Using mix of AND and OR clause in sails and waterline

Question

How can I use OR and AND clause in Sailsjs and its ORM Waterline? For example I have a table of books

 _______________________________________
| book_name |          


        

Answer 1

  let booksResult=await Book.find().
                        where({author: "Author-1", 
                           or: [{ free: true  }, { public: true  }]
                        });