diff --git a/src/data_types/array.rs b/src/data_types/array.rs
index c8eca42..7b4eb81 100644
--- a/src/data_types/array.rs
+++ b/src/data_types/array.rs
@@ -1,6 +1,22 @@
-use super::VariableContent;
+use widestring::Utf16String;
 
-#[derive(Debug)]
+use super::{string::JsString, ToJsString, ValueType};
+
+#[derive(Debug, Clone)]
 pub struct JsArray {
-    pub values: Vec<VariableContent>
+	pub values: Vec<ValueType>
+}
+
+impl ToJsString for JsArray {
+	fn to_string(&self) -> JsString {
+		let mut s = Utf16String::from("[");
+		for i in self.values.iter() {
+			let i = i as &dyn ToJsString;
+			s.push_utfstr(&i.to_string().value);
+		}
+		s += "]";
+		JsString {
+			value: s
+		}
+	}
 }
\ No newline at end of file
diff --git a/src/data_types/big_int.rs b/src/data_types/big_int.rs
index 66b3111..f59d7dc 100644
--- a/src/data_types/big_int.rs
+++ b/src/data_types/big_int.rs
@@ -4,132 +4,132 @@ use super::{bool::JsBool, string::JsString};
 
 #[derive(Debug, Clone)]
 pub struct JsBigInt {
-    pub value: BigInt
+	pub value: BigInt
 }
 
 // Implements https://tc39.es/ecma262/2023/#table-numeric-type-ops
 impl JsBigInt {
-    pub fn unary_minus(&self) -> JsBigInt {
-        JsBigInt{
-            value: &self.value * -1
-        }
-    }
+	pub fn unary_minus(&self) -> JsBigInt {
+		JsBigInt{
+			value: &self.value * -1
+		}
+	}
 
-    pub fn bitwise_not(&self) -> JsBigInt {
-        JsBigInt{
-            value: !&self.value
-        }
-    }
+	pub fn bitwise_not(&self) -> JsBigInt {
+		JsBigInt{
+			value: !&self.value
+		}
+	}
 
-    pub fn exponentiate(&self, x: &JsBigInt) -> JsBigInt {
-        let (_, digits) = x.value.to_u32_digits();
-        JsBigInt{
-            value: self.value.pow(*digits.first().expect("Exponent bigint didn't have any digits"))
-        }
-    }
+	pub fn exponentiate(&self, x: &JsBigInt) -> JsBigInt {
+		let (_, digits) = x.value.to_u32_digits();
+		JsBigInt{
+			value: self.value.pow(*digits.first().expect("Exponent bigint didn't have any digits"))
+		}
+	}
 
-    pub fn multiply(&self, x: &JsBigInt) -> JsBigInt {
-        JsBigInt{
-            value: &self.value * &x.value
-        }
-    }
+	pub fn multiply(&self, x: &JsBigInt) -> JsBigInt {
+		JsBigInt{
+			value: &self.value * &x.value
+		}
+	}
 
-    pub fn divide(&self, x: &JsBigInt) -> JsBigInt {
-        JsBigInt{
-            value: &self.value / &x.value
-        }
-    }
+	pub fn divide(&self, x: &JsBigInt) -> JsBigInt {
+		JsBigInt{
+			value: &self.value / &x.value
+		}
+	}
 
-    pub fn add(&self, x: &JsBigInt) -> JsBigInt {
-        JsBigInt{
-            value: &self.value + &x.value
-        }
-    }
+	pub fn add(&self, x: &JsBigInt) -> JsBigInt {
+		JsBigInt{
+			value: &self.value + &x.value
+		}
+	}
 
-    pub fn pre_add(&mut self) -> JsBigInt {
-        self.value += 1;
-        self.clone()
-    }
+	pub fn pre_add(&mut self) -> JsBigInt {
+		self.value += 1;
+		self.clone()
+	}
 
-    pub fn post_add(&mut self) -> JsBigInt {
-        let old = self.clone();
-        self.value += 1;
-        old
-    }
+	pub fn post_add(&mut self) -> JsBigInt {
+		let old = self.clone();
+		self.value += 1;
+		old
+	}
 
