More specific web crypto condition

[aulneau]

Testing out using the noble libs in react native, and it seems the check for web crypto is not quite specific enough, typeof self === 'object' && 'crypto' in self can sometimes be true even when web crypto is not available.

Here is the diff that solved my problem:

diff --git a/node_modules/@noble/secp256k1/lib/esm/index.js b/node_modules/@noble/secp256k1/lib/esm/index.js
index ff76464..c5506a5 100644
--- a/node_modules/@noble/secp256k1/lib/esm/index.js
+++ b/node_modules/@noble/secp256k1/lib/esm/index.js
@@ -1046,7 +1046,7 @@ export const schnorr = {
 Point.BASE._setWindowSize(8);
 const crypto = {
     node: nodeCrypto,
-    web: typeof self === 'object' && 'crypto' in self ? self.crypto : undefined,
+    web: typeof self === 'object' && 'crypto' in self && 'subtle' in self.crypto ? self.crypto : undefined,
 };
 const TAGS = {
     challenge: 'BIP0340/challenge',
diff --git a/node_modules/@noble/secp256k1/lib/index.js b/node_modules/@noble/secp256k1/lib/index.js
index e207e74..18cd75d 100644
--- a/node_modules/@noble/secp256k1/lib/index.js
+++ b/node_modules/@noble/secp256k1/lib/index.js
@@ -1056,7 +1056,7 @@ exports.schnorr = {
 Point.BASE._setWindowSize(8);
 const crypto = {
     node: nodeCrypto,
-    web: typeof self === 'object' && 'crypto' in self ? self.crypto : undefined,
+    web: typeof self === 'object' && 'crypto' in self && 'subtle' in self.crypto ? self.crypto : undefined,
 };
 const TAGS = {
     challenge: 'BIP0340/challenge',

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