Update acorn, remove unused acorn plugins

Author: goto-bus-stop

package.json

@@ -7,18 +7,15 @@
     "url": "https://github.com/browserify/acorn-node/issues"
   },
   "dependencies": {
-    "acorn": "^7.4.0",
-    "acorn-walk": "^7.2.0",
+    "acorn": "^8.8.2",
+    "acorn-walk": "^8.2.0",
     "setprototypeof": "^1.2.0",
     "xtend": "^4.0.2"
   },
   "devDependencies": {
     "@babel/cli": "^7.10.1",
     "@babel/core": "^7.10.1",
     "@babel/preset-env": "^7.10.1",
-    "acorn-class-fields": "^0.3.4",
-    "acorn-private-class-elements": "^0.2.5",
-    "acorn-static-class-features": "^0.2.2",
     "mkdirp": "^0.5.5",
     "npm-run-all": "^4.1.5",
     "standard": "^13.1.0",
@@ -41,9 +38,6 @@
     "lint": "standard",
     "test": "node test",
     "prepare": "npm run build && node test",
-    "build:acorn-class-fields": "babel node_modules/acorn-class-fields --out-dir lib/acorn-class-fields",
-    "build:acorn-static-class-features": "babel node_modules/acorn-static-class-features --out-dir lib/acorn-static-class-features",
-    "build:acorn-private-class-elements": "babel node_modules/acorn-private-class-elements --out-dir lib/acorn-private-class-elements",
     "build:self": "babel src --out-dir .",
     "build": "npm-run-all --parallel build:*"
   },

src/index.js

@@ -1,16 +1,18 @@
+'use strict'
+
 var acorn = require('acorn')
 
 var CJSParser = acorn.Parser
   // Required paths should be relative to the package root, because Babel outputs this file there.
-  .extend(require('./lib/acorn-class-fields'))
-  .extend(require('./lib/acorn-static-class-features'))
+  // .extend(require('./lib/acorn-class-fields'))
+  // .extend(require('./lib/acorn-static-class-features'))
   .extend(defaultOptionsPlugin)
 var ESModulesParser = CJSParser
 
 function mapOptions (opts) {
   if (!opts) opts = {}
   return {
-    ecmaVersion: 2021,
+    ecmaVersion: 2022,
     allowHashBang: true,
     allowReturnOutsideFunction: true,
     ...opts

test/index.js

@@ -17,7 +17,7 @@ test('parses object spread syntax', function (t) {
 
 test('does not change main acorn module', function (t) {
   t.throws(function () {
-    baseAcorn.parse('var a = 10n')
+    baseAcorn.parse('return 10n', { ecmaVersion: 2022 })
   })
   t.end()
 })