webpackconfig.js comparison between webpacker6-rc1 and webpacker5.4.2

webpackconfig-from-webpacker5.4.2.js

{
  "mode": "development",
  "output": {
    "filename": "js/[name]-[contenthash].js",
    "chunkFilename": "js/[name]-[contenthash].chunk.js",
    "hotUpdateChunkFilename": "js/[id]-[hash].hot-update.js",
    "path": "/Users/willnet/tmp/webpacker5/public/packs",
    "publicPath": "/packs/"
  },
  "resolve": {
    "extensions": [
      ".mjs",
      ".js",
      ".sass",
      ".scss",
      ".css",
      ".module.sass",
      ".module.scss",
      ".module.css",
      ".png",
      ".svg",
      ".gif",
      ".jpeg",
      ".jpg"
    ],
    "plugins": [
      {
        "topLevelLoader": {}
      }
    ],
    "modules": [
      "/Users/willnet/tmp/webpacker5/app/javascript",
      "node_modules"
    ]
  },
  "resolveLoader": {
    "modules": [
      "node_modules"
    ],
    "plugins": [
      {}
    ]
  },
  "node": {
    "dgram": "empty",
    "fs": "empty",
    "net": "empty",
    "tls": "empty",
    "child_process": "empty"
  },
  "devtool": "cheap-module-source-map",
  "entry": {
    "application": "/Users/willnet/tmp/webpacker5/app/javascript/packs/application.js"
  },
  "module": {
    "strictExportPresence": true,
    "rules": [
      {
        "test": {},
        "use": [
          {
            "loader": "file-loader",
            "options": {
              "esModule": false,
              "context": "app/javascript"
            }
          }
        ]
      },
      {
        "test": {},
        "use": [
          {
            "loader": "style-loader"
          },
          {
            "loader": "css-loader",
            "options": {
              "sourceMap": true,
              "importLoaders": 2,
              "modules": false
            }
          },
          {
            "loader": "postcss-loader",
            "options": {
              "config": {
                "path": "/Users/willnet/tmp/webpacker5"
              },
              "sourceMap": true
            }
          }
        ],
        "sideEffects": true,
        "exclude": {}
      },
      {
        "test": {},
        "use": [
          {
            "loader": "style-loader"
          },
          {
            "loader": "css-loader",
            "options": {
              "sourceMap": true,
              "importLoaders": 2,
              "modules": false
            }
          },
          {
            "loader": "postcss-loader",
            "options": {
              "config": {
                "path": "/Users/willnet/tmp/webpacker5"
              },
              "sourceMap": true
            }
          },
          {
            "loader": "sass-loader",
            "options": {
              "sourceMap": true,
              "implementation": {
                "info": "dart-sass\t1.38.0\t(Sass Compiler)\t[Dart]\ndart2js\t2.13.4\t(Dart Compiler)\t[Dart]",
                "types": {},
                "NULL": {},
                "TRUE": {
                  "value": true
                },
                "FALSE": {
                  "value": false
                }
              },
              "sassOptions": {
                "includePaths": []
              }
            }
          }
        ],
        "sideEffects": true,
        "exclude": {}
      },
      {
        "test": {},
        "use": [
          {
            "loader": "style-loader"
          },
          {
            "loader": "css-loader",
            "options": {
              "sourceMap": true,
              "importLoaders": 2,
              "modules": {
                "localIdentName": "[name]__[local]___[hash:base64:5]"
              }
            }
          },
          {
            "loader": "postcss-loader",
            "options": {
              "config": {
                "path": "/Users/willnet/tmp/webpacker5"
              },
              "sourceMap": true
            }
          }
        ],
        "sideEffects": false,
        "include": {}
      },
      {
        "test": {},
        "use": [
          {
            "loader": "style-loader"
          },
          {
            "loader": "css-loader",
            "options": {
              "sourceMap": true,
              "importLoaders": 2,
              "modules": {
                "localIdentName": "[name]__[local]___[hash:base64:5]"
              }
            }
          },
          {
            "loader": "postcss-loader",
            "options": {
              "config": {
                "path": "/Users/willnet/tmp/webpacker5"
              },
              "sourceMap": true
            }
          },
          {
            "loader": "sass-loader",
            "options": {
              "sourceMap": true
            }
          }
        ],
        "sideEffects": false,
        "include": {}
      },
      {
        "test": {},
        "include": {},
        "exclude": {},
        "use": [
          {
            "loader": "babel-loader",
            "options": {
              "babelrc": false,
              "presets": [
                [
                  "@babel/preset-env",
                  {
                    "modules": false
                  }
                ]
              ],
              "cacheDirectory": true,
              "cacheCompression": false,
              "compact": false,
              "sourceMaps": false
            }
          }
        ]
      },
      {
        "test": {},
        "include": [
          "/Users/willnet/tmp/webpacker5/app/javascript"
        ],
        "exclude": {},
        "use": [
          {
            "loader": "babel-loader",
            "options": {
              "cacheDirectory": true,
              "cacheCompression": false,
              "compact": false
            }
          }
        ]
      }
    ]
  },
  "plugins": [
    {
      "keys": [
        // listed ENV keys
      ],
      "defaultValues": {
        // listed ENV keys and values
      }
    },
    {
      "options": {},
      "logger": {},
      "pathCache": {},
      "fsOperations": 0,
      "primed": false
    },
    {
      "options": {
        "filename": "css/[name]-[contenthash:8].css",
        "ignoreOrder": false,
        "chunkFilename": "css/[name]-[contenthash:8].chunk.css"
      }
    },
    {}
  ]
}

