From 57c1d9e612fa5ffbd3ae0b7c43fc1e20ec748030 Mon Sep 17 00:00:00 2001
From: Paul Miller <paul@paulmillr.com>
Date: Tue, 3 Sep 2024 01:26:52 +0000
Subject: [PATCH] webcrypto: detect subtle, copy from secp256k1

---
 index.js | 2 +-
 index.ts | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/index.js b/index.js
index ab45032..3d27c39 100644
--- a/index.js
+++ b/index.js
@@ -305,7 +305,7 @@ const _verify = (sig, msg, pub, opts = dvo) => {
 const verifyAsync = async (s, m, p, opts = dvo) => hashFinish(true, _verify(s, m, p, opts));
 const verify = (s, m, p, opts = dvo) => hashFinish(false, _verify(s, m, p, opts));
 const cr = () => // We support: 1) browsers 2) node.js 19+
- typeof globalThis === 'object' && 'crypto' in globalThis ? globalThis.crypto : undefined;
+ typeof globalThis === 'object' && 'crypto' in globalThis && 'subtle' in globalThis.crypto ? globalThis.crypto : undefined;
 const etc = {
     bytesToHex: b2h, hexToBytes: h2b, concatBytes: concatB,
     mod, invert,
diff --git a/index.ts b/index.ts
index 52cc620..0515e67 100644
--- a/index.ts
+++ b/index.ts
@@ -272,7 +272,7 @@ const verify = (s: Hex, m: Hex, p: Hex, opts = dvo) =>
   hashFinish(false, _verify(s, m, p, opts));
 declare const globalThis: Record<string, any> | undefined; // Typescript symbol present in browsers
 const cr = () => // We support: 1) browsers 2) node.js 19+
-  typeof globalThis === 'object' && 'crypto' in globalThis ? globalThis.crypto : undefined;
+  typeof globalThis === 'object' && 'crypto' in globalThis && 'subtle' in globalThis.crypto ? globalThis.crypto : undefined;
 const etc = {
   bytesToHex: b2h, hexToBytes: h2b, concatBytes: concatB,
   mod, invert,