allow saving and loading carts

builtins.ts

@@ -9,6 +9,7 @@ import { addToContext, runCode } from "./runcode.ts";
 import { resetRepl } from "./repl.ts";
 import { COLOR } from "./colors.ts";
 import { getSheet, getCodeSheet } from "./sheet.ts";
+import { saveCart, loadCart } from "./cart.ts";
 
 let spritesheet: number | null = null;
 
@@ -58,6 +59,8 @@ const faux = {
 	},
 	log: console.log,
 	JSON: JSON,
+	save: saveCart,
+	load: loadCart,
 };
 
 for (const key in faux) {