webpackconfig.js

{
  "mode": "development",
  "output": {
    "filename": "js/[name].js",
    "chunkFilename": "js/[name].chunk.js",
    "hotUpdateChunkFilename": "js/[id].[fullhash].hot-update.js",
    "path": "/Users/willnet/tmp/webpacker6rc1/public/packs",
    "publicPath": "/packs/"
  },
  "entry": {
    "application": "/Users/willnet/tmp/webpacker6rc1/app/packs/entrypoints/application.js"
  },
  "resolve": {
    "extensions": [
      ".js",
      ".jsx",
      ".mjs",
      ".ts",
      ".tsx",
      ".coffee"
    ],
    "modules": [
      "/Users/willnet/tmp/webpacker6rc1/app/packs",
      "node_modules"
    ],
    "plugins": [
      {
        "topLevelLoader": {}
      }
    ]
  },
  "plugins": [
    {
      "keys": [
        // listed ENV keys
      ],
      "defaultValues": {
        // listed ENV keys and values
      }
    },
    {}
  ],
  "resolveLoader": {
    "modules": [
      "node_modules"
    ],
    "plugins": [
      {}
    ]
  },
  "optimization": {
    "splitChunks": {
      "chunks": "all"
    },
    "runtimeChunk": "single"
  },
  "module": {
    "strictExportPresence": true,
    "rules": [
      {
        "test": [
          {}
        ],
        "exclude": [
          {}
        ],
        "type": "asset/source"
      },
      {
        "test": [
          {},
          {},
          {},
          {},
          {},
          {},
          {},
          {},
          {},
          {},
          {},
          {},
          {},
          {}
        ],
        "exclude": [
          {}
        ],
        "type": "asset/resource",
        "generator": {
          "filename": "static/[hash][ext][query]"
        }
      },
      {
        "test": {},
        "include": [
          "/Users/willnet/tmp/webpacker6rc1/app/packs"
        ],
        "exclude": {},
        "use": [
          {
            "loader": "/Users/willnet/tmp/webpacker6rc1/node_modules/babel-loader/lib/index.js",
            "options": {
              "cacheDirectory": true,
              "cacheCompression": false,
              "compact": false
            }
          }
        ]
      }
    ]
  },
  "devtool": "cheap-module-source-map"
}