avoid inlining identityFn(...expandedArgs). closes #1226

terser · Jul 19, 2022 · ea5dcc3 · ea5dcc3
1 parent 0136e8a
commit ea5dcc3
Show file tree

Hide file tree

Showing 2 changed files with 16 additions and 0 deletions.
diff --git a/lib/compress/inline.js b/lib/compress/inline.js
@@ -335,6 +335,7 @@ export function inline_into_call(self, fn, compressor) {
             fn.argnames.length === 1
             && (fn.argnames[0] instanceof AST_SymbolFunarg)
             && self.args.length < 2
+            && !(self.args[0] instanceof AST_Expansion)
             && returned instanceof AST_SymbolRef
             && returned.name === fn.argnames[0].name
         ) {

diff --git a/test/compress/identity.js b/test/compress/identity.js
@@ -249,3 +249,18 @@ inline_identity_dont_lose_this_when_arg: {
     }
 }
 
+inline_trivial_fns_unless_arg_is_expansion: {
+    options = {
+        toplevel: true,
+        inline: true,
+    }
+    input: {
+        function n (n) {
+            return n;
+        }
+        (function(...o) {
+            const c=n(...o);console.log(c)
+        })("PASS");
+    }
+    expect_stdout: "PASS"
+}