node.js - 更新 Angular2 到最新版本

Question

我正在尝试将 Angular2 更新到最新版本候选版本 4。

我已经执行了 npm outdated 并相应地编辑了 package.json 文件。 然后我执行了失败的 npm update。我没有保存错误信息。在下文中，我用谷歌搜索并尝试了几个不同的 npm 命令。不幸的是我不记得了。

当前状态是，npm update 没有显示任何内容；所以似乎工作。 命令 npm start 启动服务器，但浏览器控制台显示多个错误。第一个是:

http://localhost:3000/node_modules/@angular/platform-browser-dynamic/platform-browser-dynamic.umd.js Failed to load resource: the server responded with a status of 404 (Not Found)

此外 npm install 显示以下警告:

typings WARN deprecated 2016-06-02: "registry:dt/core-js#0.0.0+20160317120654" is deprecated (updated, replaced or removed)
typings WARN deprecated 2016-06-22: "registry:dt/node#4.0.0+20160509154515" is deprecated (updated, replaced or removed)
typings WARN deprecated 2016-06-22: "registry:dt/jasmine#2.2.0+20160505161446" is deprecated (updated, replaced or removed)

├── core-js (global)
├── jasmine (global)
└── node (global)

npm WARN optional Skipping failed optional dependency /chokidar/fsevents:
npm WARN notsup Not compatible with your operating system or architecture: fsevents@1.0.12
npm WARN optional Skipping failed optional dependency /lite-server/browser-sync/chokidar/fsevents:
npm WARN notsup Not compatible with your operating system or architecture: fsevents@1.0.12
npm WARN @angular/core@2.0.0-rc.4 requires a peer of rxjs@5.0.0-beta.6 but none was installed.
npm WARN @angular/http@2.0.0-rc.4 requires a peer of rxjs@5.0.0-beta.6 but none was installed.
npm WARN @angular/router@3.0.0-beta.2 requires a peer of rxjs@5.0.0-beta.6 but none was installed.
npm WARN @angular/router-deprecated@2.0.0-rc.1 requires a peer of @angular/core@2.0.0-rc.1 but none was installed.
npm WARN @angular/router-deprecated@2.0.0-rc.1 requires a peer of @angular/common@2.0.0-rc.1 but none was installed.
npm WARN @angular/router-deprecated@2.0.0-rc.1 requires a peer of @angular/platform-browser@2.0.0-rc.1 but none was installed.
npm WARN angular2-in-memory-web-api@0.0.14 requires a peer of rxjs@5.0.0-beta.6 but none was installed.

package.json 相关部分目前是:

"dependencies": {
    "@angular/common": "2.0.0-rc.4",
    "@angular/compiler": "2.0.0-rc.4",
    "@angular/core": "2.0.0-rc.4",
    "@angular/http": "2.0.0-rc.4",
    "@angular/platform-browser": "2.0.0-rc.4",
    "@angular/platform-browser-dynamic": "2.0.0-rc.4",
    "@angular/router": "3.0.0-beta.2",
    "@angular/upgrade": "2.0.0-rc.4",
    "angular2-in-memory-web-api": "0.0.14",
    "angular2-uuid": "^1.0.7",
    "bootstrap": "^3.3.6",
    "core-js": "^2.4.0",
    "reflect-metadata": "^0.1.3",
    "rxjs": "5.0.0-beta.9",
    "systemjs": "0.19.31",
    "zone.js": "^0.6.12"
  },
"devDependencies": {
    "concurrently": "^2.0.0",
    "lite-server": "^2.2.0",
    "typescript": "^1.8.10",
    "typings": "^1.0.4",
    "canonical-path": "0.0.2",
    "http-server": "^0.9.0",
    "tslint": "^3.7.4",
    "lodash": "^4.11.1",
    "jasmine-core": "~2.4.1",
    "karma": "^1.1.0",
    "karma-chrome-launcher": "^1.0.1",
    "karma-cli": "^1.0.1",
    "karma-htmlfile-reporter": "^0.3.4",
    "karma-jasmine": "^1.0.2",
    "protractor": "^3.3.0",
    "rimraf": "^2.5.2"
  },

Answer 1

请按照以下步骤操作:

1. 删除 node_modules 文件夹。

2. 从 https://angular.io/guide/quickstart 获取最新的 package.json

3. 运行“npm install”命令。