diff --git a/src/lib.rs b/src/lib.rs
index 8f0d80f..1035aa9 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,9 +1,13 @@
 use nom::{
-    IResult, Parser, branch::alt, bytes::complete::tag, combinator::map_res, sequence::delimited,
+    IResult, Parser,
+    branch::alt,
+    bytes::complete::tag,
+    combinator::{map_res, value},
+    sequence::delimited,
 };
 use std::collections::HashMap;
 
-#[derive(PartialEq, Debug)]
+#[derive(PartialEq, Debug, Clone)]
 pub enum JsonValue {
     Object(HashMap<String, JsonValue>),
     Array(Vec<JsonValue>),
@@ -15,16 +19,12 @@ pub enum JsonValue {
 }
 
 fn parse_null(input: &str) -> IResult<&str, JsonValue> {
-    let remaining = tag("null")(input)?.1;
-    Ok((remaining, JsonValue::Null))
+    value(JsonValue::Null, tag("null")).parse(input)
 }
 fn parse_bool(input: &str) -> IResult<&str, JsonValue> {
-    let parsed = map_res(alt((tag("true"), tag("false"))), |st: &str| {
-        st.parse::<bool>()
-    })
-    .parse(input)?;
-
-    Ok((parsed.0, JsonValue::Boolean(parsed.1)))
+    alt((value(true, tag("true")), value(false, tag("false"))))
+        .map(JsonValue::Boolean)
+        .parse(input)
 }
 fn parse_string(input: &str) -> IResult<&str, JsonValue> {
     delimited(tag("\""), parse_string_inner, tag("\"")).parse(input)