Getting TypeScript definitions from defineType function in Sanity schema builder

const environment: {
    type: "document";
    name: "environment";
} & Omit<DocumentDefinition, "preview"> & {
    preview?: PreviewConfig<{
        title: string;
        subheader: string;
        image: string;
    }, Record<"image" | "title" | "subheader", any>> | undefined;
}