http://www.fishbrowser.com/_files/js/FancyLink.js

1  /*
2  @preserve
3  Don't mess with this file -- it's automatically generated.
4*/const setUpFancyLink=()=>{const{IntersectionObserver:a}=window;if(!a)return;const b=new a(a=>{a.forEach(({target:a,isIntersecting:b})=>{b?a.classList.add("in-viewport"):a.classList.remove("in-viewport")})});document.querySelectorAll(".fancy-link").forEach(a=>{b.observe(a)}),window.IS_STORYBOOK&&window.observers&&window.observers.add(b);const{MutationObserver:c}=window;if(c){const a=new c(a=>{for(const c of a)for(const a of c.addedNodes)a instanceof HTMLElement&&a.querySelectorAll(".fancy-link").forEach(a=>{b.observe(a)})});a.observe(document.body,{childList:!0,subtree:!0}),window.IS_STORYBOOK&&window.observers&&window.observers.add(a)}};window.IS_STORYBOOK||setUpFancyLink();