Update carousel.js

.eslintrc.json

@@ -1,6 +1,7 @@
 {
   "root": true,
   "extends": [
+    "plugin:compat/recommended",
     "plugin:import/errors",
     "plugin:import/warnings",
     "plugin:unicorn/recommended",

build/.eslintrc.json

@@ -8,6 +8,7 @@
   },
   "extends": "../.eslintrc.json",
   "rules": {
+    "compat/compat": "off",
     "no-console": "off",
     "strict": "error"
   }

js/src/carousel.js

@@ -119,8 +119,9 @@ class Carousel extends BaseComponent {
 
     this._config = this._getConfig(config)
     this._indicatorsElement = SelectorEngine.findOne(SELECTOR_INDICATORS, this._element)
-    this._touchSupported = 'ontouchstart' in document.documentElement || navigator.maxTouchPoints > 0
-    this._pointerEvent = Boolean(window.PointerEvent)
+    /* eslint-disable-next-line compat/compat */
+    this._touchSupported = 'ontouchstart' in document.documentElement || (('maxTouchPoints' in navigator) && (navigator.maxTouchPoints > 0))
+    this._pointerEvent = PointerEvent in window
 
     this._addEventListeners()
   }

package-lock.json

@@ -1524,6 +1524,12 @@
       "dev": true,
       "optional": true
     },
+    "ast-metadata-inferer": {
+      "version": "0.4.0",
+      "resolved": "https://registry.npmjs.org/ast-metadata-inferer/-/ast-metadata-inferer-0.4.0.tgz",
+      "integrity": "sha512-tKHdBe8N/Vq2nLAm4YPBVREVZjMux6KrqyPfNQgIbDl0t7HaNSmy8w4OyVHYg/cvyn5BW7o7pVwpjPte89Zhcg==",
+      "dev": true
+    },
     "astral-regex": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/astral-regex/-/astral-regex-1.0.0.tgz",
@@ -2458,6 +2464,12 @@
         "quick-lru": "^4.0.1"
       }
     },
+    "caniuse-db": {
+      "version": "1.0.30001164",
+      "resolved": "https://registry.npmjs.org/caniuse-db/-/caniuse-db-1.0.30001164.tgz",
+      "integrity": "sha512-IbIthrNouxc17oTlwskmg3M1wUVjobS11fBGsym6EnTBZit6vtax2iDyZiSPHCRA1BRO9pO+IDhES8YyXNbaoQ==",
+      "dev": true
+    },
     "caniuse-lite": {
       "version": "1.0.30001164",
       "resolved": "https://registry.npmjs.org/caniuse-lite/-/caniuse-lite-1.0.30001164.tgz",
@@ -3926,6 +3938,36 @@
         "pkg-dir": "^2.0.0"
       }
     },
+    "eslint-plugin-compat": {
+      "version": "3.8.0",
+      "resolved": "https://registry.npmjs.org/eslint-plugin-compat/-/eslint-plugin-compat-3.8.0.tgz",
+      "integrity": "sha512-5CuWUSZXZkXLCQJBriEpndn/YWrvggDSHTpRJq++kR8GVcsWbTdp8Eh+nBA7JlrNi7ZJ/+kniOVXmn3bpnxuRA==",
+      "dev": true,
+      "requires": {
+        "ast-metadata-inferer": "^0.4.0",
+        "browserslist": "^4.12.2",
+        "caniuse-db": "^1.0.30001090",
+        "core-js": "^3.6.5",
+        "find-up": "^4.1.0",
+        "lodash.memoize": "4.1.2",
+        "mdn-browser-compat-data": "^1.0.28",
+        "semver": "7.3.2"
+      },
+      "dependencies": {
+        "core-js": {
+          "version": "3.8.0",
+          "resolved": "https://registry.npmjs.org/core-js/-/core-js-3.8.0.tgz",
+          "integrity": "sha512-W2VYNB0nwQQE7tKS7HzXd7r2y/y2SVJl4ga6oH/dnaLFzM0o2lB2P3zCkWj5Wc/zyMYjtgd5Hmhk0ObkQFZOIA==",
+          "dev": true
+        },
+        "semver": {
+          "version": "7.3.2",
+          "resolved": "https://registry.npmjs.org/semver/-/semver-7.3.2.tgz",
+          "integrity": "sha512-OrOb32TeeambH6UrhtShmF7CRDqhL6/5XpPNp2DuRH6+9QLw/orhp72j87v8Qa1ScDkvrrBNpZcDejAirJmfXQ==",
+          "dev": true
+        }
+      }
+    },
     "eslint-plugin-import": {
       "version": "2.22.1",
       "resolved": "https://registry.npmjs.org/eslint-plugin-import/-/eslint-plugin-import-2.22.1.tgz",
@@ -6604,6 +6646,12 @@
       "integrity": "sha1-Cwih3PaDl8OXhVwyOXg4Mt90A9E=",
       "dev": true
     },
+    "lodash.memoize": {
+      "version": "4.1.2",
+      "resolved": "https://registry.npmjs.org/lodash.memoize/-/lodash.memoize-4.1.2.tgz",
+      "integrity": "sha1-vMbEmkKihA7Zl/Mj6tpezRguC/4=",
+      "dev": true
+    },
     "lodash.merge": {
       "version": "4.6.2",
       "resolved": "https://registry.npmjs.org/lodash.merge/-/lodash.merge-4.6.2.tgz",
@@ -6837,6 +6885,15 @@
       "integrity": "sha512-jVU0Nr2B9X3MU4tSK7JP1CMkSvOj7X5l/GboG1tKRw52lLF1x2Ju92Ms9tNetCcbfX3hzlM73zYo2NKkWSfF/A==",
       "dev": true
     },
+    "mdn-browser-compat-data": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/mdn-browser-compat-data/-/mdn-browser-compat-data-1.1.2.tgz",
+      "integrity": "sha512-uBNX2P4iu3PZcXP20rL+n7fxN9PWZLj0y43QMe/1aXzqP3H6HbVOeePS0cBZCtMwcfr2Tugf1OHj+/wLam+dUg==",
+      "dev": true,
+      "requires": {
+        "extend": "3.0.2"
+      }
+    },
     "media-typer": {
       "version": "0.3.0",
       "resolved": "https://registry.npmjs.org/media-typer/-/media-typer-0.3.0.tgz",

package.json

@@ -105,6 +105,7 @@
     "cross-env": "^7.0.3",
     "eslint": "^7.14.0",
     "eslint-config-xo": "^0.33.1",
+    "eslint-plugin-compat": "^3.8.0",
     "eslint-plugin-import": "^2.22.1",
     "eslint-plugin-unicorn": "^23.0.0",
     "find-unused-sass-variables": "^3.0.0",