-    pub fn subtract(&self, x: &JsBigInt) -> JsBigInt {
-        JsBigInt{
-            value: &self.value - &x.value
-        }
-    }
+	pub fn subtract(&self, x: &JsBigInt) -> JsBigInt {
+		JsBigInt{
+			value: &self.value - &x.value
+		}
+	}
 
-    pub fn pre_subtract(&mut self) -> JsBigInt {
-        self.value -= 1;
-        self.clone()
-    }
+	pub fn pre_subtract(&mut self) -> JsBigInt {
+		self.value -= 1;
+		self.clone()
+	}
 
-    pub fn post_subtract(&mut self) -> JsBigInt {
-        let old = self.clone();
-        self.value -= 1;
-        old
-    }
+	pub fn post_subtract(&mut self) -> JsBigInt {
+		let old = self.clone();
+		self.value -= 1;
+		old
+	}
 
-    pub fn left_shift(&self, x: &JsBigInt) -> JsBigInt {
-        let (_, digits) = x.value.to_u32_digits();
-        JsBigInt{
-            value: &self.value << *digits.first().expect("Shift amount bigint didn't have any digits")
-        }
-    }
-    
-    pub fn right_shift_signed(&self, x: &JsBigInt) -> JsBigInt {
-        let (_, digits) = x.value.to_u32_digits();
-        JsBigInt{
-            value: &self.value >> *digits.first().expect("Shift amount bigint didn't have any digits")
-        }
-    }
+	pub fn left_shift(&self, x: &JsBigInt) -> JsBigInt {
+		let (_, digits) = x.value.to_u32_digits();
+		JsBigInt{
+			value: &self.value << *digits.first().expect("Shift amount bigint didn't have any digits")
+		}
+	}
+	
+	pub fn right_shift_signed(&self, x: &JsBigInt) -> JsBigInt {
+		let (_, digits) = x.value.to_u32_digits();
+		JsBigInt{
+			value: &self.value >> *digits.first().expect("Shift amount bigint didn't have any digits")
+		}
+	}
 
-    pub fn right_shift_unsigned(&self, x: &JsBigInt) -> JsBigInt {
-        let (_, digits) = x.value.to_u32_digits();
-        let (_, old_bytes) = self.value.to_bytes_be();
-        let u = BigUint::from_bytes_be(&old_bytes);
-        JsBigInt{
-            value: (u >> *digits.first().expect("Shift amount bigint didn't have any digits")).to_bigint().expect("Failed to convert BigUInt to BigInt")
-        }
-    }
+	pub fn right_shift_unsigned(&self, x: &JsBigInt) -> JsBigInt {
+		let (_, digits) = x.value.to_u32_digits();
+		let (_, old_bytes) = self.value.to_bytes_be();
+		let u = BigUint::from_bytes_be(&old_bytes);
+		JsBigInt{
+			value: (u >> *digits.first().expect("Shift amount bigint didn't have any digits")).to_bigint().expect("Failed to convert BigUInt to BigInt")
+		}
+	}
 
-    pub fn less_than(&self, x: &JsBigInt) -> JsBool {
-        JsBool { value: self.value < x.value }
-    }
+	pub fn less_than(&self, x: &JsBigInt) -> JsBool {
+		JsBool { value: self.value < x.value }
+	}
 
-    pub fn equal(&self, x: &JsBigInt) -> JsBool {
-        JsBool { value: self.value == x.value }
-    }
+	pub fn equal(&self, x: &JsBigInt) -> JsBool {
+		JsBool { value: self.value == x.value }
+	}
 
-    pub fn same_value(&self, x: &JsBigInt) -> JsBool {
-        JsBool { value: std::ptr::eq(self, x) }
-    }
+	pub fn same_value(&self, x: &JsBigInt) -> JsBool {
+		JsBool { value: std::ptr::eq(self, x) }
+	}
 
-    pub fn bitwise_and(&self, x: &JsBigInt) -> JsBigInt {
-        JsBigInt{
-            value: &self.value & &x.value
-        }
-    }
+	pub fn bitwise_and(&self, x: &JsBigInt) -> JsBigInt {
+		JsBigInt{
+			value: &self.value & &x.value
+		}
+	}
 
