use babel 7

remix-debug/package.json

@@ -26,10 +26,14 @@
     "web3": "0.20.6"
   },
   "devDependencies": {
-    "babel-eslint": "^7.1.1",
-    "babel-plugin-transform-object-assign": "^6.22.0",
-    "babel-preset-es2015": "^6.24.0",
-    "babelify": "^7.3.0",
+    "@babel/core": "^7.4.5",
+    "babel-eslint": "^10.0.0",
+    "@babel/plugin-transform-object-assign": "^7.2.0",
+    "@babel/preset-env": "^7.4.5",
+    "@babel/preset-es2015": "latest",
+    "@babel/preset-es2017": "latest",
+    "@babel/preset-stage-0": "^7.0.0",
+    "babelify": "^10.0.0",
     "notify-error": "^1.2.0",
     "solc": "^0.5.0",
     "standard": "^7.0.1",
@@ -77,7 +81,7 @@
                 }
               }
             ],
-            "transform-object-assign"
+            "module:@babel/plugin-transform-object-assign"
           ]
         }
       ],
@@ -85,7 +89,7 @@
         "babelify",
         {
           "presets": [
-            "es2015"
+            "@babel/preset-env"
           ]
         }
       ]

remix-lib/package.json

@@ -25,12 +25,14 @@
     "web3": "0.20.6"
   },
   "devDependencies": {
-    "babel-eslint": "^7.1.1",
-    "babel-plugin-transform-object-assign": "^6.22.0",
-    "babel-preset-env": "^1.6.1",
-    "babel-preset-es2015": "^6.24.0",
-    "babel-preset-stage-0": "^6.24.1",
-    "babelify": "^7.3.0",
+    "@babel/core": "^7.4.5",
+    "babel-eslint": "^10.0.0",
+    "@babel/plugin-transform-object-assign": "^7.2.0",
+    "@babel/preset-env": "^7.4.5",
+    "@babel/preset-es2015": "latest",
+    "@babel/preset-es2017": "latest",
+    "@babel/preset-stage-0": "^7.0.0",
+    "babelify": "^10.0.0",
     "standard": "^7.0.1",
     "tape": "^4.6.0"
   },
@@ -73,7 +75,7 @@
                 }
               }
             ],
-            "transform-object-assign"
+            "module:@babel/plugin-transform-object-assign"
           ]
         }
       ],
@@ -81,7 +83,7 @@
         "babelify",
         {
           "presets": [
-            "es2015"
+            "@babel/preset-env"
           ]
         }
       ]

remix-solidity/package.json

@@ -22,10 +22,14 @@
     "webworkify": "^1.2.1"
   },
   "devDependencies": {
-    "babel-eslint": "^7.1.1",
-    "babel-plugin-transform-object-assign": "^6.22.0",
-    "babel-preset-es2015": "^6.24.0",
-    "babelify": "^7.3.0",
+    "@babel/core": "^7.4.5",
+    "babel-eslint": "^10.0.0",
+    "@babel/plugin-transform-object-assign": "^7.2.0",
+    "@babel/preset-env": "^7.4.5",
+    "@babel/preset-es2015": "latest",
+    "@babel/preset-es2017": "latest",
+    "@babel/preset-stage-0": "^7.0.0",
+    "babelify": "^10.0.0",
     "standard": "^7.0.1",
     "tape": "^4.6.0"
   },
@@ -66,7 +70,7 @@
                 }
               }
             ],
-            "transform-object-assign"
+            "module:@babel/plugin-transform-object-assign"
           ]
         }
       ],
@@ -74,7 +78,7 @@
         "babelify",
         {
           "presets": [
-            "es2015"
+            "@babel/preset-env"
           ]
         }
       ]

remix-tests/package.json

@@ -60,7 +60,7 @@
     "@types/mocha": "^5.2.5",
     "@types/node": "^10.12.21",
     "@types/web3": "^1.0.18",
-    "babel-preset-es2017": "^6.24.1",
+    "@babel/preset-es2017": "latest",
     "mocha": "^5.1.0",
     "standard": "^10.0.3",
     "ts-node": "^8.0.2",