[types] improve types

Author: ljharb

index.d.ts

@@ -1,3 +1,5 @@
+import type { TypedArray } from 'is-typed-array';
+
 /**
  * Determines the type of the given collection, or returns false.
  *
@@ -19,7 +21,7 @@ declare function whichTypedArray(value: whichTypedArray.TypedArray): whichTypedA
 declare function whichTypedArray(value: unknown): false | null;
 
 declare namespace whichTypedArray {
-  type TypedArrayName =
+  export type TypedArrayName =
     | 'Int8Array'
     | 'Uint8Array'
     | 'Uint8ClampedArray'
@@ -32,20 +34,9 @@ declare namespace whichTypedArray {
     | 'BigInt64Array'
     | 'BigUint64Array';
 
-  type TypedArray =
-    | Int8Array
-    | Uint8Array
-    | Uint8ClampedArray
-    | Int16Array
-    | Uint16Array
-    | Int32Array
-    | Uint32Array
-    | Float32Array
-    | Float64Array
-    | BigInt64Array
-    | BigUint64Array;
+  export type { TypedArray };
 
-  type TypedArrayConstructor =
+  export type TypedArrayConstructor =
     | Int8ArrayConstructor
     | Uint8ArrayConstructor
     | Uint8ClampedArrayConstructor