> ## Documentation Index
> Fetch the complete documentation index at: https://stellaraddresskit.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Flutter Web: BigInt

> Avoiding precision loss in the browser.

Flutter Web compiles to JavaScript, which means it shares the same 64-bit float limitations as any other JS application.

## The Problem

If you parse a large Memo ID (near `18,446,744,073,709,551,615`) as an `int` in Dart when running on Web, you will lose precision.

## The Solution

The Dart package uses `BigInt` internally and returns the `routingId` as a `String`.

<Warning>
  Never convert the `routingId` to an `int` if your app targets Web. Always keep it as a `String` or a `BigInt`.
</Warning>