → #1869#1870#1871#1872#1873

🤖 Generated with [Claude Code](https://claude.com/claude-code)
2026-07-03 14:12:24 -07:00

21 lines
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TypeScript

import type { AssetSnippet, FigmaManifestRecord } from "./types";
function escapeAttr(value: string): string {
return value
.replace(/&/g, "&amp;")
.replace(/</g, "&lt;")
.replace(/>/g, "&gt;")
.replace(/"/g, "&quot;");
}
export function buildAssetSnippet(record: FigmaManifestRecord): AssetSnippet {
// Every interpolated attribute is escaped — path and nodeId are
// system-generated today, but defense-in-depth is free here.
const alt = escapeAttr(record.description ?? record.id);
const src = escapeAttr(record.path);
const w = record.width !== undefined ? ` width="${record.width}"` : "";
const h = record.height !== undefined ? ` height="${record.height}"` : "";
const html = `<img src="${src}" alt="${alt}"${w}${h} data-figma-id="${escapeAttr(record.provenance.nodeId)}" />`;
return { path: record.path, html };
}