Change HashMap to BTreeMap.

src/module/resolvers/file.rs

@@ -1,6 +1,6 @@
 use crate::stdlib::{
     boxed::Box,
-    collections::HashMap,
+    collections::BTreeMap,
     io::Error as IoError,
     path::{Path, PathBuf},
     string::String,
@@ -44,9 +44,9 @@ pub struct FileModuleResolver {
     cache_enabled: bool,
 
     #[cfg(not(feature = "sync"))]
-    cache: crate::stdlib::cell::RefCell<HashMap<PathBuf, Shared<Module>>>,
+    cache: crate::stdlib::cell::RefCell<BTreeMap<PathBuf, Shared<Module>>>,
     #[cfg(feature = "sync")]
-    cache: crate::stdlib::sync::RwLock<HashMap<PathBuf, Shared<Module>>>,
+    cache: crate::stdlib::sync::RwLock<BTreeMap<PathBuf, Shared<Module>>>,
 }
 
 impl Default for FileModuleResolver {

src/module/resolvers/stat.rs

@@ -1,4 +1,4 @@
-use crate::stdlib::{boxed::Box, collections::HashMap, ops::AddAssign, string::String};
+use crate::stdlib::{boxed::Box, collections::BTreeMap, ops::AddAssign, string::String};
 use crate::{Engine, EvalAltResult, Module, ModuleResolver, Position, Shared};
 
 /// A static [module][Module] resolution service that serves [modules][Module] added into it.
@@ -19,7 +19,7 @@ use crate::{Engine, EvalAltResult, Module, ModuleResolver, Position, Shared};
 /// engine.set_module_resolver(resolver);
 /// ```
 #[derive(Debug, Clone, Default)]
-pub struct StaticModuleResolver(HashMap<String, Shared<Module>>);
+pub struct StaticModuleResolver(BTreeMap<String, Shared<Module>>);
 
 impl StaticModuleResolver {
     /// Create a new [`StaticModuleResolver`].