mostly finished rewrite

public/node_modules/react-bootstrap/cjs/createChainedFunction.d.ts

@@ -0,0 +1,11 @@
+/**
+ * Safe chained function
+ *
+ * Will only create a new function if needed,
+ * otherwise will pass back existing functions or null.
+ *
+ * @param {function} functions to chain
+ * @returns {function|null}
+ */
+declare function createChainedFunction(...funcs: any[]): any;
+export default createChainedFunction;