@codecademy/gamut

Index: package/dist/utils/nullish.d.ts
===================================================================
--- package/dist/utils/nullish.d.ts
+++ package/dist/utils/nullish.d.ts
@@ -0,0 +1,10 @@
+/**
+ * True when `value` is `null` or `undefined`.
+ * Use instead of `value == null` when `eqeqeq` is enforced.
+ */
+export declare const isNullish: (value: unknown) => value is null | undefined;
+/**
+ * True when `value` is neither `null` nor `undefined`.
+ * Use instead of `value != null` when `eqeqeq` is enforced.
+ */
+export declare const isDefined: <T>(value: T | null | undefined) => value is T;