function flipFlopimport { flipFlop } from "https://deno.land/x/pbkit@v0.0.72/core/parser/misc.ts"; flipFlop<T, U>(parser: RecursiveDescentParser,flipFn: AcceptFn<T>,flopFn: AcceptFn<U>,skipWsFn?: AcceptFn<void>,): (T | U)[]Type ParametersTUParametersparser: RecursiveDescentParserflipFn: AcceptFn<T>flopFn: AcceptFn<U>optionalskipWsFn: AcceptFn<void>Returns(T | U)[]