-    pub fn bitwise_xor(&self, x: &JsBigInt) -> JsBigInt {
-        JsBigInt{
-            value: &self.value ^ &x.value
-        }
-    }
+	pub fn bitwise_xor(&self, x: &JsBigInt) -> JsBigInt {
+		JsBigInt{
+			value: &self.value ^ &x.value
+		}
+	}
 
-    pub fn bitwise_or(&self, x: &JsBigInt) -> JsBigInt {
-        JsBigInt{
-            value: &self.value | &x.value
-        }
-    }
+	pub fn bitwise_or(&self, x: &JsBigInt) -> JsBigInt {
+		JsBigInt{
+			value: &self.value | &x.value
+		}
+	}
 
-    pub fn to_string(&self) -> JsString {
-        JsString {
-            value: self.value.to_string().into()
-        }
-    }
+	pub fn to_string(&self) -> JsString {
+		JsString {
+			value: self.value.to_string().into()
+		}
+	}
 }
diff --git a/src/data_types/bool.rs b/src/data_types/bool.rs
index dd3f0f5..5848c7e 100644
--- a/src/data_types/bool.rs
+++ b/src/data_types/bool.rs
@@ -1,12 +1,24 @@
-#[derive(Debug)]
+use widestring::Utf16String;
+
+use super::{string::JsString, ToJsString};
+
+#[derive(Debug, Clone)]
 pub struct JsBool {
-    pub value: bool
+	pub value: bool
 }
 
 pub const TRUE: JsBool = JsBool{
-    value: true,
+	value: true,
 };
 
 pub const FALSE: JsBool = JsBool{
-    value: false,
-};
\ No newline at end of file
+	value: false,
+};
+
+impl ToJsString for JsBool {
+	fn to_string(&self) -> JsString {
+		JsString { 
+			value: if self.value {Utf16String::from("true")} else {Utf16String::from("false")}
+		}
+	}
+}
\ No newline at end of file
diff --git a/src/data_types/mod.rs b/src/data_types/mod.rs
index 1094bef..7b5e9a3 100644
--- a/src/data_types/mod.rs
+++ b/src/data_types/mod.rs
@@ -9,20 +9,37 @@ pub mod big_int;
 pub mod object;
 pub mod array;
 
-#[derive(Debug, Default)]
+#[derive(Debug, Default, Clone)]
 pub enum VariableContent {
-    #[default]
-    Undefined,
-    Null,
-    Value(ValueType),
+	#[default]
+	Undefined,
+	Null,
+	Value(ValueType),
 }
 
-#[derive(Debug)]
+#[derive(Debug, Clone)]
 pub enum ValueType {
-    Bool(JsBool),
-    String(JsString),
-    Symbol(JsSymbol),
-    Number(JsNumber),
-    BigInt(JsBigInt),
-    Object(JsObject),
+	Bool(JsBool),
+	String(JsString),
+	Symbol(JsSymbol),
+	Number(JsNumber),
+	BigInt(JsBigInt),
+	Object(JsObject),
+}
+
+pub trait ToJsString {
+	fn to_string(&self) -> JsString;
+}
+
+impl ToJsString for ValueType {
+	fn to_string(&self) -> JsString {
+		match &self {
+    		ValueType::Bool(x) => x.to_string(),
+    		ValueType::String(x) => x.clone(),
+    		ValueType::Symbol(x) => todo!(),
+    		ValueType::Number(x) => x.to_string(),
+    		ValueType::BigInt(x) => x.to_string(),
+    		ValueType::Object(x) => x.to_string(),
+		}
+	}
 }
\ No newline at end of file
diff --git a/src/data_types/number.rs b/src/data_types/number.rs
index 9620aae..69578b3 100644
--- a/src/data_types/number.rs
+++ b/src/data_types/number.rs
@@ -1,158 +1,161 @@
-use super::{bool::JsBool, string::JsString};
+use super::{bool::JsBool, string::JsString, ToJsString};
 use widestring::{utf16str, Utf16String};
 
