ReadonlyDeep: Fix usage with properties defined with void (#782)

sindresorhus · Dec 7, 2023 · a919f93 · a919f93
1 parent ebb7a59
commit a919f93
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Showing 2 changed files with 14 additions and 2 deletions.
diff --git a/source/internal.d.ts b/source/internal.d.ts
@@ -68,9 +68,9 @@ export type Subtract<A extends number, B extends number> = BuildTuple<A> extends
 	: never;
 
 /**
-Matches any primitive, `Date`, or `RegExp` value.
+Matches any primitive, `void`, `Date`, or `RegExp` value.
 */
-export type BuiltIns = Primitive | Date | RegExp;
+export type BuiltIns = Primitive | void | Date | RegExp;
 
 /**
 Matches non-recursive types.

diff --git a/test-d/readonly-deep.ts b/test-d/readonly-deep.ts
@@ -110,3 +110,15 @@ expectType<NamespaceWithOverload>(readonlyData.namespaceWithOverload);
 expectType<string>(readonlyData.namespaceWithOverload(1));
 expectType<number>(readonlyData.namespaceWithOverload('foo', 1));
 expectType<boolean[]>(readonlyData.namespaceWithOverload.baz);
+
+// Test void
+type VoidType = {
+	foo: void;
+	bar: string | void;
+};
+type VoidTypeExpected = {
+	readonly foo: void;
+	readonly bar: string | void;
+};
+declare const voidType: ReadonlyDeep<VoidType>;
+expectType<VoidTypeExpected>(voidType);