Better AuthBA
Better Auth•8mo ago
stu

D1 incorrect dialect

I'm trying to create an auth instance with D1 and getting an error like Type 'D1Dialect' is not assignable to type 'Dialect'.
The types returned by 'createDriver().acquireConnection()' are incompatible between these types.
Type 'Promise<import("<my-project>/node_modules/kysely/dist/esm/driver/database-connection").DatabaseConnection>' is not assignable to type 'Promise<import("<my-project>/node_modules/better-auth/node_modules/kysely/dist/esm/driver/database-connection").DatabaseConnection>'.

My code is like:
import { D1Dialect } from "kysely-d1";
import { betterAuth } from "better-auth";

export const auth = (env: Env) =>
  betterAuth({
    database: {
      dialect: new D1Dialect({
        database: env.DB,
      }),
      type: "sqlite",
    },
// .. the rest

Any suggestions?
Solution
Following up if anyone encounters this in the future. Could resolve this by using older versions of kysely-d1 and kysely.

Relevant package dependencies look like:
    "better-auth": "^1.2.7",
    "kysely": "^0.27.4",
    "kysely-d1": "^0.3.0",
Jump to solution
Was this page helpful?