remove base64-arraybuffer

Andre Bluehs · Andre Bluehs · commit 86d47224d1c0 · 2025-05-29T16:41:39.000+01:00
diff --git a/package-lock.json b/package-lock.json
diff --git a/package.json b/package.json
@@ -13,7 +13,6 @@
     "@hpke/chacha20poly1305": "^1.2.7",
     "@hpke/core": "^1.2.7",
     "@hpke/dhkem-x25519": "^1.2.7",
-    "base64-arraybuffer": "^1.0.2",
     "itty-router": "^5.0.17"
   },
   "devDependencies": {
diff --git a/src/matched_data.ts b/src/matched_data.ts
@@ -1,7 +1,6 @@
 import { CipherSuite, HkdfSha256 } from "@hpke/core";
 import { DhkemX25519HkdfSha256 } from "@hpke/dhkem-x25519";
 import { Chacha20Poly1305 } from "@hpke/chacha20poly1305";
-import { decode as b64decode } from "base64-arraybuffer";
 import { TransformNewlineStream } from "./transform_newline_stream";
 
 /**
@@ -70,3 +69,15 @@ function decodebin(enc: ArrayBuffer) {
       };
   }
 }
+
+function b64decode(base64: string) {
+  const binaryString = atob(base64);
+  const length = binaryString.length;
+  const bytes = new Uint8Array(length);
+
+  for (let i = 0; i < length; i++) {
+    bytes[i] = binaryString.charCodeAt(i);
+  }
+
+  return bytes.buffer;
+}
