Unable to run >= 0.6.1 on Edge / v8 runtimes

Cannot read properties of null (reading 'split')
  TypeError: Cannot read properties of null (reading 'split')
    at globalThis.fetch (index.js:8457:59)
    at async getIsSchemaDatabase (index.js:3926:18)
    at async HttpClient2.getIsSchemaDatabase (index.js:4248:32)
TypeError

I've narrowed this down to a change between 0.6.0 and 0.6.1.

My code runs fine on 0.6.0, but fails on 0.6.1 and 0.6.2.

https://github.com/tursodatabase/libsql-client-ts/compare/v0.6.0...v0.6.1

I'm not using libsql-client directly, but instead through drizzle.

My code is simply:

const client = createClient({
	url: process.env.TURSO_URL as string,
	authToken: process.env.TURSO_TOKEN as string,
});

const db = drizzle(client, { schema });

const videos = await db.query.youtubeVideoTable.findMany();