From: Chris Duncan <chris@codecow.com>
Date: Mon, 18 May 2026 17:08:17 +0000 (-0700)
Subject: Eliminate slow modulo operator and unshift function.
X-Git-Url: https://git.codecow.com/?a=commitdiff_plain;h=d25a281513dac04a31762160d862c3844a71b441;p=libnemo.git

Eliminate slow modulo operator and unshift function.
---

diff --git a/src/lib/convert.ts b/src/lib/convert.ts
index 6362793..801f96e 100644
--- a/src/lib/convert.ts
+++ b/src/lib/convert.ts
@@ -258,15 +258,14 @@ export class hex {
 		if (typeof padding !== 'number') {
 			throw new TypeError('Invalid padding when converting hex to array', { cause: padding })
 		}
-		if (hex.length % 2 === 1) hex = `0${hex}`
+		if ((hex.length & 1) !== 0) hex = `0${hex}`
 		const hexArray = hex.match(/.{2}/g)
 		if (hexArray == null) {
 			throw new RangeError('Invalid hex string when converting to array', { cause: hexArray })
 		}
-		for (let i = hexArray.length; i < padding; i++) {
-			hexArray.unshift('0')
-		}
-		return hexArray.map(v => parseInt(v, 16))
+		const diff = padding - hexArray.length
+		const pad = new Array(diff > 0 ? diff : 0).fill(0)
+		return pad.concat(hexArray.map(v => parseInt(v, 16)))
 	}
 
 	/**