sanex3339 · Aug 6, 2020 · Aug 6, 2020 · Aug 6, 2020 · Aug 6, 2020
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -2,6 +2,7 @@ Change Log
 
 v1.10.0
 ---
+* **Feature:** Optional chaining support!
 * Improved `disableConsoleOutput` template. https://github.com/javascript-obfuscator/javascript-obfuscator/issues/691
 
 v1.9.0

diff --git a/README.md b/README.md
@@ -1089,7 +1089,7 @@ Performance will slightly slower than without obfuscation
 
 ### What javascript versions are supported?
 
-`es3`, `es5`, `es2015`, `es2016` and `es2017`
+`es3`, `es5`, `es2015`, `es2016`, `es2017`, `es2018`, `es2019` and partially `es2020`
 
 ### I want to use feature that described in `README.md` but it's not working!
 

diff --git a/dist/index.browser.js b/dist/index.browser.js
diff --git a/dist/index.cli.js b/dist/index.cli.js
diff --git a/dist/index.js b/dist/index.js
diff --git a/package.json b/package.json
@@ -28,9 +28,9 @@
     "chance": "1.1.6",
     "class-validator": "0.12.2",
     "commander": "6.0.0",
-    "escodegen": "1.14.3",
+    "escodegen": "2.0.0",
     "eslint-scope": "5.1.0",
-    "estraverse": "5.1.0",
+    "estraverse": "5.2.0",
     "eventemitter3": "4.0.4",
     "fast-deep-equal": "3.1.3",
     "inversify": "5.0.1",
@@ -43,6 +43,9 @@
     "string-template": "1.0.0",
     "tslib": "2.0.0"
   },
+  "resolutions": {
+    "eslint-scope/esrecurse/estraverse": "5.2.0"
+  },
   "devDependencies": {
     "@types/chai": "4.2.12",
     "@types/chance": "1.1.0",
@@ -65,13 +68,13 @@
     "coveralls": "3.1.0",
     "eslint": "7.6.0",
     "eslint-plugin-import": "2.22.0",
-    "eslint-plugin-jsdoc": "30.2.0",
+    "eslint-plugin-jsdoc": "30.2.1",
     "eslint-plugin-no-null": "1.0.2",
     "eslint-plugin-prefer-arrow": "1.2.2",
     "eslint-plugin-unicorn": "21.0.0",
     "fork-ts-checker-notifier-webpack-plugin": "3.0.0",
     "fork-ts-checker-webpack-plugin": "5.0.14",
-    "mocha": "8.1.0",
+    "mocha": "8.1.1",
     "nyc": "15.1.0",
     "pjson": "1.0.9",
     "pre-commit": "1.2.2",

diff --git a/src/enums/node/NodeType.ts b/src/enums/node/NodeType.ts
@@ -10,6 +10,7 @@ export enum NodeType {
     BreakStatement = 'BreakStatement',
     CallExpression = 'CallExpression',
     CatchClause = 'CatchClause',
+    ChainExpression = 'ChainExpression',
     ClassDeclaration = 'ClassDeclaration',
     ConditionalExpression = 'ConditionalExpression',
     ContinueStatement = 'ContinueStatement',

diff --git a/test/dev/dev.ts b/test/dev/dev.ts
@@ -7,10 +7,13 @@ import { NO_ADDITIONAL_NODES_PRESET } from '../../src/options/presets/NoCustomNo
 
     let obfuscatedCode: string = JavaScriptObfuscator.obfuscate(
         `
-            function foo () {
-                const {bar, baz} = {bar: 1, baz: 2};
-                console.log(bar, baz);
-            }
+            const foo = {
+                bar: {
+                    baz: 1
+                }
+            };
+
+            console.log(foo.bar.baz);
         `,
         {
             ...NO_ADDITIONAL_NODES_PRESET,

diff --git a/test/functional-tests/javascript-obfuscator/JavaScriptObfuscator.spec.ts b/test/functional-tests/javascript-obfuscator/JavaScriptObfuscator.spec.ts
@@ -682,6 +682,32 @@ describe('JavaScriptObfuscator', () => {
             });
         });
 
