From 8a6a1cbcf1279b805e740f4d77ebb9fb72d52d41 Mon Sep 17 00:00:00 2001
From: HeYunfei <i.heyunfei@gmail.com>
Date: Fri, 6 Jan 2023 16:15:07 +0800
Subject: [PATCH] feat(es/minifier): Handle boolean in `Evaluator` (#6756)

**Related issue:**

 - Closes https://github.com/swc-project/swc/issues/5953.
---
 crates/swc_ecma_minifier/src/eval.rs   | 11 +++++++----
 crates/swc_ecma_minifier/tests/eval.rs |  6 ++++++
 2 files changed, 13 insertions(+), 4 deletions(-)

diff --git a/crates/swc_ecma_minifier/src/eval.rs b/crates/swc_ecma_minifier/src/eval.rs
index ad3cb8b89b68..1451b9e8cad2 100644
--- a/crates/swc_ecma_minifier/src/eval.rs
+++ b/crates/swc_ecma_minifier/src/eval.rs
@@ -88,10 +88,13 @@ impl Evaluator {
         match e {
             Expr::Seq(s) => return self.eval(s.exprs.last()?),
 
-            Expr::Lit(l @ Lit::Null(..))
-            | Expr::Lit(l @ Lit::Num(..) | l @ Lit::Str(..) | l @ Lit::BigInt(..)) => {
-                return Some(EvalResult::Lit(l.clone()))
-            }
+            Expr::Lit(
+                l @ Lit::Num(..)
+                | l @ Lit::Str(..)
+                | l @ Lit::BigInt(..)
+                | l @ Lit::Bool(..)
+                | l @ Lit::Null(..),
+            ) => return Some(EvalResult::Lit(l.clone())),
 
             Expr::Tpl(t) => {
                 return self.eval_tpl(t);
diff --git a/crates/swc_ecma_minifier/tests/eval.rs b/crates/swc_ecma_minifier/tests/eval.rs
index 93d71b2d6cbd..3596279d4629 100644
--- a/crates/swc_ecma_minifier/tests/eval.rs
+++ b/crates/swc_ecma_minifier/tests/eval.rs
@@ -66,6 +66,12 @@ fn simple() {
     assert_eq!(eval("const foo = 4", "foo").unwrap(), "4");
 }
 
+#[test]
+fn eval_lit() {
+    assert_eq!(eval("", "true").unwrap(), "true");
+    assert_eq!(eval("", "false").unwrap(), "false");
+}
+
 struct PartialInliner {
     marks: Marks,
     eval: Option<Evaluator>,