This package provides accurate serialization and deserialization types for the popular package SuperJSON. It's a shallow wrapper, so just install this instead of superjson and you'll get the type definitions.
Note: This package is unstable so I will change whatever I feel like whenever I feel like. So I might make breaking changes like changing the way the wrapper works or update the types to be more accurate without a major version bump.
npm install superjson-types
import { serialize, deserialize } from "superjson-types";
const serialized = serialize({ a: new Date(), b: "hi", c: new Set([1, 2, 3]) });
/* typeof serialized: {
json: { a: string, b: string, c: number[] },
meta: { a: ["Date"], c: ["set"] }
} */
const deserialized = deserialize(serialized);
// typeof deserialized: { a: Date, b: string, c: Set<number> }