use to-buffer

Author: ChALkeR

hash.js

@@ -1,10 +1,7 @@
 'use strict';
 
 var Buffer = require('safe-buffer').Buffer;
-
-var useArrayBuffer = typeof ArrayBuffer !== 'undefined'
-  && typeof Uint8Array !== 'undefined'
-  && ArrayBuffer.isView;
+var toBuffer = require('to-buffer');
 
 // prototype class for hash functions
 function Hash(blockSize, finalSize) {
@@ -24,29 +21,9 @@ Hash.prototype.update = function (data, enc) {
 	} else if (typeof data === 'string') {
 		enc = enc || 'utf8';
 		data = Buffer.from(data, enc);
-	} else if (useArrayBuffer && ArrayBuffer.isView(data)) {
-		// Convert all TypedArray and DataView instances to single-byte-wide Uint8Array views
-		var oldSize = data.byteLength;
-		data = new Uint8Array(data.buffer, data.byteOffset, data.byteLength);
-
-		if (!(data.byteLength === oldSize && data.byteLength === data.length)) {
-			throw new Error('Unexpected: broken Uint8Array');
-		}
 	} else {
-		if (!data || typeof data !== 'object' || typeof data.length !== 'number') {
-			throw new TypeError('Not an array-like');
-		}
-
-		// non-negative 32-bit integer
-		if ((data.length >>> 0) !== data.length) {
-			throw new RangeError('Invalid length');
-		}
-
-		for (var j = 0; j < data.length; j++) {
-			if ((data[j] & 255) !== data[j]) {
-				throw new TypeError('Not a byte array');
-			}
-		}
+		enc = enc || 'utf8';
+		data = toBuffer(data, enc);
 	}
 
 	var block = this._block;

package.json

@@ -9,7 +9,8 @@
   },
   "dependencies": {
     "inherits": "^2.0.4",
-    "safe-buffer": "^5.2.1"
+    "safe-buffer": "^5.2.1",
+    "to-buffer": "^1.2.0"
   },
   "devDependencies": {
     "@ljharb/eslint-config": "^21.1.1",