feat(packages/stdlib): add function and array types

packages/stdlib/src/types/ts/array.ts

@@ -0,0 +1,4 @@
+/**
+ * A type that can be either a single value or an array of values
+ */
+export type Arrayable<T> = T | T[];

packages/stdlib/src/types/ts/function.ts

@@ -0,0 +1,9 @@
+/**
+ * Any function
+ */
+export type AnyFunction = (...args: any[]) => any;
+
+/**
+ * Void function
+ */
+export type VoidFunction = () => void;

packages/stdlib/src/types/ts/functions.ts

@@ -1,4 +0,0 @@
-/**
- * Any function
- */
-export type AnyFunction = (...args: any[]) => any;

packages/stdlib/src/types/ts/index.ts

@@ -1,2 +1,3 @@
 export * from './string';
-export * from './functions';
+export * from './function';
+export * from './array';