Knex: is it possible to build nested Join query?

Hi, Great work by Knexjs team. I am trying out knexjs over ORM with one small example having many to many relationship. The Example is of Authors and Books where auhtors table and book table have many to many relationship through author_books table. I want to get particular book with all the authors. Below is raw query which gives the expected result. But I am not getting how to build this query using Knexjs? Any help would be appreciated.

Note: I am using Knexjs with javascript ES6.

Query:-

SELECT  `book`.`id` ,  `book`.`title` ,  `authors`.`id` AS  `authors.id` ,  `authors`.`name`
AS  `authors.authorname` ,  `authors.author_books`.`book_id` 
AS  `authors.author_books.bookId` , `authors.author_books`.`author_id` 
AS  `authors.author_books.author_id` 
FROM  `books` AS  `book` 
LEFT OUTER JOIN (
 `author_books` AS  `authors.author_books` 
INNER JOIN  `authors` AS  `authors` ON  `authors`.`id` =  `authors.author_books`.`author_id`
) ON  `book`.`id` =  `authors.author_books`.`book_id` 
WHERE  `book`.`id` =1

this is the query I am trying to build using Knexjs.

this.Knex('books as book')
.leftOuterJoin('author_books as authors.author_books', function(){
  // How could I nest INNER JOIN in LEFT OUTER JOIN

  this.on('book.id', 'authors.author_books.book_id')
}).select('book.id', 'book.title', 'authors.id as authors.id'
  , 'authors.name as authors.name', 'authors.author_books.book_id as authors.author_books.book_id'
  , 'authors.author_books.author_id as authors.auhtor_books.author_id')
.where('book.id', id)

Please let me know if I am Wrong somewhere?