`transformResponseFromProvider(providerConfig, data, options = {})` annotated
nothing, so TS inferred `options` as `{}` from its default value and rejected
every read of it: `top_n` x6, `documents` x4, `return_documents` x2 across the
DeepInfra and Voyage adapters. All 12 of the file's diagnostics, one cause.
Declared `RerankResponseOptions` from the JSDoc that already documents these
fields on handleRerank, with `documents` as `Array<string | { text?: string }>`
— the two forms the Cohere-compatible API accepts and the adapters already
branch on. `providerConfig` and `data` stay unannotated; only `options` was
producing errors and only `options` is touched.
280 -> 268, zero new, on a line-number-agnostic diff of the full tsc error set.
Tests: `{ text }` documents were only ever exercised through the *request*
adapter (#5332, #7809) — every response-adapter test passed plain strings, so
the `typeof doc === "string" ? doc : doc?.text` branch on the response side was
uncovered, and that branch is exactly what gives the declared type its union.
Added rerank-object-documents-response-path.test.ts (5 tests): object-form
documents resolved through both adapters, a mixed string/object array, the
`{}`-without-text fallback, and Voyage's index remap across an empty `{ text: "" }`
document. They pass against the parent commit's rerank.ts too — no behavior
change. 43/43 across the 6 rerank/media-cost suites.
Co-authored-by: backryun <busan011@ormbiz.co.kr>
