Added UNSAFE_ prefix to deprecated lifecycle methods to avoid warnings in React 16.9

Author: akiran

package.json

@@ -1,6 +1,6 @@
 {
   "name": "react-slick",
-  "version": "0.24.0",
+  "version": "0.25.0",
   "description": " React port of slick carousel",
   "main": "./lib",
   "files": [

src/inner-slider.js

@@ -52,7 +52,7 @@ export class InnerSlider extends React.Component {
       this.list.style.height = getHeight(elem) + "px";
     }
   };
-  componentWillMount = () => {
+  UNSAFE_componentWillMount = () => {
     this.ssrInit();
     this.props.onInit && this.props.onInit();
     if (this.props.lazyLoad) {
@@ -107,7 +107,7 @@ export class InnerSlider extends React.Component {
       window.attachEvent("onresize", this.onWindowResized);
     }
   };
-  componentWillUnmount = () => {
+  UNSAFE_componentWillUnmount = () => {
     if (this.animationEndCallback) {
       clearTimeout(this.animationEndCallback);
     }
@@ -127,7 +127,7 @@ export class InnerSlider extends React.Component {
       clearInterval(this.autoplayTimer);
     }
   };
-  componentWillReceiveProps = nextProps => {
+  UNSAFE_componentWillReceiveProps = nextProps => {
     let spec = {
       listRef: this.list,
       trackRef: this.track,
@@ -264,9 +264,7 @@ export class InnerSlider extends React.Component {
       };
       if (this.props.centerMode) {
         let currentWidth = `${childrenWidths[this.state.currentSlide]}px`;
-        trackStyle.left = `calc(${
-          trackStyle.left
-        } + (100% - ${currentWidth}) / 2 ) `;
+        trackStyle.left = `calc(${trackStyle.left} + (100% - ${currentWidth}) / 2 ) `;
       }
       this.setState({
         trackStyle
@@ -276,15 +274,15 @@ export class InnerSlider extends React.Component {
     let childrenCount = React.Children.count(this.props.children);
     const spec = { ...this.props, ...this.state, slideCount: childrenCount };
     let slideCount = getPreClones(spec) + getPostClones(spec) + childrenCount;
-    let trackWidth = 100 / this.props.slidesToShow * slideCount;
+    let trackWidth = (100 / this.props.slidesToShow) * slideCount;
     let slideWidth = 100 / slideCount;
     let trackLeft =
-      -slideWidth *
-      (getPreClones(spec) + this.state.currentSlide) *
-      trackWidth /
+      (-slideWidth *
+        (getPreClones(spec) + this.state.currentSlide) *
+        trackWidth) /
       100;
     if (this.props.centerMode) {
-      trackLeft += (100 - slideWidth * trackWidth / 100) / 2;
+      trackLeft += (100 - (slideWidth * trackWidth) / 100) / 2;
     }
     let trackStyle = {
       width: trackWidth + "%",
@@ -390,8 +388,7 @@ export class InnerSlider extends React.Component {
     );
     onLazyLoad && slidesToLoad.length > 0 && onLazyLoad(slidesToLoad);
     this.setState(state, () => {
-      asNavFor &&
-        asNavFor.innerSlider.slideHandler(index);
+      asNavFor && asNavFor.innerSlider.slideHandler(index);
       if (!nextState) return;
       this.animationEndCallback = setTimeout(() => {
         const { animating, ...firstBatch } = nextState;

src/slider.js

@@ -25,7 +25,7 @@ export default class Slider extends React.Component {
   }
 
   // handles responsive breakpoints
-  componentWillMount() {
+  UNSAFE_componentWillMount() {
     // performance monitoring
     //if (process.env.NODE_ENV !== 'production') {
     //const { whyDidYouUpdate } = require('why-did-you-update')
@@ -67,7 +67,7 @@ export default class Slider extends React.Component {
     }
   }
 
-  componentWillUnmount() {
+  UNSAFE_componentWillUnmount() {
     this._responsiveMediaHandlers.forEach(function(obj) {
       enquire.unregister(obj.query, obj.handler);
     });
@@ -106,9 +106,7 @@ export default class Slider extends React.Component {
         process.env.NODE_ENV !== "production"
       ) {
         console.warn(
-          `slidesToScroll should be equal to 1 in centerMode, you are using ${
-            settings.slidesToScroll
-          }`
+          `slidesToScroll should be equal to 1 in centerMode, you are using ${settings.slidesToScroll}`
         );
       }
       settings.slidesToScroll = 1;
@@ -117,19 +115,15 @@ export default class Slider extends React.Component {
     if (settings.fade) {
       if (settings.slidesToShow > 1 && process.env.NODE_ENV !== "production") {
         console.warn(
-          `slidesToShow should be equal to 1 when fade is true, you're using ${
-            settings.slidesToShow
-          }`
+          `slidesToShow should be equal to 1 when fade is true, you're using ${settings.slidesToShow}`
         );
       }
       if (
         settings.slidesToScroll > 1 &&
         process.env.NODE_ENV !== "production"
       ) {
         console.warn(
-          `slidesToScroll should be equal to 1 when fade is true, you're using ${
-            settings.slidesToScroll
-          }`
+          `slidesToScroll should be equal to 1 when fade is true, you're using ${settings.slidesToScroll}`
         );
       }
       settings.slidesToShow = 1;