type alias T.Requiredimport { type T } from "https://deno.land/x/ts_toolbelt_unofficial@1.1.0/mod.ts"; const { Required } = T; Make L required (deeply or not) ExamplesExample 1 Type ParametersL extends Listoptionaldepth extends Depth = "flat"definition: Cast<RequiredPart<L, depth>, List>