 #[derive(Debug, Clone, Copy)]
 pub struct JsNumber {
-    pub value: f64
+	pub value: f64
 }
 
 pub const NAN: JsNumber = JsNumber{
-    value: f64::NAN,
+	value: f64::NAN,
 };
 
 // Implements https://tc39.es/ecma262/2023/#table-numeric-type-ops
 impl JsNumber {
-    pub fn unary_minus(&self) -> JsNumber {
-        jsnum_math_op(&self, &self, |x, _| -x)
-    }
+	pub fn unary_minus(&self) -> JsNumber {
+		jsnum_math_op(&self, &self, |x, _| -x)
+	}
 
-    pub fn bitwise_not(&self) -> JsNumber {
-        jsnum_math_op(&self, &self, |x, _| !i64::from(x.floor() as i64) as f64)
-    }
+	pub fn bitwise_not(&self) -> JsNumber {
+		jsnum_math_op(&self, &self, |x, _| !i64::from(x.floor() as i64) as f64)
+	}
 
-    pub fn exponentiate(&self, x: &JsNumber) -> JsNumber {
-        jsnum_math_op(&self, &x, |x, y| x.powf(*y))
-    }
+	pub fn exponentiate(&self, x: &JsNumber) -> JsNumber {
+		jsnum_math_op(&self, &x, |x, y| x.powf(*y))
+	}
 
-    pub fn multiply(&self, x: &JsNumber) -> JsNumber {
-        jsnum_math_op(&self, &x, |x, y| x * y)
-    }
+	pub fn multiply(&self, x: &JsNumber) -> JsNumber {
+		jsnum_math_op(&self, &x, |x, y| x * y)
+	}
 
-    pub fn divide(&self, x: &JsNumber) -> JsNumber {
-        jsnum_math_op(&self, &x, |x, y| x % y)
-    }
+	pub fn divide(&self, x: &JsNumber) -> JsNumber {
+		jsnum_math_op(&self, &x, |x, y| x % y)
+	}
 
-    pub fn add(&self, x: &JsNumber) -> JsNumber {
-        jsnum_math_op(&self, &x, |x, y| x + y)
-    }
+	pub fn add(&self, x: &JsNumber) -> JsNumber {
+		jsnum_math_op(&self, &x, |x, y| x + y)
+	}
 
-    pub fn pre_add(&mut self) -> JsNumber {
-        return if self.value.is_nan() {
-            return NAN.clone()
-        } else {
-            self.value += 1.0;
-            self.clone()
-        }
-    }
+	pub fn pre_add(&mut self) -> JsNumber {
+		return if self.value.is_nan() {
+			return NAN.clone()
+		} else {
+			self.value += 1.0;
+			self.clone()
+		}
+	}
 
-    pub fn post_add(&mut self) -> JsNumber {
-        return if self.value.is_nan() {
-            return NAN.clone()
-        } else {
-            let old = self.clone();
-            self.value += 1.0;
-            old
-        }
-    }
+	pub fn post_add(&mut self) -> JsNumber {
+		return if self.value.is_nan() {
+			return NAN.clone()
+		} else {
+			let old = self.clone();
+			self.value += 1.0;
+			old
+		}
+	}
 
-    pub fn subtract(&self, x: &JsNumber) -> JsNumber {
-        jsnum_math_op(&self, &x, |x, y| x - y)
-    }
+	pub fn subtract(&self, x: &JsNumber) -> JsNumber {
+		jsnum_math_op(&self, &x, |x, y| x - y)
+	}
 
-    pub fn pre_subtract(&mut self) -> JsNumber {
-        return if self.value.is_nan() {
-            return NAN.clone()
-        } else {
-            self.value -= 1.0;
-            self.clone()
-        }
-    }
+	pub fn pre_subtract(&mut self) -> JsNumber {
+		return if self.value.is_nan() {
+			return NAN.clone()
+		} else {
+			self.value -= 1.0;
+			self.clone()
+		}
+	}
 
