Index: node_modules/react-redux/src/utils/warning.ts
===================================================================
--- node_modules/react-redux/src/utils/warning.ts	(revision a762898ecd37a452c782821d4c2c4955c6ed2521)
+++ node_modules/react-redux/src/utils/warning.ts	(revision a762898ecd37a452c782821d4c2c4955c6ed2521)
@@ -0,0 +1,21 @@
+/**
+ * Prints a warning in the console if it exists.
+ *
+ * @param {String} message The warning message.
+ * @returns {void}
+ */
+export default function warning(message: string) {
+  /* eslint-disable no-console */
+  if (typeof console !== 'undefined' && typeof console.error === 'function') {
+    console.error(message)
+  }
+  /* eslint-enable no-console */
+  try {
+    // This error was thrown as a convenience so that if you enable
+    // "break on all exceptions" in your console,
+    // it would pause the execution at this line.
+    throw new Error(message)
+    /* eslint-disable no-empty */
+  } catch (e) {}
+  /* eslint-enable no-empty */
+}