import WORKER_SHIM from './sandbox-worker.js?raw';
import { NEWLINE } from '$lib/constants';
/**
* CSP for the harness document, inherited by the blob worker. connect-src
* falls back to default-src, removing network egress for model and vendored
* code. 'unsafe-eval' is required by the worker's AsyncFunction constructor,
* 'unsafe-inline' by the inline script below, worker-src by the blob worker.
*/
const HARNESS_CSP = `default-src 'none'; script-src 'unsafe-inline' 'unsafe-eval'; worker-src blob:`;
/**
* Harness loaded as srcdoc into a sandboxed iframe (allow-scripts only).
* The opaque origin is the security boundary: no access to the app origin,
* its storage or its API. The harness spawns a worker so model code never
* runs on a main thread, which makes the parent timeout enforceable by
* removing the iframe. The prelude runs in the worker before the shim,
* exposing globals such as `nerdamer` to model code.
*/
export function buildSandboxHarness(preludeJs: string): string {
return ``;
}