Typescript models do not have relationship functions

[thirionlogan]

Introduction

When I make a simple belongsTo relationship on a model, I get an error that states Property 'belongsTo' does not exist on type 'Object | typeof Model'.

Steps to reproduce issue

Example:

export const Page = bookshelf.model('Page', {
  tableName: 'page',
  book() {
    return this.belongsTo(Book);
  },
});

Expected behaviour

I expect to be able to use belongsTo without typescript errors

Actual behaviour

When defining a model in a typescript file, belongsTo gets a ts(2339) error: Property 'belongsTo' does not exist on type 'Object | typeof Model'.

[SirPhemmiey]

Hey, did you fix this? I'm having the same issue also