Updated readme for BigInt literals support

README.md

@@ -998,6 +998,12 @@ No. JSX support isn't planned.
 
 See: [`Kind of variables`](#kind-of-variables)
 
+### Why I got `null` value instead of `BigInt` number?
+
+`BigInt` obfuscation works correctly only in environments that support `BigInt` values. See [ESTree spec](https://github.com/estree/estree/blob/master/es2020.md#bigintliteral)
+
+See: [`Kind of variables`](#kind-of-variables)
+
 ## Backers
 
 Support us with a monthly donation and help us continue our activities. [[Become a backer](https://opencollective.com/javascript-obfuscator#backer)]

package.json

@@ -55,7 +55,7 @@
     "@types/mkdirp": "1.0.0",
     "@types/mocha": "7.0.2",
     "@types/multimatch": "4.0.0",
-    "@types/node": "13.13.2",
+    "@types/node": "13.13.4",
     "@types/rimraf": "3.0.0",
     "@types/sinon": "9.0.0",
     "@types/string-template": "1.0.2",
@@ -69,10 +69,10 @@
     "eslint-plugin-jsdoc": "24.0.0",
     "eslint-plugin-no-null": "1.0.2",
     "eslint-plugin-prefer-arrow": "1.2.0",
-    "eslint-plugin-unicorn": "18.0.1",
+    "eslint-plugin-unicorn": "19.0.1",
     "fork-ts-checker-notifier-webpack-plugin": "2.0.0",
     "fork-ts-checker-webpack-plugin": "4.1.3",
-    "mocha": "7.1.1",
+    "mocha": "7.1.2",
     "nyc": "15.0.1",
     "pjson": "1.0.9",
     "pre-commit": "1.2.2",

src/declarations/ESTree.d.ts

@@ -30,17 +30,15 @@ declare module 'estree' {
 
     interface SimpleLiteral extends BaseNode {
         metadata?: LiteralNodeMetadata;
+        'x-verbatim-property'?: escodegen.XVerbatimProperty;
     }
 
-    interface RegExpLiteral extends BaseNode {
-        metadata?: LiteralNodeMetadata;
-    }
-
-    interface SimpleLiteral extends BaseNode {
-        'x-verbatim-property'?: escodegen.XVerbatimProperty;
+    interface BigIntLiteral extends SimpleLiteral {
+        bigint: string;
     }
 
     interface RegExpLiteral extends BaseNode {
+        metadata?: LiteralNodeMetadata;
         'x-verbatim-property'?: escodegen.XVerbatimProperty;
     }
 }

src/node/NodeGuards.ts

@@ -56,6 +56,14 @@ export class NodeGuards {
         return node.type === NodeType.AwaitExpression;
     }
 
+    /**
+     * @param {Node} node
+     * @returns {boolean}
+     */
+    public static isBigIntLiteralNode (node: ESTree.Node): node is ESTree.BigIntLiteral {
+        return NodeGuards.isLiteralNode(node) && !!(<ESTree.BigIntLiteral>node).bigint;
+    }
+
     /**
      * @param {Node} node
      * @returns {boolean}

test/dev/dev.ts

@@ -7,7 +7,7 @@ import { NO_ADDITIONAL_NODES_PRESET } from '../../src/options/presets/NoCustomNo
 
     let obfuscatedCode: string = JavaScriptObfuscator.obfuscate(
         `
-            var foo = 'abc';
+            var foo = 10n;
         `,
         {
             ...NO_ADDITIONAL_NODES_PRESET,

yarn.lock

@@ -364,10 +364,10 @@
   resolved "https://registry.yarnpkg.com/@types/node/-/node-13.9.3.tgz#6356df2647de9eac569f9a52eda3480fa9e70b4d"
   integrity sha512-01s+ac4qerwd6RHD+mVbOEsraDHSgUaefQlEdBbUolnQFjKwCr7luvAlEwW1RFojh67u0z4OUTjPn9LEl4zIkA==
 
-"@types/[email protected].2":
-  version "13.13.2"
-  resolved "https://registry.yarnpkg.com/@types/node/-/node-13.13.2.tgz#160d82623610db590a64e8ca81784e11117e5a54"
-  integrity sha512-LB2R1Oyhpg8gu4SON/mfforE525+Hi/M1ineICEDftqNVTyFg1aRIeGuTvXAoWHc4nbrFncWtJgMmoyRvuGh7A==
+"@types/[email protected].4":
+  version "13.13.4"
+  resolved "https://registry.yarnpkg.com/@types/node/-/node-13.13.4.tgz#1581d6c16e3d4803eb079c87d4ac893ee7501c2c"
+  integrity sha512-x26ur3dSXgv5AwKS0lNfbjpCakGIduWU1DU91Zz58ONRWrIKGunmZBNv4P7N+e27sJkiGDsw/3fT4AtsqQBrBA==
 
 "@types/normalize-package-data@^2.4.0":
   version "2.4.0"
@@ -1890,15 +1890,16 @@ [email protected]:
   resolved "https://registry.yarnpkg.com/eslint-plugin-prefer-arrow/-/eslint-plugin-prefer-arrow-1.2.0.tgz#55f07b07e308f441c09e53a77ad12448ce1b7c29"
   integrity sha512-/iaWpfc6CsGNG/OSElmN1/hZP9WG/EnxoCIFcJHT1utRqk8FRQYoyX7xWHo2O03p/9I2dw2lSNsVOYbpfNSsZQ==
 
