How to use backbone js with squarespace website

I have a site already built using backbone js and handlebars are used for templating purpose. I want to migrate pages from that site to a squarespace website. I know we can use custom code with square space website. Is there any way I can migrate my pages to squarespace wesbite without requiring too much changes. Also, is there any tutorial available to use backbone js with squarespace websites.

You cannot import templating or structural code from other hosting solutions. If migrating to Squarespace, you must add your page content manually and adapt it to Squarespace's layouting tools.