Initial

src/utilities/formatSlug.ts

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+import { FieldHook } from 'payload/types';
+
+const format = (val: string): string => val.replace(/ /g, '-').replace(/[^\w-/]+/g, '').toLowerCase();
+
+const formatSlug = (fallback: string): FieldHook => ({ value, originalDoc, data }) => {
+	if (typeof value === 'string')
+		return format(value);
+
+	const fallbackData = data && data[fallback] || originalDoc && originalDoc[fallback];
+
+	if (fallbackData && typeof fallbackData === 'string')
+		return format(fallbackData);
+
+
+	return value;
+};
+
+export default formatSlug;