import { type FirehoseTransformationHandler } from "https://deno.land/x/lambda@1.24.3/types.d.ts";
definition: Handler<FirehoseTransformationEvent, FirehoseTransformationResult>
x/lambda/types.d.ts>FirehoseTransformationHandler
import { type FirehoseTransformationHandler } from "https://deno.land/x/lambda@1.24.3/types.d.ts";