The Serwist createSerwistRoute factory returns a GET handler with
`params: Promise<{ path: string }>` hardcoded. Next.js infers the
param shape from the directory name — so the directory MUST be
named `[path]` (single segment) for the type to match.
`[[...slug]]` (catch-all) was wrong on two counts:
1. The segment name is `slug`, not `path` (Serwist expects
exactly `path`).
2. The shape is `string[]` (array), not `string` (Serwist
expects a single string).
Per the Serwist source comment: 'Asset and chunk names must be at
the top, as our path is /serwist/[path], not /serwist/[...path]'
— all SW output files (sw.js, workbox-XXX.js) are flat, single
segment is sufficient.
The fix is a directory rename only — the route.ts content
(createSerwistRoute call) is unchanged.
Verification:
- pnpm build now succeeds (TypeScript check passes)
- The Serwist route appears in the build output as `● /serwist/[path]`
prerendered with `sw.js` and `sw.js.map` static pages
- `pnpm start` + Chrome: `/serwist/sw.js` will be served by the
route handler and registered by <SerwistProvider>
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