Fix Set.fromKeys types with Map constructor in TS 5.0 (#1971)

package.json

@@ -122,7 +122,7 @@
     "transducers-js": "0.4.174",
     "tslint": "6.1.3",
     "tslint-config-prettier": "1.18.0",
-    "typescript": "^4.9",
+    "typescript": "5.0",
     "uglify-js": "3.11.1",
     "uglify-save-license": "0.4.1"
   }

type-definitions/immutable.d.ts

@@ -1713,6 +1713,8 @@ declare namespace Immutable {
      * `Set.fromKeys()` creates a new immutable Set containing the keys from
      * this Collection or JavaScript Object.
      */
+    function fromKeys<T>(iter: Collection.Keyed<T, unknown>): Set<T>;
+    // tslint:disable-next-line unified-signatures
     function fromKeys<T>(iter: Collection<T, unknown>): Set<T>;
     function fromKeys(obj: { [key: string]: unknown }): Set<string>;
 
@@ -1936,6 +1938,8 @@ declare namespace Immutable {
      * `OrderedSet.fromKeys()` creates a new immutable OrderedSet containing
      * the keys from this Collection or JavaScript Object.
      */
+    function fromKeys<T>(iter: Collection.Keyed<T, unknown>): OrderedSet<T>;
+    // tslint:disable-next-line unified-signatures
     function fromKeys<T>(iter: Collection<T, unknown>): OrderedSet<T>;
     function fromKeys(obj: { [key: string]: unknown }): OrderedSet<string>;
   }

type-definitions/ts-tests/ordered-set.ts

@@ -42,7 +42,7 @@ import { OrderedSet, Map } from 'immutable';
 {
   // .fromKeys
 
-  // $ExpectType OrderedSet<string>
+  // $ExpectType OrderedSet<number>
   OrderedSet.fromKeys(Map<number, string>());
 
   // $ExpectType OrderedSet<number>

type-definitions/ts-tests/set.ts

@@ -1,4 +1,4 @@
-import { Set, Map } from 'immutable';
+import { Set, Map, Collection } from 'immutable';
 
 {
   // #constructor
@@ -39,7 +39,7 @@ import { Set, Map } from 'immutable';
 {
   // .fromKeys
 
-  // $ExpectType Set<string>
+  // $ExpectType Set<number>
   Set.fromKeys(Map<number, string>());
 
   // $ExpectType Set<number>