Clean up more clippy.

src/module/resolvers/collection.rs

@@ -42,7 +42,7 @@ impl ModuleResolversCollection {
     /// ```
     #[inline(always)]
     #[must_use]
-    pub const fn new() -> Self {
+    pub fn new() -> Self {
         Self(Vec::new())
     }
     /// Append a [module resolver][ModuleResolver] to the end.

src/module/resolvers/dummy.rs

@@ -31,6 +31,7 @@ impl DummyModuleResolver {
     /// engine.set_module_resolver(resolver);
     /// ```
     #[inline(always)]
+    #[must_use]
     pub const fn new() -> Self {
         Self
     }

src/module/resolvers/file.rs

@@ -244,10 +244,10 @@ impl FileModuleResolver {
 
         let cache = locked_read(&self.cache);
 
-        if !cache.is_empty() {
-            cache.contains_key(path.as_ref())
-        } else {
+        if cache.is_empty() {
             false
+        } else {
+            cache.contains_key(path.as_ref())
         }
     }
     /// Empty the internal cache.
@@ -277,7 +277,7 @@ impl FileModuleResolver {
             file_path = self
                 .base_path
                 .clone()
-                .or_else(|| source_path.map(|p| p.into()))
+                .or_else(|| source_path.map(Into::into))
                 .unwrap_or_default();
             file_path.push(path);
         } else {

src/module/resolvers/stat.rs

@@ -66,10 +66,10 @@ impl StaticModuleResolver {
     #[inline(always)]
     #[must_use]
     pub fn contains_path(&self, path: &str) -> bool {
-        if !self.0.is_empty() {
-            self.0.contains_key(path)
-        } else {
+        if self.0.is_empty() {
             false
+        } else {
+            self.0.contains_key(path)
         }
     }
     /// Get an iterator of all the [modules][Module].
@@ -85,7 +85,7 @@ impl StaticModuleResolver {
     /// Get an iterator of all the [module][Module] paths.
     #[inline]
     pub fn paths(&self) -> impl Iterator<Item = &str> {
-        self.0.keys().map(|s| s.as_str())
+        self.0.keys().map(SmartString::as_str)
     }
     /// Get an iterator of all the [modules][Module].
     #[inline(always)]
@@ -100,6 +100,7 @@ impl StaticModuleResolver {
     }
     /// Is this [`StaticModuleResolver`] empty?
     #[inline(always)]
+    #[must_use]
     pub fn is_empty(&self) -> bool {
         self.0.is_empty()
     }