+        describe('Optional chaining support', () => {
+            const regExp: RegExp = new RegExp(
+                'const _0x(\\w){4,6} *= *{ *' +
+                    '\'bar\': *\\(\\) *=> *{} *' +
+                '}; *' +
+                '_0x(\\w){4,6}\\?\\.\\[\'bar\']\\?\\.\\(\\);'
+            );
+
+            let obfuscatedCode: string;
+
+            beforeEach(() => {
+                const code: string = readFileAsString(__dirname + '/fixtures/optional-chaining-support.js');
+
+                obfuscatedCode = JavaScriptObfuscator.obfuscate(
+                    code,
+                    {
+                        ...NO_ADDITIONAL_NODES_PRESET
+                    }
+                ).getObfuscatedCode();
+            });
+
+            it('should support optional chaining', () => {
+                assert.match(obfuscatedCode, regExp);
+            });
+        });
+
         describe('mangled identifier names generator', () => {
             const regExp: RegExp = /var c *= *0x1/;
 

diff --git a/test/functional-tests/javascript-obfuscator/fixtures/optional-chaining-support.js b/test/functional-tests/javascript-obfuscator/fixtures/optional-chaining-support.js
@@ -0,0 +1,7 @@
+function test() {
+    const foo = {
+        bar: () => {}
+    };
+
+    foo?.bar?.();
+}
diff --git a/yarn.lock b/yarn.lock
@@ -1907,13 +1907,13 @@ [email protected], escape-string-regexp@^1.0.5:
   resolved "https://registry.yarnpkg.com/escape-string-regexp/-/escape-string-regexp-1.0.5.tgz#1b61c0562190a8dff6ae3bb2cf0200ca130b86d4"
   integrity sha1-G2HAViGQqN/2rjuyzwIAyhMLhtQ=
 
-escodegen@1.14.3:
-  version "1.14.3"
-  resolved "https://registry.yarnpkg.com/escodegen/-/escodegen-1.14.3.tgz#4e7b81fba61581dc97582ed78cab7f0e8d63f503"
-  integrity sha512-qFcX0XJkdg+PB3xjZZG/wKSuT1PnQWx57+TVSjIMmILd2yC/6ByYElPwJnslDsuWuSAp4AwJGumarAAmJch5Kw==
+escodegen@2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/escodegen/-/escodegen-2.0.0.tgz#5e32b12833e8aa8fa35e1bf0befa89380484c7dd"
+  integrity sha512-mmHKys/C8BFUGI+MAWNcSYoORYLMdPzjrknd2Vc+bUsjN5bXcr8EhrNB+UTqfL1y3I9c4fw2ihgtMPQLBRiQxw==
   dependencies:
     esprima "^4.0.1"
-    estraverse "^4.2.0"
+    estraverse "^5.2.0"
     esutils "^2.0.2"
     optionator "^0.8.1"
   optionalDependencies:
@@ -1962,15 +1962,15 @@ [email protected]:
     resolve "^1.17.0"
     tsconfig-paths "^3.9.0"
 
-[email protected].0:
-  version "30.2.0"
-  resolved "https://registry.yarnpkg.com/eslint-plugin-jsdoc/-/eslint-plugin-jsdoc-30.2.0.tgz#b6407a33410112e6bc12de3486ecdbbd488735a2"
-  integrity sha512-gBC5Wp7vSgMBRiGtCfjCgRQ9Wzdus6Hc8WuDNetYxuJoJ5rDHQMkJzBZ0/Qdg3fFh2eIpM7EcJD0pbrYKPxKLw==
+[email protected].1:
+  version "30.2.1"
+  resolved "https://registry.yarnpkg.com/eslint-plugin-jsdoc/-/eslint-plugin-jsdoc-30.2.1.tgz#6cac1a70ec239b4672888193d8a4e084a7e2d7bf"
+  integrity sha512-9Nx+BKMBoCTDRIbVpMV4MYfw+lvfnfsWTWYX9vwRRZrkXBpZkKtE3dsFcG6MhF7N/vW1cwpjEnoAIAtn0+a6gw==
   dependencies:
     comment-parser "^0.7.5"
     debug "^4.1.1"
-    jsdoctypeparser "^8.0.0"
-    lodash "^4.17.15"
+    jsdoctypeparser "^9.0.0"
+    lodash "^4.17.19"
     regextras "^0.7.1"
     semver "^7.3.2"
     spdx-expression-parse "^3.0.1"
@@ -2145,16 +2145,21 @@ esrecurse@^4.1.0:
   dependencies:
     estraverse "^4.1.0"
 
-[email protected], estraverse@^5.1.0:
-  version "5.1.0"
-  resolved "https://registry.yarnpkg.com/estraverse/-/estraverse-5.1.0.tgz#374309d39fd935ae500e7b92e8a6b4c720e59642"
-  integrity sha512-FyohXK+R0vE+y1nHLoBM7ZTyqRpqAlhdZHCWIWEviFLiGB8b04H6bQs8G+XTthacvT8VuwvteiP7RJSxMs8UEw==
+estraverse@5.2.0, estraverse@^4.1.0, estraverse@^5.2.0:
+  version "5.2.0"
+  resolved "https://registry.yarnpkg.com/estraverse/-/estraverse-5.2.0.tgz#307df42547e6cc7324d3cf03c155d5cdb8c53880"
+  integrity sha512-BxbNGGNm0RyRYvUdHpIwv9IWzeM9XClbOxwoATuFdOE7ZE6wHL+HQ5T8hoPM+zHvmKzzsEqhgy0GrQ5X13afiQ==
 
