fix: Update usage type to match documented behavior #1403
+6
−7
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Changes being requested
The TypeScript type definition for the
usage
field does not match the documented behavior.According to the documentation,
usage
can benull
for all chunks except the last one, but the current type definition does not allownull
.This change updates the type to correctly reflect the API response.
Additional context & links
usage
isnull
except for the last chunk.