diff --git a/crates/oxc_ecmascript/src/lib.rs b/crates/oxc_ecmascript/src/lib.rs
index eda232334fe4f..0a259fe1b0b77 100644
--- a/crates/oxc_ecmascript/src/lib.rs
+++ b/crates/oxc_ecmascript/src/lib.rs
@@ -11,6 +11,7 @@ mod string_char_at;
 mod string_index_of;
 mod string_last_index_of;
 mod string_to_big_int;
+mod string_to_number;
 mod to_big_int;
 mod to_boolean;
 mod to_int_32;
@@ -28,6 +29,6 @@ pub use self::{
     private_bound_identifiers::PrivateBoundIdentifiers, prop_name::PropName,
     string_char_at::StringCharAt, string_index_of::StringIndexOf,
     string_last_index_of::StringLastIndexOf, string_to_big_int::StringToBigInt,
-    to_big_int::ToBigInt, to_boolean::ToBoolean, to_int_32::ToInt32, to_number::ToNumber,
-    to_string::ToJsString,
+    string_to_number::StringToNumber, to_big_int::ToBigInt, to_boolean::ToBoolean,
+    to_int_32::ToInt32, to_number::ToNumber, to_string::ToJsString,
 };
diff --git a/crates/oxc_ecmascript/src/string_to_number.rs b/crates/oxc_ecmascript/src/string_to_number.rs
new file mode 100644
index 0000000000000..5af9ddc3831a7
--- /dev/null
+++ b/crates/oxc_ecmascript/src/string_to_number.rs
@@ -0,0 +1,9 @@
+pub trait StringToNumber {
+    fn string_to_number(&self) -> f64;
+}
+
+impl StringToNumber for &str {
+    fn string_to_number(&self) -> f64 {
+        self.parse::<f64>().unwrap_or(f64::NAN)
+    }
+}
diff --git a/crates/oxc_ecmascript/src/to_number.rs b/crates/oxc_ecmascript/src/to_number.rs
index 8aeacd2555643..6aa905a404f92 100644
--- a/crates/oxc_ecmascript/src/to_number.rs
+++ b/crates/oxc_ecmascript/src/to_number.rs
@@ -25,9 +25,9 @@ impl<'a> ToNumber<'a> for Expression<'a> {
                 "NaN" | "undefined" => Some(f64::NAN),
                 _ => None,
             },
-            // TODO: StringToNumber
-            Expression::StringLiteral(string_literal) => {
-                string_literal.value.parse::<f64>().map_or(Some(f64::NAN), Some)
+            Expression::StringLiteral(lit) => {
+                use crate::StringToNumber;
+                Some(lit.value.as_str().string_to_number())
             }
             _ => None,
         }