-estraverse@^4.1.0, estraverse@^4.1.1, estraverse@^4.2.0:
+estraverse@^4.1.1:
   version "4.3.0"
   resolved "https://registry.yarnpkg.com/estraverse/-/estraverse-4.3.0.tgz#398ad3f3c5a24948be7725e83d11a7de28cdbd1d"
   integrity sha512-39nnKffWz8xN1BU/2c79n9nB9HDzo0niYUqx6xyqUnyoAnQyyWpOTdZEeiCch8BBu515t4wp9ZmgVfVhn9EBpw==
 
+estraverse@^5.1.0:
+  version "5.1.0"
+  resolved "https://registry.yarnpkg.com/estraverse/-/estraverse-5.1.0.tgz#374309d39fd935ae500e7b92e8a6b4c720e59642"
+  integrity sha512-FyohXK+R0vE+y1nHLoBM7ZTyqRpqAlhdZHCWIWEviFLiGB8b04H6bQs8G+XTthacvT8VuwvteiP7RJSxMs8UEw==
+
 esutils@^2.0.2:
   version "2.0.3"
   resolved "https://registry.yarnpkg.com/esutils/-/esutils-2.0.3.tgz#74d2eb4de0b8da1293711910d50775b9b710ef64"
@@ -3208,10 +3213,10 @@ jsbn@~0.1.0:
   resolved "https://registry.yarnpkg.com/jsbn/-/jsbn-0.1.1.tgz#a5e654c2e5a2deb5f201d96cefbca80c0ef2f513"
   integrity sha1-peZUwuWi3rXyAdls77yoDA7y9RM=
 
-jsdoctypeparser@^8.0.0:
-  version "8.0.0"
-  resolved "https://registry.yarnpkg.com/jsdoctypeparser/-/jsdoctypeparser-8.0.0.tgz#a04a944539d3f86e30040c1ece6f6730f865f81a"
-  integrity sha512-eLCs6s4JqN8TjFJfgdiLHRvogLhOAJz+5RIA2FtoMe6ZDyuvghvppnlIToqAEnVbxRqLMrfnNXpW8FpmR6IMBw==
+jsdoctypeparser@^9.0.0:
+  version "9.0.0"
+  resolved "https://registry.yarnpkg.com/jsdoctypeparser/-/jsdoctypeparser-9.0.0.tgz#8c97e2fb69315eb274b0f01377eaa5c940bd7b26"
+  integrity sha512-jrTA2jJIL6/DAEILBEh2/w9QxCuwmvNXIry39Ay/HVfhE3o2yVV0U44blYkqdHA/OKloJEqvJy0xU+GSdE2SIw==
 
 jsesc@^2.5.1:
   version "2.5.2"
@@ -3610,10 +3615,10 @@ mkdirp@^0.5.3:
   dependencies:
     minimist "^1.2.5"
 
-[email protected].0:
-  version "8.1.0"
-  resolved "https://registry.yarnpkg.com/mocha/-/mocha-8.1.0.tgz#e651d05dcc5e42389f3412c2173ca13352a8bacd"
-  integrity sha512-sI0gaI1I/jPVu3KFpnveWGadfe3JNBAENqgTUPgLZAUppu725zS2mrVztzAgIR8DUscuS4doEBTx9LATC+HSeA==
+[email protected].1:
+  version "8.1.1"
+  resolved "https://registry.yarnpkg.com/mocha/-/mocha-8.1.1.tgz#1de1ba4e9a2c955d96b84e469d7540848223592d"
+  integrity sha512-p7FuGlYH8t7gaiodlFreseLxEmxTgvyG9RgPHODFPySNhwUehu8NIb0vdSt3WFckSneswZ0Un5typYcWElk7HQ==
   dependencies:
     ansi-colors "4.1.1"
     browser-stdout "1.3.1"
-Original file line number
+Diff line change
@@ Expand Up / @@ -2,6 +2,7 @@ Change Log @@
     v1.10.0
     ---
+    * **Feature:** Optional chaining support!
     * Improved `disableConsoleOutput` template. https://github.com/javascript-obfuscator/javascript-obfuscator/issues/691
     v1.9.0
@@ Expand Down @@