@@ -24618,8 +24618,9 @@ const installImprove = (modules) => {
 			(statement) =>
 				A.isReturnNode(statement)
 					? !statement.argument ||
-						!A.hasSideEffects(statement.argument, compressor)
-					: !A.hasSideEffects(statement, compressor)
+						!A.dropSideEffectFree(statement.argument, compressor)
+					: A.isSimpleStatementNode(statement) &&
+						!A.dropSideEffectFree(statement.expression, compressor)
 		);
 	// terser keeps a call of a function naming itself, whose own calls may read
 	// what it returns; a body running nothing calls nothing, itself included.
 
@@ -9338,6 +9338,8 @@ describe("syntax-printer", () => {
 			}
 			for (const input of [
 				'(function foo() { console.log("r"); return foo; })(); console.log(1);',
+				"try { (function f() { return f && x; })(); } catch (e) { console.log(e.name); } let x = 1;",
+				"try { (function f() { f; x; })(); } catch (e) { console.log(e.name); } let x = 1;",
 				"console.log((function foo(n) { return n ? foo(n - 1).x.y : {}; })(2));",
 				"var a = 1; var x = /* @__PURE__ */ (() => { if (a) return 1; })(); console.log(x);",
 				'var x = /* @__PURE__ */ (() => {})(console.log("arg")); console.log(x);',
Original file line number	Diff line number	Diff line change
`@@ -9338,6 +9338,8 @@ describe("syntax-printer", () => {`
`9338`	`9338`	`}`
`9339`	`9339`	`for (const input of [`
`9340`	`9340`	`'(function foo() { console.log("r"); return foo; })(); console.log(1);',`
	`9341`	`+ "try { (function f() { return f && x; })(); } catch (e) { console.log(e.name); } let x = 1;",`
	`9342`	`+ "try { (function f() { f; x; })(); } catch (e) { console.log(e.name); } let x = 1;",`
`9341`	`9343`	`"console.log((function foo(n) { return n ? foo(n - 1).x.y : {}; })(2));",`
`9342`	`9344`	`"var a = 1; var x = /* @__PURE__ */ (() => { if (a) return 1; })(); console.log(x);",`
`9343`	`9345`	`'var x = /* @__PURE__ */ (() => {})(console.log("arg")); console.log(x);',`