Remove an assert from the code which should not crash the library

CHANGELOG.md

@@ -0,0 +1,13 @@
+## Unreleased
+- Fix bug where the library will crash if asked to load Time Zone information
+  from a nonexistant directory.
+
+## v1.0.0 - 2025-09-21
+- Initial release
+- Exposes parser as a module
+- Adds support for leap seconds
+- Explicit loading of time zone database into an opaque record
+- Completely overhauled API
+
+## v0.1.0 - 2025-09-17
+- Initial proof of concept.

src/tzif/database.gleam

@@ -48,7 +48,9 @@ pub fn load_from_os() -> Result(TzDatabase, Nil) {
 pub fn load_from_path(path: String) -> Result(TzDatabase, Nil) {
   let parts = filepath.split(path)
   let drop_number = list.length(parts)
-  let assert Ok(filenames) = simplifile.get_files(path)
+  use filenames <- result.try(
+    simplifile.get_files(path) |> result.replace_error(Nil),
+  )
 
   let data =
     filenames