fix(es/minifier): Use unsafe option for arrow => method (#6521)

**Related issue:**

 - Closes #6504.
 - vercel/next.js#43208.

crates/swc/tests/tsc-references/computedPropertyNamesContextualType6_ES6.2.minified.js

@@ -1,7 +1,7 @@
 //// [computedPropertyNamesContextualType6_ES6.ts]
 foo({
     p: "",
-    0 () {},
+    0: ()=>{},
     hibye: !0,
     1: 0,
     [NaN]: [

crates/swc/tests/tsc-references/computedPropertyNamesContextualType7_ES6.2.minified.js

@@ -1,6 +1,6 @@
 //// [computedPropertyNamesContextualType7_ES6.ts]
 foo({
-    0 () {},
+    0: ()=>{},
     hibye: !0,
     1: 0,
     [NaN]: [

crates/swc/tests/tsc-references/importCallExpressionAsyncES2020.2.minified.js

@@ -8,14 +8,14 @@ export class cl1 {
     }
 }
 export const obj = {
-    async m () {
+    m: async ()=>{
         await import('./test');
     }
 };
 export class cl2 {
     constructor(){
         this.p = {
-            async m () {
+            m: async ()=>{
                 await import('./test');
             }
         };

crates/swc_ecma_minifier/src/compress/pure/arrows.rs

@@ -121,6 +121,15 @@ impl Pure<'_> {
         }
 
         if let Prop::KeyValue(kv) = p {
+            // See https://github.com/swc-project/swc/pull/6521
+            //
+            // ({foo(){}}).foo.toString()
+            //
+            // returns `foo(){}`
+            if !self.options.unsafe_methods {
+                return;
+            }
+
             //
             if contains_this_expr(&kv.value) {
                 return;

crates/swc_ecma_minifier/tests/benches-full/d3.js

@@ -390,7 +390,7 @@
         }, axis;
     }
     var noop = {
-        value () {}
+        value: ()=>{}
     };
     function dispatch() {
         for(var t, i = 0, n = arguments.length, _ = {}; i < n; ++i){

crates/swc_ecma_minifier/tests/benches-full/terser.js

@@ -1963,7 +1963,7 @@
         walk: function(visitor) {
             return this._walk(visitor);
         },
-        _children_backwards () {}
+        _children_backwards: ()=>{}
     }, null), AST_Statement = DEFNODE("Statement", null, {
         $documentation: "Base class of all statements"
     }), AST_Debugger = DEFNODE("Debugger", null, {

crates/swc_ecma_minifier/tests/fixture/issues/firebase-firestore/1/output.js

@@ -3207,7 +3207,7 @@
                     const c = s.createWebChannel(o, r);
                     let a = !1, u = !1;
                     const h = new Gr({
-                        vi (t) {
+                        vi: (t)=>{
                             u ? $("Connection", "Not sending because WebChannel is closed:", t) : (a || ($("Connection", "Opening WebChannel transport."), c.open(), a = !0), $("Connection", "WebChannel sending:", t), c.send(t));
                         },
                         Vi: ()=>c.close()
@@ -4947,7 +4947,7 @@
                     const s = new Q();
                     return t.asyncQueue.enqueueAndForget(async ()=>(function(t, e, n, s, i) {
                             const r = new Lc({
-                                next (n) {
+                                next: (n)=>{
                                     e.enqueueAndForget(()=>Uo(t, o)), n.fromCache && "server" === s.source ? i.reject(new j(K.UNAVAILABLE, 'Failed to get documents from server. (However, these documents may exist in the local cache. Run again without setting source to "server" to retrieve the cached documents.)')) : i.resolve(n);
                                 },
                                 error: (t)=>i.reject(t)

crates/swc_ecma_minifier/tests/fixture/next/43208/config.json

@@ -0,0 +1,6 @@
+{
+    "defaults": true,
+    "toplevel": true,
+    "arrows": true,
+    "ecma": 2022
+}

crates/swc_ecma_minifier/tests/fixture/next/43208/static/chunks/pages/index-e1d69965f0f167c9/input.js

