{
  "private": true,
  "dependencies": {
    "babel-cli": "*",
    "babel-plugin-transform-es2015-arrow-functions": "latest",
    "babel-plugin-transform-es2015-block-scoping": "latest",
    "babel-plugin-transform-es2015-parameters": "latest",
    "babel-plugin-transform-es2015-shorthand-properties": "latest",
    "csso": "latest",
    "csso-cli": "latest",
    "gulp": "^4.0",
    "gulp-concat": "latest",
    "gulp-connect": "latest",
    "gulp-sourcemaps": "latest",
    "html-minifier": "latest",
    "minimist": "latest",
    "mo3place": "latest",
    "node-sass": "latest",
    "through2": "latest",
    "uglify-es": "latest"
  }
}

{
  "private": true,
  "dependencies": {
    "csso": "latest",
    "csso-cli": "latest",
    "gulp": "latest",
    "gulp-concat": "latest",
    "gulp-connect": "latest",
    "gulp-sourcemaps": "latest",
    "html-minifier": "latest",
    "minimist": "latest",
    "mo3place": "latest",
    "node-sass": "latest",
    "through2": "latest",
    "uglify-es": "latest"
  }
}

Remove babel and update Gulp to 4.0.2
Remove babel and update Gulp to 4.0.2
