chore: add console warning in dev about arrayMove deprecation

Author: Clauderic Demers

.eslintrc.json

@@ -1,6 +1,7 @@
 {
   "extends": ["plugin:shopify/react"],
   "rules": {
+    "no-process-env": "off",
     "no-lonely-if": "off",
     "no-undefined": "off",
     "no-param-reassign": "off",

src/utils.js

@@ -1,9 +1,19 @@
+/* global process */
 import invariant from 'invariant';
 
 export function arrayMove(array, from, to) {
   // Will be deprecated soon. Consumers should install 'array-move' instead
   // https://www.npmjs.com/package/array-move
 
+  if (process.env.NODE_ENV !== 'production') {
+    if (typeof console !== 'undefined') {
+      // eslint-disable-next-line no-console
+      console.warn(
+        "Deprecation warning: arrayMove will no longer be exported by 'react-sortable-hoc' in the next major release. Please install the `array-move` package locally instead. https://www.npmjs.com/package/array-move",
+      );
+    }
+  }
+
   array = array.slice();
   array.splice(to < 0 ? array.length + to : to, 0, array.splice(from, 1)[0]);