Fix build error in production

app/gulpfile.js

@@ -26,7 +26,7 @@ const touch = require('gulp-touch-cmd');
 const browserify = require('browserify');
 const watchify = require('watchify');
 const envify = require('envify/custom');
-const uglify = require('gulp-uglify');
+const uglify = require('gulp-uglify-es').default;
 const source = require('vinyl-source-stream');
 const buffer = require('vinyl-buffer');
 const del = require('del');

app/package-lock.json

@@ -6255,50 +6255,17 @@
         "through2": "2.0.3"
       }
     },
-    "gulp-uglify": {
+    "gulp-uglify-es": {
-      "version": "3.0.1",
+      "version": "1.0.4",
-      "resolved": "https://registry.npmjs.org/gulp-uglify/-/gulp-uglify-3.0.1.tgz",
+      "resolved": "https://registry.npmjs.org/gulp-uglify-es/-/gulp-uglify-es-1.0.4.tgz",
-      "integrity": "sha512-KVffbGY9d4Wv90bW/B1KZJyunLMyfHTBbilpDvmcrj5Go0/a1G3uVpt+1gRBWSw/11dqR3coJ1oWNTt1AiXuWQ==",
+      "integrity": "sha512-UMRufZsBmQizCYpftutaiVoLswpbzFEfY90EJLU4YlTgculeHnanb794s88TMd5tpCZVC638sAX6JrLVYTP/Wg==",
       "dev": true,
       "requires": {
-        "gulplog": "1.0.0",
+        "o-stream": "0.2.2",
-        "has-gulplog": "0.1.0",
+        "plugin-error": "1.0.1",
-        "lodash": "4.17.10",
+        "terser": "3.10.1",
-        "make-error-cause": "1.2.2",
+        "vinyl": "2.2.0",
-        "safe-buffer": "5.1.2",
-        "through2": "2.0.3",
-        "uglify-js": "3.4.6",
         "vinyl-sourcemaps-apply": "0.2.1"
-      },
-      "dependencies": {
-        "commander": {
-          "version": "2.16.0",
-          "resolved": "https://registry.npmjs.org/commander/-/commander-2.16.0.tgz",
-          "integrity": "sha512-sVXqklSaotK9at437sFlFpyOcJonxe0yST/AG9DkQKUdIE6IqGIMv4SfAQSKaJbSdVEJYItASCrBiVQHq1HQew==",
-          "dev": true
-        },
-        "safe-buffer": {
-          "version": "5.1.2",
-          "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.2.tgz",
-          "integrity": "sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g==",
-          "dev": true
-        },
-        "source-map": {
-          "version": "0.6.1",
-          "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
-          "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==",
-          "dev": true
-        },
-        "uglify-js": {
-          "version": "3.4.6",
-          "resolved": "https://registry.npmjs.org/uglify-js/-/uglify-js-3.4.6.tgz",
-          "integrity": "sha512-O1D7L6WcOzS1qW2ehopEm4cWm5yA6bQBozlks8jO8ODxYCy4zv+bR/la4Lwp01tpkYGNonnpXvUpYtrvSu8Yzg==",
-          "dev": true,
-          "requires": {
-            "commander": "2.16.0",
-            "source-map": "0.6.1"
-          }
-        }
       }
     },
     "gulp-util": {
@@ -7792,21 +7759,6 @@
         "xtend": "4.0.1"
       }
     },
-    "make-error": {
-      "version": "1.3.4",
-      "resolved": "https://registry.npmjs.org/make-error/-/make-error-1.3.4.tgz",
-      "integrity": "sha512-0Dab5btKVPhibSalc9QGXb559ED7G7iLjFXBaj9Wq8O3vorueR5K5jaE3hkG6ZQINyhA/JgG6Qk4qdFQjsYV6g==",
-      "dev": true
-    },
-    "make-error-cause": {
-      "version": "1.2.2",
-      "resolved": "https://registry.npmjs.org/make-error-cause/-/make-error-cause-1.2.2.tgz",
-      "integrity": "sha1-3wOI/NCzeBbf8KX7gQiTl3fcvJ0=",
-      "dev": true,
-      "requires": {
-        "make-error": "1.3.4"
-      }
-    },
     "make-iterator": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/make-iterator/-/make-iterator-1.0.1.tgz",
@@ -8578,6 +8530,12 @@
       "integrity": "sha1-CXtgK1NCKlIsGvuHkDGDNpQaAR0=",
       "dev": true
     },
+    "o-stream": {
+      "version": "0.2.2",
+      "resolved": "https://registry.npmjs.org/o-stream/-/o-stream-0.2.2.tgz",
+      "integrity": "sha512-V3j76KU3g/Gyl8rpdi2z72rn5zguMvTCQgAXfBe3pxEefKqXmOUOD7mvx/mNjykdxGqDVfpSoo8r+WdrkWg/1Q==",
+      "dev": true
+    },
     "oauth-sign": {
       "version": "0.8.2",
       "resolved": "https://registry.npmjs.org/oauth-sign/-/oauth-sign-0.8.2.tgz",
@@ -11177,6 +11135,41 @@
         "through2": "2.0.3"
       }
     },
+    "terser": {
+      "version": "3.10.1",
+      "resolved": "https://registry.npmjs.org/terser/-/terser-3.10.1.tgz",
+      "integrity": "sha512-GE0ShECt1/dZUZt9Kyr/IC6xXG46pTbm1C1WfzQbbnRB5LhdJlF8p5NBZ38RjspD7hEM9O5ud8aIcOFY6evl4A==",
+      "dev": true,
+      "requires": {
+        "commander": "2.17.1",
+        "source-map": "0.6.1",
+        "source-map-support": "0.5.9"
+      },
+      "dependencies": {
+        "commander": {
+          "version": "2.17.1",
+          "resolved": "https://registry.npmjs.org/commander/-/commander-2.17.1.tgz",
+          "integrity": "sha512-wPMUt6FnH2yzG95SA6mzjQOEKUU3aLaDEmzs1ti+1E9h+CsrZghRlqEM/EJ4KscsQVG8uNN4uVreUeT8+drlgg==",
+          "dev": true
+        },
+        "source-map": {
+          "version": "0.6.1",
+          "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
+          "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==",
+          "dev": true
+        },
+        "source-map-support": {
+          "version": "0.5.9",
+          "resolved": "https://registry.npmjs.org/source-map-support/-/source-map-support-0.5.9.tgz",
+          "integrity": "sha512-gR6Rw4MvUlYy83vP0vxoVNzM6t8MUXqNuRsuBmBHQDu1Fh6X015FrLdgoDKcNdkwGubozq0P4N0Q37UyFVr1EA==",
+          "dev": true,
+          "requires": {
+            "buffer-from": "1.1.0",
+            "source-map": "0.6.1"
+          }
+        }
+      }
+    },
     "text-table": {
       "version": "0.2.0",
       "resolved": "https://registry.npmjs.org/text-table/-/text-table-0.2.0.tgz",

app/package.json

@@ -64,7 +64,7 @@
     "gulp-rename": "^1.4.0",
     "gulp-stylus": "^2.7.0",
     "gulp-touch-cmd": "0.0.1",
-    "gulp-uglify": "^3.0.1",
+    "gulp-uglify-es": "^1.0.4",
     "gulp-util": "^3.0.8",
     "lodash": "^4.17.10",
     "mkdirp": "^0.5.1",