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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
import { isContext, runInNewContext } from "node:vm";
import { assertEquals, assertThrows } from "@std/assert/mod.ts";
Deno.test({
name: "vm runInNewContext",
fn() {
const two = runInNewContext("1 + 1");
assertEquals(two, 2);
},
});
Deno.test({
name: "vm runInNewContext sandbox",
fn() {
assertThrows(() => runInNewContext("Deno"));
// deno-lint-ignore no-var
var a = 1;
assertThrows(() => runInNewContext("a + 1"));
runInNewContext("a = 2");
assertEquals(a, 1);
},
});
// https://github.com/webpack/webpack/blob/87660921808566ef3b8796f8df61bd79fc026108/lib/javascript/JavascriptParser.js#L4329
Deno.test({
name: "vm runInNewContext webpack magic comments",
fn() {
const webpackCommentRegExp = new RegExp(
/(^|\W)webpack[A-Z]{1,}[A-Za-z]{1,}:/,
);
const comments = [
'webpackChunkName: "test"',
'webpackMode: "lazy"',
"webpackPrefetch: true",
"webpackPreload: true",
"webpackProvidedExports: true",
'webpackChunkLoading: "require"',
'webpackExports: ["default", "named"]',
];
for (const comment of comments) {
const result = webpackCommentRegExp.test(comment);
assertEquals(result, true);
const [[key, _value]]: [string, string][] = Object.entries(
runInNewContext(`(function(){return {${comment}};})()`),
);
const expectedKey = comment.split(":")[0].trim();
assertEquals(key, expectedKey);
}
},
});
Deno.test({
name: "vm isContext",
fn() {
// Currently we do not expose VM contexts so this is always false.
const obj = {};
assertEquals(isContext(obj), false);
assertEquals(isContext(globalThis), false);
const sandbox = runInNewContext("{}");
assertEquals(isContext(sandbox), false);
},
});
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