From ab7903937094aeef05a101f33d59dd041de6cddb Mon Sep 17 00:00:00 2001
From: Anderson <anderson@jdiaz.com>
Date: Fri, 19 May 2023 19:45:44 -0400
Subject: [PATCH] feat: parse numeric strings as BigInt on supported systems

---
 src/util.ts | 19 +++++++++++++++++--
 1 file changed, 17 insertions(+), 2 deletions(-)

diff --git a/src/util.ts b/src/util.ts
index 09ed748..51c2883 100644
--- a/src/util.ts
+++ b/src/util.ts
@@ -102,8 +102,23 @@ export const fromAlphabet = (
 
 const safeToParseNumberRegExp = /^\+?\d+$/
 
-export const safeParseInt10 = (str: string) =>
-  safeToParseNumberRegExp.test(str) ? Number.parseInt(str, 10) : Number.NaN
+export const safeParseInt10 = (str: string) => {
+  if (!safeToParseNumberRegExp.test(str)) {
+    return Number.NaN
+  }
+
+  const int10 = Number.parseInt(str, 10)
+
+  if (Number.isSafeInteger(int10)) {
+    return int10
+  }
+
+  throwIfBigIntNotAvailable(
+    'Unable to encode the provided BigInt string without loss of information due to lack of support for BigInt type in the current environment',
+  )
+
+  return BigInt(str)
+}
 
 export const splitAtIntervalAndMap = <T>(
   str: string,