From cd4548fd8c32f67d0e8373f7a2c3cb625f43e6c4 Mon Sep 17 00:00:00 2001
From: Austaras <austaras@outlook.com>
Date: Tue, 23 Apr 2024 20:34:14 +0800
Subject: [PATCH] fix(es/minifier): Abort seq inline on recursive usage (#8887)

**Related issue:**

 - Closes #8841
---
 crates/swc_ecma_minifier/src/compress/optimize/sequences.rs  | 2 +-
 crates/swc_ecma_minifier/tests/fixture/issues/8841/input.js  | 4 ++++
 crates/swc_ecma_minifier/tests/fixture/issues/8841/output.js | 2 ++
 3 files changed, 7 insertions(+), 1 deletion(-)
 create mode 100644 crates/swc_ecma_minifier/tests/fixture/issues/8841/input.js
 create mode 100644 crates/swc_ecma_minifier/tests/fixture/issues/8841/output.js

diff --git a/crates/swc_ecma_minifier/src/compress/optimize/sequences.rs b/crates/swc_ecma_minifier/src/compress/optimize/sequences.rs
index 2a90e3c432a5..b1422fcc87eb 100644
--- a/crates/swc_ecma_minifier/src/compress/optimize/sequences.rs
+++ b/crates/swc_ecma_minifier/src/compress/optimize/sequences.rs
@@ -2308,7 +2308,7 @@ impl Optimizer<'_> {
                         can_take_init = true;
                     }
 
-                    if usage.inline_prevented {
+                    if usage.inline_prevented || usage.used_recursively {
                         return Ok(false);
                     }
 
diff --git a/crates/swc_ecma_minifier/tests/fixture/issues/8841/input.js b/crates/swc_ecma_minifier/tests/fixture/issues/8841/input.js
new file mode 100644
index 000000000000..c34cb561beb0
--- /dev/null
+++ b/crates/swc_ecma_minifier/tests/fixture/issues/8841/input.js
@@ -0,0 +1,4 @@
+export const k = (() => {
+    var x = x;
+    return x;
+})();
diff --git a/crates/swc_ecma_minifier/tests/fixture/issues/8841/output.js b/crates/swc_ecma_minifier/tests/fixture/issues/8841/output.js
new file mode 100644
index 000000000000..45a235405a64
--- /dev/null
+++ b/crates/swc_ecma_minifier/tests/fixture/issues/8841/output.js
@@ -0,0 +1,2 @@
+var x;
+export const k = x;