You cannot import it because it is not a type, it is a generic (or type argument). It gets replaced automatically with ArwenBigUint in wasm mode and RustBigUint in debug mode. If you need it in a struct, you have to pass it on as a generic, e.g. MyStruct { x: BigUint ... }
You cannot import it because it is not a type, it is a generic (or type argument). It gets replaced automatically with ArwenBigUint in wasm mode and RustBigUint in debug mode. If you need it in a struct, you have to pass it on as a generic, e.g. MyStruct { x: BigUint ... }