Hono•3d ago

Envs not extendable with `createFactory`

When utilizing the createFactory method, middleware is unable to modify or extend any of the types. This seems like a bug/issue as any auth middlware would want to ensure a session/user variable would be defined for type safety. factory.ts

export type HonoEnv = {
  Variables: {
    session: SessionDto | null;
  };
};

export const factory = createFactory<HonoEnv>();

export type HonoEnv = {
  Variables: {
    session: SessionDto | null;
  };
};

export const factory = createFactory<HonoEnv>();

middleware.ts

const authed: MiddlewareHandler<{
  Variables: {
    session: SessionDto;
  };
}> = factory.createMiddleware(async (c, next) => {
  if (!c.var.session) {
    throw Unauthorized('You must be logged in to access this resource');
  }
  return next();
});

const authed: MiddlewareHandler<{
  Variables: {
    session: SessionDto;
  };
}> = factory.createMiddleware(async (c, next) => {
  if (!c.var.session) {
    throw Unauthorized('You must be logged in to access this resource');
  }
  return next();
});

1 Reply

rykuno•3d ago

in the screenshot examples, I have one working example(without factory) and one broken(with factory).

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Envs not extendable with `createFactory`