Simplify ArrayBuffer to base64 conversion

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Uint8Array/toBase64

https://caniuse.com/mdn-javascript_builtins_uint8array_tobase64

diff --git a/index.html b/index.html
index 1caaa24ad57e5dc2159a5aae415c52367b1cc2d9..7753038386355e2656aeec1a13f9e2f0da51f0ce 100644 (file)
--- a/index.html
+++ b/index.html
@@ -195,7 +195,7 @@
         const hashPromises = [];
         for (const algo of ['SHA-256', 'SHA-384', 'SHA-512']) {
           hashPromises.push(crypto.subtle.digest(algo, buffer)
-            .then(hash => `${algo.replace('-', '').toLowerCase()}-${btoa(String.fromCharCode(...new Uint8Array(hash)))}`)
+            .then(hash => `${algo.replace('-', '').toLowerCase()}-${new Uint8Array(hash).toBase64()}`)
             .then(sri => cache[url][algo] = sri)
           );
         }