fix sveltekit type error in firebase-frameworks - #673
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Node 24 / current @types/node no longer lets Buffer satisfy the DOM BodyInit type, breaking tsc. Wrap rawBody as new Uint8Array(...) at the Request construction site; runtime behavior is unchanged.
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This pull request updates the SvelteKit request handler to wrap the request's raw body in a Uint8Array. The reviewer pointed out that instantiating a new Uint8Array creates an unnecessary memory copy, and suggested casting the existing buffer to Uint8Array instead to improve performance and reduce memory overhead.
annajowang
approved these changes
Aug 4, 2026
Assert rawBody to Uint8Array<ArrayBuffer> instead of wrapping it in new Uint8Array, which copied the whole body. Buffer is ArrayBuffer-backed at runtime; only its ArrayBufferLike type keeps BodyInit from accepting it.
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tscfails under Node 24 / latest@types/nodebecauseBufferno longer satisfies the DOMBodyInittype:Wrap
request.rawBodyasnew Uint8Array(...). ValidBodyInit, runtime unchanged (Bufferis aUint8Arraysubclass).Verified: build passes, and POST bodies still round-trip through a real SvelteKit app.