Redirect from the checkout page

[maxim-danilov]

Hello! :)

We need to redirect our customers from the checkout pages (of our storefront) to our main website. 

I tried:

1) "Traffic Control‑Bulk Redirectsby Refersion, Inc." app - redirects only from non-existing pages/routes

2) Shopify - URL redirects menu - redirects only from non-existing pages/routes

3) Inject a js code to 'theme.liquid' and 'checkout.liquid' templates - shopify plus is required for editing 'checkout.liquid', that is pretty expensive

Could you please help me to add redirection (especially the checkout pages)?

Thanks :)

[Jason]

What is the redirection for? That will help give further info into things like _when_ you're hoping for it to fire. I am thinking you really don't want to redirect people away from checkout when it's not completed but maybe you do...

[maxim-danilov]

Because we built a totally custom frontend (with reactjs, hosted on AWS) for our online shop. Now we need to remove/hide the storefront website from our customers. So we should always and immediately redirect our customers from the storefront to our custom frontend.