refactor: make Array.choose an extension

src/app.d.ts

@@ -8,6 +8,10 @@ declare global {
 		// interface PageState {}
 		// interface Platform {}
 	}
+
+	interface Array<T> {
+		choose(): T | undefined;
+	}
 }
 
 export {};

src/lib/choose.ts

@@ -0,0 +1,3 @@
+Array.prototype.choose = function <T>(this: T[]): T | undefined {
+	return this[Math.floor(Math.random() * this.length)];
+};

src/lib/utils.ts

@@ -2,8 +2,6 @@ export const secToMs = (sec: number): number => sec * 1000;
 
 export const minToMs = (min: number): number => secToMs(min * 60);
 
-export const choose = <T>(items: T[]): T => items[Math.floor(Math.random() * items.length)];
-
 export const base64 = {
 	encode: (input: string): string => btoa(input),
 	decode: (input: string): string => atob(input)

src/routes/+layout.ts

@@ -1,4 +1,5 @@
 import '../app.css';
+import '../lib/choose';
 import '../lib/deepfreeze';
 
 export const prerender = true;