update node modules

node_modules/escodegen/escodegen.js

@@ -99,11 +99,12 @@
         Await: 14,
         Unary: 14,
         Postfix: 15,
-        Call: 16,
-        New: 17,
-        TaggedTemplate: 18,
-        Member: 19,
-        Primary: 20
+        OptionalChaining: 16,
+        Call: 17,
+        New: 18,
+        TaggedTemplate: 19,
+        Member: 20,
+        Primary: 21
     };
 
     BinaryPrecedence = {
@@ -1871,8 +1872,14 @@
 
         CallExpression: function (expr, precedence, flags) {
             var result, i, iz;
+
             // F_ALLOW_UNPARATH_NEW becomes false.
             result = [this.generateExpression(expr.callee, Precedence.Call, E_TTF)];
+
+            if (expr.optional) {
+                result.push('?.');
+            }
+
             result.push('(');
             for (i = 0, iz = expr['arguments'].length; i < iz; ++i) {
                 result.push(this.generateExpression(expr['arguments'][i], Precedence.Assignment, E_TTT));
@@ -1885,9 +1892,20 @@
             if (!(flags & F_ALLOW_CALL)) {
                 return ['(', result, ')'];
             }
+
             return parenthesize(result, Precedence.Call, precedence);
         },
 
+        ChainExpression: function (expr, precedence, flags) {
+            if (Precedence.OptionalChaining < precedence) {
+                flags |= F_ALLOW_CALL;
+            }
+
+            var result = this.generateExpression(expr.expression, Precedence.OptionalChaining, flags);
+
+            return parenthesize(result, Precedence.OptionalChaining, precedence);
+        },
+
         NewExpression: function (expr, precedence, flags) {
             var result, length, i, iz, itemFlags;
             length = expr['arguments'].length;
@@ -1922,11 +1940,15 @@
             result = [this.generateExpression(expr.object, Precedence.Call, (flags & F_ALLOW_CALL) ? E_TTF : E_TFF)];
 
             if (expr.computed) {
+                if (expr.optional) {
+                    result.push('?.');
+                }
+
                 result.push('[');
                 result.push(this.generateExpression(expr.property, Precedence.Sequence, flags & F_ALLOW_CALL ? E_TTT : E_TFT));
                 result.push(']');
             } else {
-                if (expr.object.type === Syntax.Literal && typeof expr.object.value === 'number') {
+                if (!expr.optional && expr.object.type === Syntax.Literal && typeof expr.object.value === 'number') {
                     fragment = toSourceNodeWhenNeeded(result).toString();
                     // When the following conditions are all true,
                     //   1. No floating point
@@ -1943,7 +1965,7 @@
                         result.push(' ');
                     }
                 }
-                result.push('.');
+                result.push(expr.optional ? '?.' : '.');
                 result.push(generateIdentifier(expr.property));
             }
 
@@ -2457,8 +2479,7 @@
                 this.generateExpression(expr.source, Precedence.Assignment, E_TTT),
                 ')'
             ], Precedence.Call, precedence);
-        },
-
+        }
     };
 
     merge(CodeGenerator.prototype, CodeGenerator.Expression);

node_modules/escodegen/package.json

@@ -1,26 +1,26 @@
 {
-  "_from": "escodegen@^1.14.1",
-  "_id": "escodegen@1.14.3",
+  "_from": "escodegen@^2.0.0",
+  "_id": "escodegen@2.0.0",
   "_inBundle": false,
-  "_integrity": "sha512-qFcX0XJkdg+PB3xjZZG/wKSuT1PnQWx57+TVSjIMmILd2yC/6ByYElPwJnslDsuWuSAp4AwJGumarAAmJch5Kw==",
+  "_integrity": "sha512-mmHKys/C8BFUGI+MAWNcSYoORYLMdPzjrknd2Vc+bUsjN5bXcr8EhrNB+UTqfL1y3I9c4fw2ihgtMPQLBRiQxw==",
   "_location": "/escodegen",
   "_phantomChildren": {},
   "_requested": {
     "type": "range",
     "registry": true,
-    "raw": "escodegen@^1.14.1",
+    "raw": "escodegen@^2.0.0",
     "name": "escodegen",
     "escapedName": "escodegen",
-    "rawSpec": "^1.14.1",
+    "rawSpec": "^2.0.0",
     "saveSpec": null,
-    "fetchSpec": "^1.14.1"
+    "fetchSpec": "^2.0.0"
   },
   "_requiredBy": [
     "/jsdom"
   ],
-  "_resolved": "https://registry.npmjs.org/escodegen/-/escodegen-1.14.3.tgz",
-  "_shasum": "4e7b81fba61581dc97582ed78cab7f0e8d63f503",
-  "_spec": "escodegen@^1.14.1",
+  "_resolved": "https://registry.npmjs.org/escodegen/-/escodegen-2.0.0.tgz",
+  "_shasum": "5e32b12833e8aa8fa35e1bf0befa89380484c7dd",
+  "_spec": "escodegen@^2.0.0",
   "_where": "D:\\Projects\\minifyfromhtml\\node_modules\\jsdom",
   "bin": {
     "esgenerate": "bin/esgenerate.js",
@@ -32,7 +32,7 @@
   "bundleDependencies": false,
   "dependencies": {
     "esprima": "^4.0.1",
-    "estraverse": "^4.2.0",
+    "estraverse": "^5.2.0",
     "esutils": "^2.0.2",
     "optionator": "^0.8.1",
     "source-map": "~0.6.1"
@@ -40,10 +40,11 @@
   "deprecated": false,
   "description": "ECMAScript code generator",
   "devDependencies": {
-    "acorn": "^7.1.0",
+    "acorn": "^7.3.1",
     "bluebird": "^3.4.7",
     "bower-registry-client": "^1.0.0",
-    "chai": "^3.5.0",
+    "chai": "^4.2.0",
+    "chai-exclude": "^2.0.2",
     "commonjs-everywhere": "^0.9.7",
     "gulp": "^3.8.10",
     "gulp-eslint": "^3.0.1",
@@ -51,7 +52,7 @@
     "semver": "^5.1.0"
   },
   "engines": {
-    "node": ">=4.0"
+    "node": ">=6.0"
   },
   "files": [
     "LICENSE.BSD",
@@ -86,5 +87,5 @@
     "test": "gulp travis",
     "unit-test": "gulp test"
   },
-  "version": "1.14.3"
+  "version": "2.0.0"
 }