From 112dba1f3c2ae7cdb06253d64308790a86b1978d Mon Sep 17 00:00:00 2001
From: shayan javani <shayan.javani@gmail.com>
Date: Fri, 7 Oct 2022 10:19:39 +0330
Subject: also check for NaN result

---
 src/gleam_stdlib.mjs | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/gleam_stdlib.mjs b/src/gleam_stdlib.mjs
index 697662f..5ae80b9 100644
--- a/src/gleam_stdlib.mjs
+++ b/src/gleam_stdlib.mjs
@@ -99,7 +99,14 @@ export function int_from_base_string(string, base) {
   if (digits.slice(base).some((d) => string.toLowerCase().includes(d))) {
     return new Error(Nil);
   }
-  return new Ok(parseInt(string, base));
+
+  const result = parseInt(string, base);
+
+  if (isNaN(result)) {
+    return new Error(Nil);
+  }
+
+  return new Ok(result);
 }
 
 export function string_replace(string, target, substitute) {
-- 
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