#38 Sandbox bootstrap's "visible-print"

Author: Andrii Kirmas

__sandbox__/atom.test.ts

@@ -0,0 +1,22 @@
+import { Cut, Strip, UnionToIntersection } from "src/ts-swiss.types"
+
+it("stripper", () => {
+  type C1 = `${"visible-print"}-${"inline"|"block"|"inline-block"}`|`col${""|"-y"|"-x"}`|"display"
+  type Pairs<classes extends string> = {
+    [root in Strip<classes, "-">]: {
+        [m1 in Merge<root, `${root}-${Strip<Cut<classes, `${root}-`, true>, "-">}`>]: true
+      }
+    }
+
+  type Merge<Base extends string, Result extends string> = [Result] extends [never] ? Base : [UnionToIntersection<Result>] extends [never] ? Base : Result
+
+  const checks: Record<string, Pairs<C1>> = {
+    "x": {
+      visible: {"visible-print": true},
+      col: {col: true},
+      display: {display: true}
+    }
+  }
+
+  expect(checks).toBeInstanceOf(Object)
+})

src/ts-swiss.types.ts

@@ -51,3 +51,10 @@ export type PartDeep<T> = Exclude<T, AnyObject>
 )
 
 export type KeyOf<T> = [T] extends [never] ? never : T extends AnyObject ? Extract<keyof T, string> : never
+
+/** @see https://stackoverflow.com/a/50375286/10325032 */
+export type UnionToIntersection<Union> = (
+  Union extends any ? (argument: Union) => void : never
+) extends (argument: infer Intersection) => void
+? Intersection
+: never;