23 Preloading

23 Preloading🔗ℹ

This module provides a middleware and facilities for working with preload headers.

parameter
(current-preload-dependencies) → (listof string?)
(current-preload-dependencies deps) → void?
deps : (listof string?)

This parameter holds the set of absolute dependency URLs for the current request.

procedure
(track-preload-dependency! dependency) → void?
dependency : string?

procedure
(make-preload-headers) → (listof header?)

Converts the current-preload-dependencies into a list of Link headers.

procedure
(wrap-preload handler) → (-> request? any/c ... response?)
handler : procedure?

Wraps handler so that preload dependencies can be tracked during its execution.