method ZodError.prototype.flattenRe-exportimport { ZodError } from "https://deno.land/x/zod@v3.14.2/mod.ts"; flatten(mapper?: (issue: ZodIssue) => string): { formErrors: string[]; fieldErrors: { [k: string]: string[]; }; }flatten<U>(mapper?: (issue: ZodIssue) => U): { formErrors: U[]; fieldErrors: { [k: string]: U[]; }; }flatten<U = string>(mapper?: (issue: ZodIssue) => U): { formErrors: U[]; fieldErrors: { [k: string]: U[]; }; }Parametersoptionalmapper: (issue: ZodIssue) => stringReturns{ formErrors: string[]; fieldErrors: { [k: string]: string[]; }; }Type ParametersUParametersoptionalmapper: (issue: ZodIssue) => UReturns{ formErrors: U[]; fieldErrors: { [k: string]: U[]; }; }Type ParametersoptionalU = stringParametersoptionalmapper: (issue: ZodIssue) => U = [UNSUPPORTED]Returns{ formErrors: U[]; fieldErrors: { [k: string]: U[]; }; }