我的项目在package.json中使用angularfire 2.0.0-beta.0 ......
"angularfire2": "^2.0.0-beta.0"
...但是在npm install之后我收到有关angularfire 2.0.0-beta.2的npm警告：
npm WARN angularfire2@2.0.0-beta.2 requires a peer of @angular/core@2.0.0-rc.2 but none was installed.
npm WARN angularfire2@2.0.0-beta.2 requires a peer of @angular/platform-browser@2.0.0-rc.2 but none was installed.
npm WARN angularfire2@2.0.0-beta.2 requires a peer of @angular/common@2.0.0-rc.2 but none was installed.
npm WARN angularfire2@2.0.0-beta.2 requires a peer of @angular/compiler@2.0.0-rc.2 but none was installed.
npm WARN angularfire2@2.0.0-beta.2 requires a peer of @angular/platform-browser-dynamic@2.0.0-rc.2 but none was installed.
npm WARN angularfire2@2.0.0-beta.2 requires a peer of firebase@^3.0.3 but none was installed.
我看了node_modules/angularfire2，其package.json看起来像这样（注意它提到了2.0.0-beta.0和2.0.0-beta.2）：
{
"_args": [
[
{
"raw": "angularfire2@^2.0.0-beta.0",
"scope": null,
"escapedName": "angularfire2",
"name": "angularfire2",
"rawSpec": "^2.0.0-beta.0",
"spec": ">=2.0.0-beta.0 <3.0.0",
"type": "range"
},
"/Users/nunoarruda/repos/zee-p3-app"
]
],
"_from": "angularfire2@>=2.0.0-beta.0 <3.0.0",
"_id": "angularfire2@2.0.0-beta.2",
"_inCache": true,
"_installable": true,
"_location": "/angularfire2",
"_nodeVersion": "5.10.1",
"_npmOperationalInternal": {
"host": "packages-16-east.internal.npmjs.com",
"tmp": "tmp/angularfire2-2.0.0-beta.2.tgz_1466557136126_0.8304361375048757"
},
"_npmUser": {
"name": "angularcore",
"email": "angular-core+npm@google.com"
},
"_npmVersion": "3.8.3",
"_phantomChildren": {},
"_requested": {
"raw": "angularfire2@^2.0.0-beta.0",
"scope": null,
"escapedName": "angularfire2",
"name": "angularfire2",
"rawSpec": "^2.0.0-beta.0",
"spec": ">=2.0.0-beta.0 <3.0.0",
"type": "range"
},
"_requiredBy": [
"/"
],
"_resolved": "https://registry.npmjs.org/angularfire2/-/angularfire2-2.0.0-beta.2.tgz",
"_shasum": "1455af597a789e6da206a6eefff87851dddb11e7",
"_shrinkwrap": null,
"_spec": "angularfire2@^2.0.0-beta.0",
"_where": "/Users/nunoarruda/repos/zee-p3-app",
"author": {
"name": "jeffbcross"
},
"bugs": {
"url": "https://github.com/angular/angularfire2/issues"
},
"dependencies": {},
"description": "<p align=\"center\"> <h1 align=\"center\">AngularFire2</h1> <p align=\"center\">The official library for Firebase and Angular 2</p> </p>",
"devDependencies": {
"conventional-changelog-cli": "^1.2.0",
"es6-module-loader": "^0.17.10",
"es6-shim": "^0.35.0",
"firebase-server": "^0.5.2",
"gulp": "^3.9.0",
"gulp-jasmine": "^2.2.1",
"gulp-typescript": "^2.10.0",
"http-server": "^0.8.5",
"jasmine": "^2.4.1",
"jasmine-core": "^2.4.1",
"json": "^9.0.3",
"karma": "^0.13.19",
"karma-chrome-launcher": "^0.2.2",
"karma-firefox-launcher": "^0.1.7",
"karma-jasmine": "^0.3.6",
"karma-mocha-reporter": "^2.0.2",
"karma-systemjs": "^0.10.0",
"parse5": "^1.3.2",
