Discussion on: Using a TypeScript interface to define model properties in Objection.js

This is a hack, probably not recommended, but this can work:

class BlogPost extends Model {
    id:number;
    title: string;
    content: string;
    slug: string;
    [k: string]: any;

    static get tableName() {
        return "blog_posts";
    }
}

Upside,

You can add your database columns as part of the model and your IDE should pick them up

Downside

Because of the [k: string]: any property, Typescript will not warn if an undefined property was accessed on instances of BlogPost.

I.e.

const post = await BlogPost.query().findById(1);
const someImportantVariable = post.undefined_property;

The code above will fly with Typescript, instead of it previously highlighting post.undefined_property ...