Fix node 18

Author: aomarks

src/test/cache-github-fake.test.ts

@@ -9,6 +9,7 @@ import * as pathlib from 'path';
 import * as assert from 'uvu/assert';
 import * as crypto from 'crypto';
 import * as selfsigned from 'selfsigned';
+import * as x509 from '@peculiar/x509';
 import {suite} from 'uvu';
 import {fileURLToPath} from 'url';
 import {ExitResult, WireitTestRig} from './util/test-rig.js';
@@ -23,6 +24,13 @@ const __filename = fileURLToPath(import.meta.url);
 const __dirname = pathlib.dirname(__filename);
 const repoRoot = pathlib.resolve(__dirname, '..', '..');
 
+if (x509.cryptoProvider.size === 0) {
+  // On Node 18, the x509 library which selfsigned uses fails to find a crypto
+  // provider (not sure why). This forces the Node-native one in there.
+  // TODO(aomarks) Do we really need to use TLS for this test?
+  x509.cryptoProvider.set(crypto.webcrypto);
+}
+
 const SELF_SIGNED_CERT = await selfsigned.generate(
   [{name: 'commonName', value: 'localhost'}],
   // More recent versions of TLS require a larger minimum key size than the