npm不会安装Firebase
我正在开发Ionic应用程序，并希望包含Firebase。 显然，这不像网页那么简单。 所以，我遵循这个教程。 在“设置应用程序”下，它说
npm install angularfire2@4.0.0-rc0 firebase --save
这给了我输出
hacker_news_app_v2@0.0.1 /home/sean/Dropbox/Programming/Ionic/hacker_news_app_v2 ├── angularfire2@4.0.0-rc0 └─┬ UNMET PEER DEPENDENCY firebase@4.1.2 ├── jsonwebtoken@7.4.1 ├── ms@2.0.0 └── safe-buffer@5.1.0 npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@^1.0.0 (node_modules/chokidar/node_modules/fsevents): npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@1.1.2: wanted {"os":"darwin","arch":"any"} (current: {"os":"linux","arch":"x64"}) npm WARN angularfire2@4.0.0-rc0 requires a peer of firebase@^3.6.6 but none was installed.
所以然后我试了
sudo npm install firebase@4.1.2
这给了我
hacker_news_app_v2@0.0.1 /home/sean/Dropbox/Programming/Ionic/hacker_news_app_v2 └── UNMET PEER DEPENDENCY firebase@4.1.2 npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@^1.0.0 (node_modules/chokidar/node_modules/fsevents): npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@1.1.2: wanted {"os":"darwin","arch":"any"} (current: {"os":"linux","arch":"x64"}) npm WARN angularfire2@4.0.0-rc0 requires a peer of firebase@^3.6.6 but none was installed. npm ERR! code 1
（为什么firebase@^3.6.6有一个插入符号？）
所以，最后，我试了一下
sudo npm install firebase@^3.6.6
这给了
- base64-url@1.3.3 node_modules/firebase/node_modules/base64-url - rsvp@3.2.1 node_modules/firebase/node_modules/rsvp hacker_news_app_v2@0.0.1 /home/sean/Dropbox/Programming/Ionic/hacker_news_app_v2 └─┬ firebase@3.9.0 invalid ├── ecdsa-sig-formatter@1.0.9 ├── jsonwebtoken@7.4.0 ├── jwa@1.1.5 ├── moment@2.18.1 ├── ms@0.7.3 └── promise-polyfill@6.0.2 npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@^1.0.0 (node_modules/chokidar/node_modules/fsevents): npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@1.1.2: wanted {"os":"darwin","arch":"any"} (current: {"os":"linux","arch":"x64"})
好的，那么我怎么解释最后一个呢？ 我怎样才能安装angularfire？
我跑sudo npm install firebase@latest和它的工作。