From: Chris Duncan <chris@zoso.dev>
Date: Fri, 6 Dec 2024 12:42:39 +0000 (-0800)
Subject: Clarify failure message when testing existence.
X-Git-Url: https://zoso.dev/?a=commitdiff_plain;h=d2523812587e6f4c828958692ab921bdb95c9a37;p=libnemo.git

Clarify failure message when testing existence.
---

diff --git a/GLOBALS.mjs b/GLOBALS.mjs
index fee5333..0ed94e8 100644
--- a/GLOBALS.mjs
+++ b/GLOBALS.mjs
@@ -60,7 +60,8 @@ export const assert = {
 	},
 	exists: (a) => {
 		if (a == null) {
-			throw new Error(`argument is ${typeof a}`)
+			const type = /^[aeiou]/i.test(typeof a) ? `an ${typeof a}` : `a ${typeof a}`
+			throw new Error(`argument exists and is ${type}`)
 		}
 		return a != null
 	},