diff --git a/core/engine/src/builtins/builder.rs b/core/engine/src/builtins/builder.rs
index c586ed94a10..4533190da65 100644
--- a/core/engine/src/builtins/builder.rs
+++ b/core/engine/src/builtins/builder.rs
@@ -1,4 +1,3 @@
-
 use crate::{
     js_string,
     native_function::{NativeFunctionObject, NativeFunctionPointer},
diff --git a/core/engine/src/builtins/iterable/mod.rs b/core/engine/src/builtins/iterable/mod.rs
index 10319b98d7c..b2de198516f 100644
--- a/core/engine/src/builtins/iterable/mod.rs
+++ b/core/engine/src/builtins/iterable/mod.rs
@@ -1,7 +1,14 @@
 //! Boa's implementation of ECMAScript's `IteratorRecord` and iterator prototype objects.
 
 use crate::{
-    builtins::{BuiltInBuilder, IntrinsicObject}, context::intrinsics::Intrinsics, error::JsNativeError, js_string, object::JsObject, realm::Realm, symbol::JsSymbol, Context, JsResult, JsValue
+    builtins::{BuiltInBuilder, IntrinsicObject},
+    context::intrinsics::Intrinsics,
+    error::JsNativeError,
+    js_string,
+    object::JsObject,
+    realm::Realm,
+    symbol::JsSymbol,
+    Context, JsResult, JsValue,
 };
 use boa_gc::{Finalize, Trace};
 use boa_profiler::Profiler;
diff --git a/core/engine/src/builtins/regexp/mod.rs b/core/engine/src/builtins/regexp/mod.rs
index fc3e1bada60..9fb6a1f7c29 100644
--- a/core/engine/src/builtins/regexp/mod.rs
+++ b/core/engine/src/builtins/regexp/mod.rs
@@ -1262,7 +1262,9 @@ impl RegExp {
                 // 3. If matchStr is the empty String, then
                 if match_str.is_empty() {
                     // a. Let thisIndex be ℝ(? ToLength(? Get(rx, "lastIndex"))).
-                    let this_index = rx.get(js_string!("lastIndex"), context)?.to_length(context)?;
+                    let this_index = rx
+                        .get(js_string!("lastIndex"), context)?
+                        .to_length(context)?;
 
                     // b. Let nextIndex be AdvanceStringIndex(S, thisIndex, fullUnicode).
                     let next_index = advance_string_index(&arg_str, this_index, full_unicode);
@@ -1313,10 +1315,14 @@ impl RegExp {
         })?;
 
         // 3. Let pattern be ? ToString(? Get(R, "source")).
-        let pattern = regexp.get(js_string!("source"), context)?.to_string(context)?;
+        let pattern = regexp
+            .get(js_string!("source"), context)?
+            .to_string(context)?;
 
         // 4. Let flags be ? ToString(? Get(R, "flags")).
-        let flags = regexp.get(js_string!("flags"), context)?.to_string(context)?;
+        let flags = regexp
+            .get(js_string!("flags"), context)?
+            .to_string(context)?;
 
         // 5. Let result be the string-concatenation of "/", pattern, "/", and flags.
         // 6. Return result.
@@ -1352,7 +1358,9 @@ impl RegExp {
         let c = regexp.species_constructor(StandardConstructors::regexp, context)?;
 
         // 5. Let flags be ? ToString(? Get(R, "flags")).
-        let flags = regexp.get(js_string!("flags"), context)?.to_string(context)?;
+        let flags = regexp
+            .get(js_string!("flags"), context)?
+            .to_string(context)?;
 
         // 6. Let matcher be ? Construct(C, « R, flags »).
         let matcher = c.construct(&[this.clone(), flags.clone().into()], Some(&c), context)?;
@@ -1487,7 +1495,9 @@ impl RegExp {
             //    2. If matchStr is the empty String, then
             if match_str.is_empty() {
                 // a. Let thisIndex be ℝ(? ToLength(? Get(rx, "lastIndex"))).
-                let this_index = rx.get(js_string!("lastIndex"), context)?.to_length(context)?;
+                let this_index = rx
+                    .get(js_string!("lastIndex"), context)?
+                    .to_length(context)?;
 
                 // b. Let nextIndex be AdvanceStringIndex(S, thisIndex, fullUnicode).
                 let next_index = advance_string_index(&s, this_index, full_unicode);
diff --git a/core/engine/src/object/builtins/jsmap.rs b/core/engine/src/object/builtins/jsmap.rs
index 6a4e286b3ca..fa27c52dd8d 100644
--- a/core/engine/src/object/builtins/jsmap.rs
+++ b/core/engine/src/object/builtins/jsmap.rs
@@ -314,7 +314,7 @@ impl JsMap {
     /// ```
     /// # use boa_engine::{
     /// #    object::builtins::JsMap,
-    /// #    Context, JsValue, JsResult, js_str
+    /// #    Context, JsValue, JsResult, js_string
     /// # };
     /// # fn main() -> JsResult<()> {
     /// # let context = &mut Context::default();
diff --git a/core/engine/src/object/builtins/jsproxy.rs b/core/engine/src/object/builtins/jsproxy.rs
index 00432a40555..125723f71cb 100644
--- a/core/engine/src/object/builtins/jsproxy.rs
+++ b/core/engine/src/object/builtins/jsproxy.rs
@@ -1,7 +1,12 @@
 //! A Rust API wrapper for the `Proxy` Builtin ECMAScript Object
 use super::JsFunction;
 use crate::{
-    builtins::Proxy, js_string, native_function::{NativeFunction, NativeFunctionPointer}, object::{FunctionObjectBuilder, JsObject}, value::TryFromJs, Context, JsNativeError, JsResult, JsValue
+    builtins::Proxy,
+    js_string,
+    native_function::{NativeFunction, NativeFunctionPointer},
+    object::{FunctionObjectBuilder, JsObject},
+    value::TryFromJs,
+    Context, JsNativeError, JsResult, JsValue,
 };
 use boa_gc::{Finalize, Trace};
 
diff --git a/core/engine/src/value/display.rs b/core/engine/src/value/display.rs
index 9c02b59502a..9320bb5dd67 100644
--- a/core/engine/src/value/display.rs
+++ b/core/engine/src/value/display.rs
@@ -3,7 +3,10 @@ use crate::{
     builtins::{
         error::ErrorObject, map::ordered_map::OrderedMap, promise::PromiseState,
         set::ordered_set::OrderedSet, Array, Promise,
-    }, js_string, property::PropertyDescriptor, JsError, JsString
+    },
+    js_string,
+    property::PropertyDescriptor,
+    JsError, JsString,
 };
 use std::borrow::Cow;