refactor(experimental): make the polyfill set the crypto global in Node

Author: steveluscher

packages/webcrypto-ed25519-polyfill/package.json

@@ -62,7 +62,8 @@
         "node": ">=17.4"
     },
     "dependencies": {
-        "@noble/ed25519": "^2.0.0"
+        "@noble/ed25519": "^2.0.0",
+        "crypto-impl": "workspace:*"
     },
     "devDependencies": {
         "@solana/eslint-config-solana": "^1.0.2",

packages/webcrypto-ed25519-polyfill/src/index.ts

@@ -1,3 +1,5 @@
+import cryptoImpl from 'crypto-impl';
+
 import {
     exportKeyPolyfill,
     generateKeyPolyfill,
@@ -7,6 +9,14 @@ import {
     verifyPolyfill,
 } from './secrets';
 
+if (__NODEJS__) {
+    /**
+     * Node only sets the `crypto` global variable when run with `--experimental-global-webcrypto`.
+     * Let's set it unconditionally here.
+     */
+    globalThis.crypto ||= cryptoImpl;
+}
+
 if (!__BROWSER__ || globalThis.isSecureContext) {
     /**
      * Create `crypto.subtle` if it doesn't exist.