Fixed precedence of export default iife

sanex3339 · sanex3339 · commit 51e5bce153ac · 2021-10-16T18:25:26.000+03:00
diff --git a/escodegen.js b/escodegen.js
@@ -1914,7 +1914,7 @@
         },
 
         CallExpression: function (expr, precedence, flags) {
-            var result, i, iz;
+            var result, i, iz, isIIFE;
 
             // F_ALLOW_UNPARATH_NEW becomes false.
             result = [this.generateExpression(expr.callee, Precedence.Call, E_TTF)];
@@ -1936,7 +1936,11 @@
                 return ['(', result, ')'];
             }
 
-            return parenthesize(result, Precedence.Call, precedence);
+            isIIFE = expr.callee.id === null && expr.callee.params.length === 0;
+
+            return isIIFE
+                ? parenthesize(result, precedence, Precedence.Call)
+                : parenthesize(result, Precedence.Call, precedence);
         },
 
         ChainExpression: function (expr, precedence, flags) {
diff --git a/test/compare-esprima2/export-default-declaration.expected.js b/test/compare-esprima2/export-default-declaration.expected.js
@@ -6,3 +6,5 @@ export default class A {
 }
 export default class {
 }
+export default (function () {
+}());
diff --git a/test/compare-esprima2/export-default-declaration.expected.min.js b/test/compare-esprima2/export-default-declaration.expected.min.js
@@ -1 +1 @@
-export default function a(){}export default function (){}export default class A{}export default class{}
+export default function a(){}export default function (){}export default class A{}export default class{}export default(function(){}())
diff --git a/test/compare-esprima2/export-default-declaration.js b/test/compare-esprima2/export-default-declaration.js
@@ -4,3 +4,4 @@ export default function a () { }
 export default function () { }
 export default class A { }
 export default class { }
+export default (function () { }())

Original file line number	Diff line number	Diff line change
`@@ -6,3 +6,5 @@ export default class A {`
`6`	`6`	`}`
`7`	`7`	`export default class {`
`8`	`8`	`}`
	`9`	`+export default (function () {`
	`10`	`+}());`
Original file line number	Diff line number	Diff line change
`@@ -1 +1 @@`
`1`		`-export default function a(){}export default function (){}export default class A{}export default class{}`
	`1`	`+export default function a(){}export default function (){}export default class A{}export default class{}export default(function(){}())`