Fix new linter errors.

src/computed-size.js

@@ -3,7 +3,7 @@ const e = document.createElement('div');
 e.style.cssText = 'width:10px;padding:2px;box-sizing:border-box;';
 element.appendChild(e);
 
-const width = window.getComputedStyle(e, null).width;
+const { width } = window.getComputedStyle(e, null);
 const ret = width === '10px';
 
 element.removeChild(e);

src/get-number-style.js

@@ -11,8 +11,10 @@ import COMPUTED_SIZE_INCLUDES_PADDING from './computed-size';
  *     will return 'auto' when the element doesn't have margins instead of
  *     the computed style.
  */
-export default function getNumberStyle(element, style,
+export default function getNumberStyle(
-  styles = window.getComputedStyle(element, null)) {
+  element, style,
+  styles = window.getComputedStyle(element, null),
+) {
   let value = getNumber(styles[style]);
 
   // Support IE<=11 and W3C spec.

src/layout.js

@@ -100,7 +100,9 @@ export function getShortColumn(positions, buffer) {
  * @param {number} buffer Vertical buffer for the height of items.
  * @return {Point}
  */
-export function getItemPosition({ itemSize, positions, gridSize, total, threshold, buffer }) {
+export function getItemPosition({
+  itemSize, positions, gridSize, total, threshold, buffer,
+}) {
   const span = getColumnSpan(itemSize.width, gridSize, total, threshold);
   const setY = getAvailablePositions(positions, span, total);
   const shortColumnIndex = getShortColumn(setY, buffer);

src/shuffle.js

@@ -310,15 +310,13 @@ class Shuffle extends TinyEmitter {
    * @protected
    */
   setItemTransitions(items) {
-    const speed = this.options.speed;
+    const { speed, easing } = this.options;
-    const easing = this.options.easing;
     const positionProps = this.options.useTransforms ? ['transform'] : ['top', 'left'];
 
     // Allow users to transtion other properties if they exist in the `before`
     // css mapping of the shuffle item.
-    const properties = positionProps.concat(
+    const cssProps = Object.keys(ShuffleItem.Css.HIDDEN.before).map(k => hyphenate(k));
-      Object.keys(ShuffleItem.Css.HIDDEN.before).map(k => hyphenate(k)),
+    const properties = positionProps.concat(cssProps).join();
-    ).join();
 
     items.forEach((item) => {
       item.element.style.transitionDuration = speed + 'ms';
@@ -1069,7 +1067,7 @@ class Shuffle extends TinyEmitter {
 
     // Save current duration and delay.
     const data = elements.map((element) => {
-      const style = element.style;
+      const { style } = element;
       const duration = style.transitionDuration;
       const delay = style.transitionDelay;