Intereactive JavaScript REPL
Deno Sandboxes provide a sandboxed environment for evaluating JavaScript code. This is useful for evaluating code that is not trusted or for testing code that is not safe to run in the main runtime.
The sandbox.repl() method can be used to provide an interactive JavaScript
REPL in a sandbox.
This example shows how to start a JavaScript REPL in a sandbox and execute code interactively.
import { Sandbox } from "@deno/sandbox";
await using sandbox = await Sandbox.create();
// Start a JavaScript REPL
const repl = await sandbox.repl();
// Execute code interactively, maintaining state
await repl.eval("const x = 42;");
await repl.eval("const y = 8;");
const result = await repl.eval("x + y");
console.log("result:", result); // 50
For more information about Sandboxes, see the Sandboxes documentation.