feat: Convert src/runtime/internal/animations.ts to JavaScript

src/runtime/internal/animations.ts

@@ -2,98 +2,70 @@ import { identity as linear, noop } from './utils';
 import { now } from './environment';
 import { loop } from './loop';
 import { create_rule, delete_rule } from './style_manager';
-import { AnimationConfig } from '../animate';
+/** @param {Element & ElementCSSInlineStyle} node
-
+ * @param {PositionRect} from
-//todo: documentation says it is DOMRect, but in IE it would be ClientRect
+ * @param {AnimationFn} fn
-type PositionRect = DOMRect | ClientRect;
+ * @returns {any}
-
+ */
-type AnimationFn = (
+export function create_animation(node, from, fn, params) {
-	node: Element,
+    if (!from)
-	{ from, to }: { from: PositionRect; to: PositionRect },
+        return noop;
-	params: any
-) => AnimationConfig;
-
-export function create_animation(
-	node: Element & ElementCSSInlineStyle,
-	from: PositionRect,
-	fn: AnimationFn,
-	params
-) {
-	if (!from) return noop;
-
     const to = node.getBoundingClientRect();
-	if (
+    if (from.left === to.left &&
-		from.left === to.left &&
         from.right === to.right &&
         from.top === to.top &&
-		from.bottom === to.bottom
+        from.bottom === to.bottom)
-	)
         return noop;
-
+    const { delay = 0, duration = 300, easing = linear, 
-	const {
-		delay = 0,
-		duration = 300,
-		easing = linear,
     // @ts-ignore todo: should this be separated from destructuring? Or start/end added to public api and documentation?
     start: start_time = now() + delay, 
     // @ts-ignore todo:
-		end = start_time + duration,
+    end = start_time + duration, tick = noop, css } = fn(node, { from, to }, params);
-		tick = noop,
-		css
-	} = fn(node, { from, to }, params);
-
     let running = true;
     let started = false;
     let name;
-
+    /** @returns {void} */
     function start() {
         if (css) {
             name = create_rule(node, 0, 1, duration, delay, easing, css);
         }
-
         if (!delay) {
             started = true;
         }
     }
-
+    /** @returns {void} */
     function stop() {
-		if (css) delete_rule(node, name);
+        if (css)
+            delete_rule(node, name);
         running = false;
     }
-
     loop((now) => {
         if (!started && now >= start_time) {
             started = true;
         }
-
         if (started && now >= end) {
             tick(1, 0);
             stop();
         }
-
         if (!running) {
             return false;
         }
-
         if (started) {
             const p = now - start_time;
             const t = 0 + 1 * easing(p / duration);
             tick(t, 1 - t);
         }
-
         return true;
     });
-
     start();
-
     tick(0, 1);
-
     return stop;
 }
-
+/** @param {Element & ElementCSSInlineStyle} node
-export function fix_position(node: Element & ElementCSSInlineStyle) {
+ * @returns {void}
+ */
+export function fix_position(node) {
     const style = getComputedStyle(node);
-
     if (style.position !== 'absolute' && style.position !== 'fixed') {
         const { width, height } = style;
         const a = node.getBoundingClientRect();
@@ -103,14 +75,26 @@ export function fix_position(node: Element & ElementCSSInlineStyle) {
         add_transform(node, a);
     }
 }
-
+/** @param {Element & ElementCSSInlineStyle} node
-export function add_transform(node: Element & ElementCSSInlineStyle, a: PositionRect) {
+ * @param {PositionRect} a
+ * @returns {void}
+ */
+export function add_transform(node, a) {
     const b = node.getBoundingClientRect();
-
     if (a.left !== b.left || a.top !== b.top) {
         const style = getComputedStyle(node);
         const transform = style.transform === 'none' ? '' : style.transform;
-
         node.style.transform = `${transform} translate(${a.left - b.left}px, ${a.top - b.top}px)`;
     }
 }
+
+
+/** @typedef {DOMRect | ClientRect} PositionRect */
+/**
+ * @typedef {(
+ * 	node: Element,
+ * 	{ from, to }: { from: PositionRect; to: PositionRect },
+ * 	params: any
+ * ) => AnimationConfig} AnimationFn
+ */
+