-    pub fn post_subtract(&mut self) -> JsNumber {
-        return if self.value.is_nan() {
-            return NAN.clone()
-        } else {
-            let old = self.clone();
-            self.value -= 1.0;
-            old
-        }
-    }
+	pub fn post_subtract(&mut self) -> JsNumber {
+		return if self.value.is_nan() {
+			return NAN.clone()
+		} else {
+			let old = self.clone();
+			self.value -= 1.0;
+			old
+		}
+	}
 
-    pub fn left_shift(&self, x: &JsNumber) -> JsNumber {
-        jsnum_math_op(&self, &x, |x, y| ((x.floor() as i64) << (y.floor() as i64)) as f64)
-    }
-    
-    pub fn right_shift_signed(&self, x: &JsNumber) -> JsNumber {
-        jsnum_math_op(&self, &x, |x, y| ((x.floor() as i64) >> (y.floor() as i64)) as f64)
-    }
+	pub fn left_shift(&self, x: &JsNumber) -> JsNumber {
+		jsnum_math_op(&self, &x, |x, y| ((x.floor() as i64) << (y.floor() as i64)) as f64)
+	}
+	
+	pub fn right_shift_signed(&self, x: &JsNumber) -> JsNumber {
+		jsnum_math_op(&self, &x, |x, y| ((x.floor() as i64) >> (y.floor() as i64)) as f64)
+	}
 
-    pub fn right_shift_unsigned(&self, x: &JsNumber) -> JsNumber {
-        jsnum_math_op(&self, &x, |x, y| (((x.floor() as i64) as u64) >> (y.floor() as i64)) as f64)
-    }
+	pub fn right_shift_unsigned(&self, x: &JsNumber) -> JsNumber {
+		jsnum_math_op(&self, &x, |x, y| (((x.floor() as i64) as u64) >> (y.floor() as i64)) as f64)
+	}
 
-    pub fn less_than(&self, x: &JsNumber) -> JsBool {
-        jsnum_comp_op(&self, &x, |x, y| x < y)
-    }
+	pub fn less_than(&self, x: &JsNumber) -> JsBool {
+		jsnum_comp_op(&self, &x, |x, y| x < y)
+	}
 
-    pub fn equal(&self, x: &JsNumber) -> JsBool {
-        jsnum_comp_op(&self, &x, |x, y| x == y)
-    }
+	pub fn equal(&self, x: &JsNumber) -> JsBool {
+		jsnum_comp_op(&self, &x, |x, y| x == y)
+	}
 
-    pub fn same_value(&self, x: &JsNumber) -> JsBool {
-        JsBool { value: std::ptr::eq(self, x) }
-    }
+	pub fn same_value(&self, x: &JsNumber) -> JsBool {
+		JsBool { value: std::ptr::eq(self, x) }
+	}
 
-    pub fn bitwise_and(&self, x: &JsNumber) -> JsNumber {
-        jsnum_math_op(&self, &x, |x, y| ((x.floor() as i64) & (y.floor() as i64)) as f64)
-    }
+	pub fn bitwise_and(&self, x: &JsNumber) -> JsNumber {
+		jsnum_math_op(&self, &x, |x, y| ((x.floor() as i64) & (y.floor() as i64)) as f64)
+	}
 
-    pub fn bitwise_xor(&self, x: &JsNumber) -> JsNumber {
-        jsnum_math_op(&self, &x, |x, y| ((x.floor() as i64) ^ (y.floor() as i64)) as f64)
-    }
+	pub fn bitwise_xor(&self, x: &JsNumber) -> JsNumber {
+		jsnum_math_op(&self, &x, |x, y| ((x.floor() as i64) ^ (y.floor() as i64)) as f64)
+	}
 
-    pub fn bitwise_or(&self, x: &JsNumber) -> JsNumber {
-        jsnum_math_op(&self, &x, |x, y| ((x.floor() as i64) | (y.floor() as i64)) as f64)
-    }
+	pub fn bitwise_or(&self, x: &JsNumber) -> JsNumber {
+		jsnum_math_op(&self, &x, |x, y| ((x.floor() as i64) | (y.floor() as i64)) as f64)
+	}
 
