import { type replaceProps } from "https://deno.land/x/arktype@v1.0.10-alpha/utils/generics.ts";
Replace existing keys of o without altering readonly or optional modifiers
Type Parameters
replacements extends -readonly [k in keyof o]?: unknown
definition: evaluate<[k in keyof o]: k extends keyof replacements ? replacements[k] : o[k]>