fix(ts_web): Ensure sha256FromBuffer uses correct ArrayBuffer slice for Uint8Array inputs and add local project config files

ts_web/index.ts

@@ -60,7 +60,19 @@ export const sha256FromStringSync = (stringArg: string): string => {
  */
 export const sha256FromBuffer = async (bufferArg: ArrayBuffer | Uint8Array): Promise<string> => {
   if (isCryptoSubtleAvailable()) {
-    const hash = await crypto.subtle.digest("SHA-256", bufferArg);
+    // Ensure we pass an ArrayBuffer to satisfy BufferSource typing
+    let inputBuffer: ArrayBuffer;
+    if (bufferArg instanceof Uint8Array) {
+      const view = bufferArg;
+      inputBuffer = view.buffer.slice(
+        view.byteOffset,
+        view.byteOffset + view.byteLength
+      ) as ArrayBuffer;
+    } else {
+      inputBuffer = bufferArg;
+    }
+
+    const hash = await crypto.subtle.digest("SHA-256", inputBuffer);
     const result = hex(hash);
     return result;
   } else {
@@ -101,4 +113,4 @@ export const sha256FromFile = async (filePath: string): Promise<string> => {
  */
 export const md5FromString = async (stringToHash: string): Promise<string> => {
   throw new Error('md5FromString is not supported in browser environment. Web Crypto API does not support MD5.');
-};
+};