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node_modules/redux/src/utils/warning.ts

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+/**
+ * Prints a warning in the console if it exists.
+ *
+ * @param message The warning message.
+ */
+export default function warning(message: string): void {
+  /* 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)
+  } catch (e) {} // eslint-disable-line no-empty
+}