-    pub fn to_string(&self) -> JsString {
-        if self.value.is_infinite() {
-            JsString{
-                value: utf16str!("Infinity").to_owned()
-            }
-        } else if self.value.is_nan() {
-            JsString{
-                value: utf16str!("NaN").to_owned()
-            }
-        } else {
-            JsString{
-                value: Utf16String::from_str(&self.value.to_string())
-            }
-        }
-    }
+}
+
+impl ToJsString for JsNumber {
+	fn to_string(&self) -> JsString {
+		if self.value.is_infinite() {
+			JsString{
+				value: utf16str!("Infinity").to_owned()
+			}
+		} else if self.value.is_nan() {
+			JsString{
+				value: utf16str!("NaN").to_owned()
+			}
+		} else {
+			JsString{
+				value: Utf16String::from_str(&self.value.to_string())
+			}
+		}
+	}
 }
 
 fn jsnum_math_op<F>(x: &JsNumber, y: &JsNumber, f: F) -> JsNumber where
-    F: Fn(&f64, &f64) -> f64
+	F: Fn(&f64, &f64) -> f64
 {
-    if x.value.is_nan() || y.value.is_nan() {
-        NAN.clone()
-    } else {
-        let value = f(&x.value, &y.value);
-        JsNumber{
-            value
-        }
-    }
+	if x.value.is_nan() || y.value.is_nan() {
+		NAN.clone()
+	} else {
+		let value = f(&x.value, &y.value);
+		JsNumber{
+			value
+		}
+	}
 }
 
 fn jsnum_comp_op<F>(x: &JsNumber, y: &JsNumber, f: F) -> JsBool where
-    F: Fn(&f64, &f64) -> bool
+	F: Fn(&f64, &f64) -> bool
 {
-    if x.value.is_nan() || y.value.is_nan() {
-        super::bool::FALSE
-    } else {
-        let value = f(&x.value, &y.value);
-        JsBool{
-            value
-        }
-    }
+	if x.value.is_nan() || y.value.is_nan() {
+		super::bool::FALSE
+	} else {
+		let value = f(&x.value, &y.value);
+		JsBool{
+			value
+		}
+	}
 }
\ No newline at end of file
diff --git a/src/data_types/object.rs b/src/data_types/object.rs
index ec409e9..0800a6f 100644
--- a/src/data_types/object.rs
+++ b/src/data_types/object.rs
@@ -1,6 +1,18 @@
 use std::collections::HashMap;
 
-#[derive(Debug)]
+use widestring::Utf16String;
+
+use super::{string::JsString, ToJsString};
+
+#[derive(Debug, Clone)]
 pub struct JsObject {
-    pub value: HashMap<String, super::VariableContent>
+	pub value: HashMap<String, super::VariableContent>
+}
+
+impl ToJsString for JsObject {
+	fn to_string(&self) -> JsString {
+		JsString{
+			value: Utf16String::from_str("[object Object]")
+		}
+	}
 }
\ No newline at end of file
diff --git a/src/data_types/string.rs b/src/data_types/string.rs
index 082529d..596700c 100644
--- a/src/data_types/string.rs
+++ b/src/data_types/string.rs
@@ -1,6 +1,14 @@
 use widestring::Utf16String;
 
-#[derive(Debug)]
+use super::ToJsString;
+
+#[derive(Debug, Clone)]
 pub struct JsString {
-    pub value: Utf16String,
+	pub value: Utf16String,
+}
+
+impl ToJsString for JsString {
+	fn to_string(&self) -> JsString {
+		self.clone()
+	}
 }
\ No newline at end of file
diff --git a/src/data_types/symbol.rs b/src/data_types/symbol.rs
index c86d43c..e4e7b3c 100644
--- a/src/data_types/symbol.rs
+++ b/src/data_types/symbol.rs
@@ -1,4 +1,4 @@
-#[derive(Debug)]
+#[derive(Debug, Clone)]
 pub struct JsSymbol {
-    pub value: f64, // TODO: Understand what symbol is and turn this into a representation for those
+	pub value: f64, // TODO: Understand what symbol is and turn this into a representation for those
 }
\ No newline at end of file