function applyToimport { applyTo } from "https://deno.land/x/value_schema@v4.0.0-rc.2/dist-deno/appliers/ifNull.ts"; applyTo<T>(values: Values,rules: Rules<T>,keyStack: Key[],): values is Values<T>apply schema Type ParametersTParametersvalues: Valuesinput/output values rules: Rules<T>rules keyStack: Key[]key stack for error handling Returnsvalues is Values<T>escapes from applyTo chain or not