Add nodejs v14 compat, copied from hashes

.github/workflows/nodejs.yml

@@ -9,6 +9,8 @@ jobs:
     strategy:
       matrix:
         node:
+          - 14
+          - 16
           - 18
           - 20
     steps:

src/cryptoNode.ts

@@ -1,7 +1,11 @@
-// We use WebCrypto aka globalThis.crypto, which exists in browsers and node.js 16+.
+// We prefer WebCrypto aka globalThis.crypto, which exists in node.js 16+.
+// Falls back to Node.js built-in crypto for Node.js <=v14
 // See utils.ts for details.
-// The file will throw on node.js 14 and earlier.
 // @ts-ignore
 import * as nc from 'node:crypto';
 export const crypto =
-  nc && typeof nc === 'object' && 'webcrypto' in nc ? (nc.webcrypto as any) : undefined;
+  nc && typeof nc === 'object' && 'webcrypto' in nc
+    ? (nc.webcrypto as any)
+    : nc && typeof nc === 'object' && 'randomBytes' in nc
+      ? nc
+      : undefined;

src/webcrypto.ts

@@ -14,8 +14,13 @@ import { AsyncCipher, Cipher, concatBytes } from './utils.js';
  * Secure PRNG. Uses `crypto.getRandomValues`, which defers to OS.
  */
 export function randomBytes(bytesLength = 32): Uint8Array {
-  if (crypto && typeof crypto.getRandomValues === 'function')
+  if (crypto && typeof crypto.getRandomValues === 'function') {
     return crypto.getRandomValues(new Uint8Array(bytesLength));
+  }
+  // Legacy Node.js compatibility
+  if (crypto && typeof crypto.randomBytes === 'function') {
+    return crypto.randomBytes(bytesLength);
+  }
   throw new Error('crypto.getRandomValues must be defined');
 }