@@ -0,0 +1,77 @@
+(self["webpackChunk_N_E"] = self["webpackChunk_N_E"] || []).push([[405], {
+
+/***/ 4186:
+/***/ (function (__unused_webpack_module, __webpack_exports__, __webpack_require__) {
+
+            "use strict";
+            __webpack_require__.r(__webpack_exports__);
+/* harmony export */ __webpack_require__.d(__webpack_exports__, {
+/* harmony export */   "default": function () { return /* binding */ Home; }
+                /* harmony export */
+            });
+/* harmony import */ var react_jsx_runtime__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(5893);
+/* harmony import */ var react__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(7294);
+/* harmony import */ var _styles_Home_module_css__WEBPACK_IMPORTED_MODULE_4__ = __webpack_require__(7160);
+/* harmony import */ var _styles_Home_module_css__WEBPACK_IMPORTED_MODULE_4___default = /*#__PURE__*/__webpack_require__.n(_styles_Home_module_css__WEBPACK_IMPORTED_MODULE_4__);
+/* harmony import */ var _gmod_binary_parser__WEBPACK_IMPORTED_MODULE_2__ = __webpack_require__(9996);
+/* harmony import */ var binary_parser__WEBPACK_IMPORTED_MODULE_3__ = __webpack_require__(9567);
+/* provided dependency */ var Buffer = __webpack_require__(1876)["Buffer"];
+
+
+
+
+
+            function Home() {
+                (0, react__WEBPACK_IMPORTED_MODULE_1__.useEffect)(() => {
+                    const ipHeader1 = new _gmod_binary_parser__WEBPACK_IMPORTED_MODULE_2__/* .Parser */._().uint8("compressionMethod", {
+                        formatter: (b) => {
+                            const method = [
+                                "raw"
+                            ][b];
+                            if (!method) {
+                                // never gets here
+                                console.log("in @gmod/binary-parser");
+                            }
+                            return method;
+                        }
+                    });
+                    const ipHeader2 = new binary_parser__WEBPACK_IMPORTED_MODULE_3__/* .Parser */._().uint8("compressionMethod", {
+                        formatter: (b) => {
+                            const method = [
+                                "raw"
+                            ][b];
+                            if (!method) {
+                                console.log("in binary-parser");
+                            }
+                            return method;
+                        }
+                    });
+                    console.log({
+                        ipHeader1,
+                        ipHeader2
+                    });
+                    // wouldn't actually parse correctly, just shows minification crash
+                    const buf = Buffer.from("450002c5939900002c06ef98adc24f6c850186d1", "hex");
+                    console.log(ipHeader2.parse(buf));
+                    console.log(ipHeader1.parse(buf));
+                }, []);
+                return /*#__PURE__*/ (0, react_jsx_runtime__WEBPACK_IMPORTED_MODULE_0__.jsx)("div", {
+                    className: (_styles_Home_module_css__WEBPACK_IMPORTED_MODULE_4___default().container),
+                    children: "hello"
+                });
+            }
+
+
+            /***/
+        }),
+
+
+},
+/******/ function (__webpack_require__) { // webpackRuntimeModules
+/******/ var __webpack_exec__ = function (moduleId) { return __webpack_require__(__webpack_require__.s = moduleId); }
+/******/ __webpack_require__.O(0, [390, 774, 888, 179], function () { return __webpack_exec__(8312); });
+/******/ var __webpack_exports__ = __webpack_require__.O();
+/******/ _N_E = __webpack_exports__;
+    /******/
+}
+]);

crates/swc_ecma_minifier/tests/fixture/next/43208/static/chunks/pages/index-e1d69965f0f167c9/output.js

@@ -0,0 +1,54 @@
+(self.webpackChunk_N_E = self.webpackChunk_N_E || []).push([
+    [
+        405
+    ],
+    {
+        4186: function(__unused_webpack_module, __webpack_exports__, __webpack_require__) {
+            "use strict";
+            __webpack_require__.r(__webpack_exports__), __webpack_require__.d(__webpack_exports__, {
+                default: function() {
+                    return Home;
+                }
+            });
+            var react_jsx_runtime__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(5893), react__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(7294), _styles_Home_module_css__WEBPACK_IMPORTED_MODULE_4__ = __webpack_require__(7160), _styles_Home_module_css__WEBPACK_IMPORTED_MODULE_4___default = __webpack_require__.n(_styles_Home_module_css__WEBPACK_IMPORTED_MODULE_4__), _gmod_binary_parser__WEBPACK_IMPORTED_MODULE_2__ = __webpack_require__(9996), binary_parser__WEBPACK_IMPORTED_MODULE_3__ = __webpack_require__(9567), Buffer = __webpack_require__(1876).Buffer;
+            function Home() {
+                return (0, react__WEBPACK_IMPORTED_MODULE_1__.useEffect)(()=>{
+                    const ipHeader1 = new _gmod_binary_parser__WEBPACK_IMPORTED_MODULE_2__._().uint8("compressionMethod", {
+                        formatter: (b)=>{
+                            const method = [
+                                "raw"
+                            ][b];
+                            return method || console.log("in @gmod/binary-parser"), method;
+                        }
+                    }), ipHeader2 = new binary_parser__WEBPACK_IMPORTED_MODULE_3__._().uint8("compressionMethod", {
+                        formatter: (b)=>{
+                            const method = [
+                                "raw"
+                            ][b];
+                            return method || console.log("in binary-parser"), method;
+                        }
+                    });
+                    console.log({
+                        ipHeader1,
+                        ipHeader2
+                    });
+                    const buf = Buffer.from("450002c5939900002c06ef98adc24f6c850186d1", "hex");
+                    console.log(ipHeader2.parse(buf)), console.log(ipHeader1.parse(buf));
+                }, []), (0, react_jsx_runtime__WEBPACK_IMPORTED_MODULE_0__.jsx)("div", {
+                    className: _styles_Home_module_css__WEBPACK_IMPORTED_MODULE_4___default().container,
+                    children: "hello"
+                });
+            }
+        }
+    },
+    function(__webpack_require__) {
+        __webpack_require__.O(0, [
+            390,
+            774,
+            888,
+            179
+        ], function() {
+            return __webpack_require__(__webpack_require__.s = 8312);
+        }), _N_E = __webpack_require__.O();
+    }
+]);