Working subtraiting

src/util/misc.ts

@@ -2,6 +2,17 @@ import { Fn } from "hotscript"
 import { Simplify } from "type-fest"
 
 
+/**
+ * Represents the common keys between two types.
+ * @template A - The first type.
+ * @template B - The second type.
+ */
+export type CommonKeys<A, B> = Extract<keyof A, keyof B>
+
+export type KeysOnlyInLeft<Left, Right> = {
+    [K in Exclude<keyof Left, keyof Right>]: Left[K]
+}
+
 export interface SimplifyFn extends Fn {
     return: Simplify<this["arg0"]>
 }