MRVDH/picnic-api v4.10.0 on GitHub

⚠️ Breaking change

The default x-picnic-agent is now 30100;1.246.1-15599; (was 1.236.1-15553). For this app version Picnic serves a few pages as a React Server Components payload (text/x-component) instead of a Fusion page. app.getPage now throws an UnexpectedPageFormatError for those pages, where it used to return JSON.

Pages affected so far (out of 95 I tested):

category-tree-root (search tab shortcuts and categories)
profile-root
promo-group-deep-dive?promo_group_id=<id>

If you call getPage on one of these, switch to the new app.getRscPage, or catch the error and fall back:

try {
  const page = await client.app.getPage(pageId);
} catch (error) {
  if (!PicnicClient.isUnexpectedPageFormatError(error)) throw error;
  const rscPage = await client.app.getRscPage(error.pageId);
}

To keep the old behaviour for now, pass the previous agent: new PicnicClient({ agent: "30100;1.236.1-15553;" }). I'd expect Picnic to move more pages over time, so that's a temporary workaround.

New

app.getRscPage(pageId): fetches a page served as RSC and parses it into rows (JSON rows by row id) and modules (client component references). The page data is in the props of the React elements.
PicnicClient.UnexpectedPageFormatError and PicnicClient.isUnexpectedPageFormatError.
sendRequest returns text/x-component responses as raw text instead of failing on JSON.parse.

All other read-only routes that send the agent header return the same data for both agent versions.

What's Changed

feat(app): support pages served as React Server Components by @MRVDH in #57

Full Changelog: v4.9.0...v4.10.0