changed validation method for digits

1 files changed, 38 insertions, 39 deletions

diff --git a/src/gleam_stdlib.mjs b/src/gleam_stdlib.mjs
index c3ae533..df0f788 100644
--- a/src/gleam_stdlib.mjs
+++ b/src/gleam_stdlib.mjs
@@ -57,47 +57,46 @@ export function int_to_base_string(int, base) {
   return int.toString(base).toUpperCase();
 }
 
-const digits = [
-  "0",
-  "1",
-  "2",
-  "3",
-  "4",
-  "5",
-  "6",
-  "7",
-  "8",
-  "9",
-  "a",
-  "b",
-  "c",
-  "d",
-  "e",
-  "f",
-  "g",
-  "h",
-  "i",
-  "j",
-  "k",
-  "l",
-  "m",
-  "n",
-  "o",
-  "p",
-  "q",
-  "r",
-  "s",
-  "t",
-  "u",
-  "v",
-  "w",
-  "x",
-  "y",
-  "z",
-];
+const int_base_patterns = {
+  2:  /[^0-1]/,
+  3:  /[^0-2]/,
+  4:  /[^0-3]/,
+  5:  /[^0-4]/,
+  6:  /[^0-5]/,
+  7:  /[^0-6]/,
+  8:  /[^0-7]/,
+  9:  /[^0-8]/,
+  10: /[^0-9]/,
+  11: /[^0-9a]/,
+  12: /[^0-9a-b]/,
+  13: /[^0-9a-c]/,
+  14: /[^0-9a-d]/,
+  15: /[^0-9a-e]/,
+  16: /[^0-9a-f]/,
+  17: /[^0-9a-g]/,
+  18: /[^0-9a-h]/,
+  19: /[^0-9a-i]/,
+  20: /[^0-9a-j]/,
+  21: /[^0-9a-k]/,
+  22: /[^0-9a-l]/,
+  23: /[^0-9a-m]/,
+  24: /[^0-9a-n]/,
+  25: /[^0-9a-o]/,
+  26: /[^0-9a-p]/,
+  27: /[^0-9a-q]/,
+  28: /[^0-9a-r]/,
+  29: /[^0-9a-s]/,
+  30: /[^0-9a-t]/,
+  31: /[^0-9a-u]/,
+  32: /[^0-9a-v]/,
+  33: /[^0-9a-w]/,
+  34: /[^0-9a-x]/,
+  35: /[^0-9a-y]/,
+  36: /[^0-9a-z]/,
+}
 
 export function int_from_base_string(string, base) {
-  if (digits.slice(base).some((d) => string.toLowerCase().includes(d))) {
+  if (int_base_patterns[base].test(string.toLowerCase())) {
     return new Error(Nil);
   }