type alias ValueHandlerimport { type ValueHandler } from "https://dotland.deno.dev/x/lume@v2.2.1/deps/cliffy.ts"; Value handler for custom value processing. Type ParametersoptionalTValue = anyoptionalTReturn = TValuedefinition: (val: TValue, previous?: TReturn) => TReturnimport ValueHandlerimport { ValueHandler } from "https://dotland.deno.dev/x/lume@v2.2.1/deps/cliffy.ts";