Function parseRenderOverrides

packages/producer/src/server.ts:164–176

* Parse the lenient form of the variable + resolution overrides used by * `parseRenderOptions`. Invalid shapes coerce to `undefined` here; * `validateRenderOverrides` separately rejects explicitly-supplied bad values * with a 400 so they aren't silently ignored.

(body: Record<string, unknown>)

 * with a 400 so they aren't silently ignored.
 */
function parseRenderOverrides(body: Record<string, unknown>): {
  variables?: Record<string, unknown>;
  outputResolution?: CanvasResolution;
} {
  // Only forward a plain JSON object. Arrays / primitives / null → undefined.
  const variables = isPlainObject(body.variables) ? body.variables : undefined;
  // Accept canonical presets and aliases ("4k", "landscape-4k", …).
  const outputResolution =
    typeof body.outputResolution === "string"
      ? normalizeResolutionFlag(body.outputResolution)
      : undefined;
  return { variables, outputResolution };
}

/**
 * Build the `createRenderJob` config from a prepared render input. Shared by