-eslint-plugin-unicorn@18.0.1:
-  version "18.0.1"
-  resolved "https://registry.yarnpkg.com/eslint-plugin-unicorn/-/eslint-plugin-unicorn-18.0.1.tgz#8d3285ffa57b2f6b07550b94e62228d93bf61813"
-  integrity sha512-Y4bgygek4x4ogeMcSHr6MZi3frBPZ80eIpMOsxew7jAblb53OYflpRh0an62Z6jv/fw7D3TkXauqLOBWbT9adg==
+eslint-plugin-unicorn@19.0.1:
+  version "19.0.1"
+  resolved "https://registry.yarnpkg.com/eslint-plugin-unicorn/-/eslint-plugin-unicorn-19.0.1.tgz#05eef02f33426b8aa4f21cd5e4785b456335b85b"
+  integrity sha512-fu0/h5mHXfBC6EkA3i2vCjsfC8j53+T9txGhNL4fpxJ+1JKsUKfv+tmXDgy0XnLHhFjnOZp4tRWJWbcykeIP2Q==
   dependencies:
     ci-info "^2.0.0"
     clean-regexp "^1.0.0"
     eslint-ast-utils "^1.1.0"
     eslint-template-visitor "^1.1.0"
+    eslint-utils "^2.0.0"
     import-modules "^2.0.0"
     lodash "^4.17.15"
     read-pkg-up "^7.0.1"
@@ -3520,10 +3521,10 @@ mixin-deep@^1.2.0:
     for-in "^1.0.2"
     is-extendable "^1.0.1"
 
-[email protected].3, mkdirp@^0.5.1:
-  version "0.5.3"
-  resolved "https://registry.yarnpkg.com/mkdirp/-/mkdirp-0.5.3.tgz#5a514b7179259287952881e94410ec5465659f8c"
-  integrity sha512-P+2gwrFqx8lhew375MQHHeTlY8AuOJSrGf0R5ddkEndUkmwpgUob/vQuBD1V22/Cw1/lJr4x+EjllSezBThzBg==
+[email protected].5:
+  version "0.5.5"
+  resolved "https://registry.yarnpkg.com/mkdirp/-/mkdirp-0.5.5.tgz#d91cefd62d1436ca0f41620e251288d420099def"
+  integrity sha512-NKmAlESf6jMGym1++R0Ra7wvhV+wFW63FaSOFPwRahvea0gMUcGUhVeAg/0BC0wiv9ih5NYPB1Wn1UEI1/L+xQ==
   dependencies:
     minimist "^1.2.5"
 
@@ -3532,17 +3533,24 @@ [email protected]:
   resolved "https://registry.yarnpkg.com/mkdirp/-/mkdirp-1.0.4.tgz#3eb5ed62622756d79a5f0e2a221dfebad75c2f7e"
   integrity sha512-vVqVZQyf3WLx2Shd0qJ9xuvqgAyKPLAiqITEtqW0oIUjzo3PePDd6fW9iFz30ef7Ysp/oiWqbhszeGWW2T6Gzw==
 
+mkdirp@^0.5.1:
+  version "0.5.3"
+  resolved "https://registry.yarnpkg.com/mkdirp/-/mkdirp-0.5.3.tgz#5a514b7179259287952881e94410ec5465659f8c"
+  integrity sha512-P+2gwrFqx8lhew375MQHHeTlY8AuOJSrGf0R5ddkEndUkmwpgUob/vQuBD1V22/Cw1/lJr4x+EjllSezBThzBg==
+  dependencies:
+    minimist "^1.2.5"
+
 mkdirp@^0.5.3:
   version "0.5.4"
   resolved "https://registry.yarnpkg.com/mkdirp/-/mkdirp-0.5.4.tgz#fd01504a6797ec5c9be81ff43d204961ed64a512"
   integrity sha512-iG9AK/dJLtJ0XNgTuDbSyNS3zECqDlAhnQW4CsNxBG3LQJBbHmRX1egw39DmtOdCAqY+dKXV+sgPgilNWUKMVw==
   dependencies:
     minimist "^1.2.5"
 
-[email protected].1:
-  version "7.1.1"
-  resolved "https://registry.yarnpkg.com/mocha/-/mocha-7.1.1.tgz#89fbb30d09429845b1bb893a830bf5771049a441"
-  integrity sha512-3qQsu3ijNS3GkWcccT5Zw0hf/rWvu1fTN9sPvEd81hlwsr30GX2GcDSSoBxo24IR8FelmrAydGC6/1J5QQP4WA==
+[email protected].2:
+  version "7.1.2"
+  resolved "https://registry.yarnpkg.com/mocha/-/mocha-7.1.2.tgz#8e40d198acf91a52ace122cd7599c9ab857b29e6"
+  integrity sha512-o96kdRKMKI3E8U0bjnfqW4QMk12MwZ4mhdBTf+B5a1q9+aq2HRnj+3ZdJu0B/ZhJeK78MgYuv6L8d/rA5AeBJA==
   dependencies:
     ansi-colors "3.2.3"
     browser-stdout "1.3.1"
@@ -3557,7 +3565,7 @@ [email protected]:
     js-yaml "3.13.1"
     log-symbols "3.0.0"
     minimatch "3.0.4"
-    mkdirp "0.5.3"
+    mkdirp "0.5.5"
     ms "2.1.1"
     node-environment-flags "1.0.6"
     object.assign "4.1.0"