Use new JavaScript API

CHANGELOG.md

···
 # Changelog
 
+## Unreleased
+
+- Updated the JavaScript FFI code to use the new API.
+
+- `pearl` now requires Gleam v1.13 or higher.
+
 ## v2.1.0 - 2025-09-01
 
 - Improved the performance of lexing comments and escape sequences.

gleam.toml

···
 name = "pearl"
 version = "2.1.0"
+gleam = ">= 1.13.0"
 
 description = "An Erlang lexer and syntax highlighter for Gleam!"
 licences = ["Apache-2.0"]

src/pearl_ffi.mjs

···
-import { Ok, Error } from "./gleam.mjs";
+import { Result$Ok, Result$Error } from "./gleam.mjs";
 
 export function strip_prefix(string, prefix) {
   if (string.startsWith(prefix)) {
-    return new Ok(string.slice(prefix.length));
+    return Result$Ok(string.slice(prefix.length));
   } else {
-    return new Error(undefined);
+    return Result$Error(undefined);
   }
 }