From: Chris Duncan <chris@zoso.dev>
Date: Tue, 26 Nov 2024 22:00:08 +0000 (-0800)
Subject: Add type guards to function. Spaces.
X-Git-Url: https://zoso.dev/?a=commitdiff_plain;h=d2d83b0a66b046675d82505bb7521a2891049fe0;p=libnemo.git

Add type guards to function. Spaces.
---

diff --git a/src/lib/blake2b.ts b/src/lib/blake2b.ts
index 41237d6..3f040ec 100644
--- a/src/lib/blake2b.ts
+++ b/src/lib/blake2b.ts
@@ -283,9 +283,12 @@ function hexSlice (buf: Uint8Array) {
 	return str
 }
 
-function toHex (n) {
-	if (n < 16) return '0' + n.toString(16)
-	return n.toString(16)
+function toHex (n: number) {
+	if (typeof n !== 'number')
+		 throw new TypeError(`expected number to convert to hex, received convert ${typeof n}`)
+	if (n < 0 || n > 255)
+		throw new RangeError(`expected byte value 0-255, received ${n}`)
+	return n.toString(16).padStart(2, '0')
 }
 
 var Proto = Blake2b
@@ -305,15 +308,15 @@ export default function createHash (outlen: number, key?: Uint8Array, salt?: Uin
 				throw new RangeError('key must be at most ' + KEYBYTES_MAX + ', was given ' + key.length)
 		}
 		if (salt != null) {
-			if(!(salt instanceof Uint8Array))
+			if (!(salt instanceof Uint8Array))
 				throw new TypeError('salt must be Uint8Array or Buffer')
 			if (salt.length !== SALTBYTES)
 				throw new RangeError('salt must be exactly ' + SALTBYTES + ', was given ' + salt.length)
 		}
 		if (personal != null) {
-			if(!(personal instanceof Uint8Array))
-				throw new TypeError( 'personal must be Uint8Array or Buffer')
-			if(personal.length !== PERSONALBYTES)
+			if (!(personal instanceof Uint8Array))
+				throw new TypeError('personal must be Uint8Array or Buffer')
+			if (personal.length !== PERSONALBYTES)
 				throw new RangeError('personal must be exactly ' + PERSONALBYTES + ', was given ' + personal.length)
 		}
 	}