"protractor": "3.0.0",
"reflect-metadata": "0.1.2",
"systemjs": "^0.19.16",
"systemjs-builder": "^0.15.7",
"traceur": "0.0.96",
"tsd": "^0.6.5",
"typedoc": "github:jeffbcross/typedoc",
"typescript": "^1.8.10",
"typings": "^0.6.2",
"zone.js": "^0.6.6"
},
"directories": {},
"dist": {
"shasum": "1455af597a789e6da206a6eefff87851dddb11e7",
"tarball": "https://registry.npmjs.org/angularfire2/-/angularfire2-2.0.0-beta.2.tgz"
},
"homepage": "https://github.com/angular/angularfire2#readme",
"jsnext:main": "./es6/angularfire2.js",
"keywords": [
"angular2",
"angular",
"firebase"
],
"license": "MIT",
"main": "./angularfire2.js",
"maintainers": [
{
"name": "angularcore",
"email": "angular-core+npm@google.com"
},
{
"name": "davideast",
"email": "dceast@gmail.com"
},
{
"name": "jeffbcross",
"email": "middlefloor@gmail.com"
}
],
"name": "angularfire2",
"optionalDependencies": {},
"peerDependencies": {
"@angular/core": "2.0.0-rc.2",
"@angular/platform-browser": "2.0.0-rc.2",
"@angular/common": "2.0.0-rc.2",
"@angular/compiler": "2.0.0-rc.2",
"@angular/platform-browser-dynamic": "2.0.0-rc.2",
"firebase": "^3.0.3",
"rxjs": "5.0.0-beta.6"
},
"readme": "ERROR: No README data found!",
"repository": {
"type": "git",
"url": "git+https://github.com/angular/angularfire2.git"
},
"scripts": {
"build": "rm -rf dist; tsc",
"build_bundle": "cp -r src angularfire2 && tsc typings/main.d.ts angularfire2.ts --rootDir . --module system -t es5 --outFile dist/bundles/angularfire2.js --moduleResolution node --emitDecoratorMetadata --experimentalDecorators",
"build_e2e": "rm -rf dist-test && npm run build && tsc -p test/ && cp test/e2e/firebase_object/index.html dist-test/e2e/firebase_object/ && cp test/e2e/firebase_list/index.html dist-test/e2e/firebase_list/ && cp test/e2e/auth/index.html dist-test/e2e/auth/",
"build_npm": "rm -rf dist && tsc -p tsconfig.publish.es5.json && tsc -p tsconfig.publish.es6.json",
"changelog": "conventional-changelog -p angular -i CHANGELOG.md -s -r 1",
"docs": "typedoc --out docs/api/ --module commonjs --mode modules --name AngularFire2 src",
"e2e_test": "webdriver-manager update && npm run build_e2e && protractor",
"postbuild_npm": "cp manual_typings/firebase3/firebase3.d.ts package.json README.md .npmignore dist/ && npm run rewrite_npm_package",
"rewrite_npm_package": "node --harmony_destructuring tools/rewrite-published-package.js",
"test": "npm run build; karma start"
},
"typings": "angularfire2.d.ts",
"version": "2.0.0-beta.2"
}
关于这里的问题有什么想法吗？
这个完全相同的项目与这个完全相同的代码在2个月前工作正常。我正在使用Node v6.3.1，npm v3.10.6和Mac OS X El Capitan。
答案 0 :(得分：1)
安装了beta.2版本是因为package.json - ^2.0.0-beta.0中的semver是caret range且2.0.0-beta.2满足该范围。
上次使用npm install执行package.json时，版本2.0.0-beta.0可能是最新发布的版本。
随着2.0.0-beta.2的发布，您将安装它，因为它是最新发布的包，它满足您正在使用的semver范围。
如果您特别希望安装2.0.0-beta.0，请从范围中删除插入符号：
"angularfire2": "2.0.0-beta.0"