The package rxjs does not satisfy its siblings' peerDependencies requirements - node.js

Question

Upon doing npm install, I encountered the error:
npm ERR! Windows_NT 6.1.7601
npm ERR! argv "c:\\Program Files\\nodejs\\node.exe" "c:\\Program Files\\nodejs\\node_modules\\npm\\bin\\npm-cli.js" "install"
npm ERR! node v0.12.4
npm ERR! npm v2.10.1
npm ERR! code EPEERINVALID
npm ERR! peerinvalid The package rxjs does not satisfy its siblings' peerDependencies requirements!
npm ERR! peerinvalid Peer #angular/core#2.0.0-rc.4 wants rxjs#5.0.0-beta.6
npm ERR! peerinvalid Peer angular2#2.0.0-beta.15 wants rxjs#5.0.0-beta.2
npm ERR! peerinvalid Peer #angular/router#3.0.0-beta.2 wants rxjs#5.0.0-beta.6
npm ERR! peerinvalid Peer #angular/http#2.0.0-rc.4 wants rxjs#5.0.0-beta.6
npm ERR! Please include the following file with any support request:
npm ERR! c:\GIT\mas\Rapid\factory\npm-debug.log
Here's the package.json:
{
"name": "sdk",
"version": "1.0.0",
"description": "",
"main": "index.js",
"scripts": {
"postinstall": "typings install && bower install --production && jspm install && node src/tools/updateDependencies.js && npm run bundle-dep",
"_jspm": "jspm install",
"_postjspm": "node src/tools/updateDependencies.js && npm run bundle-dep",
"bundle-dep": "jspm bundle \"src - [src/**/*] - [components/**/*]\" www/bundle.js",
"start": "node dev-server.js"
},
"author": "",
"license": "ISC",
"dependencies": {},
"devDependencies": {
"#angular/common": "2.0.0-rc.4",
"#angular/compiler": "2.0.0-rc.4",
"#angular/core": "2.0.0-rc.4",
"#angular/forms": "0.2.0",
"#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",
"bower": "^1.7.9",
"chokidar-socket-emitter": "^0.3.1",
"express": "^4.13.4",
"jspm": "^0.17.0-beta.12",
"open": "0.0.5",
"rxjs": "5.0.0-beta.2",
"spdy": "^3.2.3",
"typings": "^0.7.12"
},
"jspm": {
"name": "sdk",
"directories": {
"lib": "src"
},
"dependencies": {
"#angular/forms": "npm:#angular/forms#^0.2.0",
"#angular/http": "npm:#angular/http#^2.0.0-rc.4",
"#angular/router": "npm:#angular/router#^3.0.0-beta.2",
"core-js": "npm:core-js#^2.4.1",
"es6-shim": "github:es-shims/es6-shim#^0.35.0",
"json": "github:systemjs/plugin-json#^0.1.0",
"systemjs-hot-reloader": "github:capaj/systemjs-hot-reloader#^0.5.6"
},
"devDependencies": {
"os": "github:jspm/nodelibs-os#^0.2.0-alpha",
"plugin-typescript": "github:frankwallis/plugin-typescript#^4.0.5"
},
"peerDependencies": {
"#angular/common": "npm:#angular/common#^2.0.0-rc.4",
"#angular/compiler": "npm:#angular/compiler#^2.0.0-rc.4",
"#angular/core": "npm:#angular/core#^2.0.0-rc.4",
"#angular/platform-browser": "npm:#angular/platform-browser#^2.0.0-rc.4",
"#angular/platform-browser-dynamic": "npm:#angular/platform-browser-dynamic#^2.0.0-rc.4",
"assert": "github:jspm/nodelibs-assert#^0.2.0-alpha",
"fs": "github:jspm/nodelibs-fs#^0.2.0-alpha",
"net": "github:jspm/nodelibs-net#^0.2.0-alpha",
"path": "github:jspm/nodelibs-path#^0.2.0-alpha",
"process": "github:jspm/nodelibs-process#^0.2.0-alpha",
"reflect-metadata": "npm:reflect-metadata#0.1.2",
"rxjs": "npm:rxjs#5.0.0-beta.6",
"tty": "github:jspm/nodelibs-tty#^0.2.0-alpha",
"util": "github:jspm/nodelibs-util#^0.2.0-alpha",
"zone.js": "npm:zone.js#^0.6.6"
},
"overrides": {
"npm:#angular/common#2.0.0-rc.4": {
"meta": {
"src/*.js": {
"deps": [
"reflect-metadata",
"zone.js"
]
}
}
},
"npm:#angular/compiler#2.0.0-rc.4": {
"meta": {
"src/*.js": {
"deps": [
"reflect-metadata",
"zone.js"
]
}
}
},
"npm:#angular/core#2.0.0-rc.4": {
"meta": {
"src/*.js": {
"deps": [
"reflect-metadata",
"zone.js"
]
}
}
},
"npm:#angular/http#2.0.0-rc.4": {
"meta": {
"src/*.js": {
"deps": [
"reflect-metadata",
"zone.js"
]
}
}
},
"npm:#angular/platform-browser-dynamic#2.0.0-rc.4": {
"meta": {
"src/*.js": {
"deps": [
"reflect-metadata",
"zone.js"
]
}
}
},
"npm:#angular/platform-browser#2.0.0-rc.4": {
"meta": {
"src/*.js": {
"deps": [
"reflect-metadata",
"zone.js"
]
}
}
},
"npm:debug#2.2.0": {
"main": "browser.js",
"jspmNodeConversion": false,
"format": "cjs",
"map": {
"./browser.js": {
"node": "./node.js"
},
"fs": "#node/fs",
"net": "#node/net",
"tty": "#node/tty",
"util": "#node/util"
}
},
"npm:ms#0.7.1": {
"jspmNodeConversion": false,
"format": "cjs"
},
"npm:reflect-metadata#0.1.2": {
"map": {
"crypto": "#empty"
}
},
"npm:typescript#1.8.9": {
"browser": {},
"map": {
"buffer": "#empty",
"child_process": "#empty",
"fs": "#empty",
"path": "#empty",
"process": "#empty",
"readline": "#empty"
}
}
}
}
}
I tried upgrading "rxjs": "5.0.0-beta.2" to "rxjs": "5.0.0-beta.6" under devDependencies, but it gave me:
npm ERR! peerinvalid The package rxjs does not satisfy its siblings' peerDependencies requirements!
npm ERR! peerinvalid Peer angular2#2.0.0-beta.15 wants rxjs#5.0.0-beta.2
npm ERR! peerinvalid Peer #angular/core#2.0.0-rc.4 wants rxjs#5.0.0-beta.6
npm ERR! peerinvalid Peer #angular/http#2.0.0-rc.4 wants rxjs#5.0.0-beta.6
npm ERR! peerinvalid Peer #angular/router#3.0.0-beta.2 wants rxjs#5.0.0-beta.6

Answer 1

There are actually two versions of Angular 2 installed in this project. Old (angular2) and new (#angular).
So I uninstalled the old one by this command:
npm uninstall angular2
then retried:
npm install
then:
npm start