delete unused file

routes/blog/_crossfade.js

@@ -1,82 +0,0 @@
-import * as eases from 'eases-jsnext';
-import * as yootils from 'yootils';
-
-export default function crossfade({ fallback }) {
-	let requested = new Map();
-	let provided = new Map();
-
-	function crossfade(from, node) {
-		const to = node.getBoundingClientRect();
-		console.log({ from, to });
-		const dx = from.left - to.left;
-		const dy = from.top - to.top;
-
-		const dsx = (from.right - from.left) / (to.right - to.left);
-		const dsy = (from.bottom - from.top) / (to.bottom - to.top);
-
-		console.log({ dsx, dsy });
-
-		const sx = yootils.linearScale([0, 1], [dsx, 1]);
-		const sy = yootils.linearScale([0, 1], [dsy, 1]);
-
-		const style = getComputedStyle(node);
-		const transform = style.transform === 'none' ? '' : style.transform;
-
-		return {
-			duration: 4000,
-			easing: eases.quintOut,
-			css: (t, u) => `
-				opacity: ${t};
-				transform-origin: 0 0;
-				transform: ${transform} translate(${u * dx}px,${u * dy}px) scale(${sx(t)}, ${sy(t)});
-			`,
-			tick: (t, u) => {
-				// console.log({
-				// 	sx: 1 + u * dsx,
-				// 	sy: 1 + u * dsy,
-				// });
-			}
-		};
-	}
-
-	return {
-		send(node, params) {
-			provided.set(params.key, {
-				rect: node.getBoundingClientRect()
-			});
-
-			return () => {
-				if (requested.has(params.key)) {
-					const { rect } = requested.get(params.key);
-					requested.delete(params.key);
-
-					return crossfade(rect, node);
-				}
-
-				// if the node is disappearing altogether
-				// (i.e. wasn't claimed by the other list)
-				// then we need to supply an outro
-				provided.delete(params.key);
-				return fallback(node, params);
-			};
-		},
-
-		receive(node, params) {
-			requested.set(params.key, {
-				rect: node.getBoundingClientRect()
-			});
-
-			return () => {
-				if (provided.has(params.key)) {
-					const { rect } = provided.get(params.key);
-					provided.delete(params.key);
-
-					return crossfade(rect, node);
-				}
-
-				requested.delete(params.key);
-				return fallback(node, params);
-			};
-		}
-	};
-}