ng serve Angular 2的问题

Question

I have a problem with the installation of an existing angular application.

I'm trying to launch the application with the ng serve command, and this error is occurring: The "@angular/compiler-cli" package was not properly installed. Error: reflect-metadata shim is required when using class decorators The "@angular/compiler-cli" package was not properly installed. Error: reflect-metadata shim is required when using class decorators .

I've installed all the packages provided in the package.json file with the npm install command, I know they are a bit outdated, but they are still supposed to work.

These are all the dev dependencies:

"card"                             : "^1.2",
"del"                              : "latest",
"gulp"                             : "latest",
"gulp-autoprefixer"                : "latest",
"gulp-concat"                      : "latest",
"gulp-cssnano"                     : "2.x",
"gulp-eslint"                      : "latest",
"gulp-html5-lint"                  : "latest",
"gulp-htmlmin"                     : "2.x",
"gulp-imagemin"                    : "latest",
"gulp-inline-source"               : "latest",
"gulp-notify"                      : "latest",
"gulp-plumber"                     : "latest",
"gulp-rev-all"                     : "latest",
"gulp-sass"                        : "latest",
"gulp-scss-lint"                   : "latest",
"gulp-sourcemaps"                  : "2.0.0-alpha",
"gulp-svg-sprite"                  : "latest",
"gulp-tslint"                      : "4.x",
"gulp-typescript"                  : "2.x",
"gulp-uglify"                      : "latest",
"gulp-util"                        : "latest",
"merge-stream"                     : "latest",
"tslint"                           : "3.x",
"browser-sync"                     : "2.x",
"connect-history-api-fallback"     : "latest",
"typescript"                       : "1.x",
"typings"                          : "^0.8.1",
"svg4everybody"                    : "2.x",
"jquery"                           : "2.x",
"jasmine"                          : "2.x",
"semantic-ui"                      : "2.x",
"@angular/common"                  : "2.0.0-rc.1",
"@angular/compiler"                : "2.0.0-rc.1",
"@angular/compiler-cli"            : "^2.0.x",
"@angular/core"                    : "2.0.0-rc.1",
"@angular/http"                    : "2.0.0-rc.1",
"@angular/platform-browser"        : "2.0.0-rc.1",
"@angular/platform-browser-dynamic": "2.0.0-rc.1",
"@angular/router"                  : "2.0.0-rc.1",
"@angular/router-deprecated"       : "2.0.0-rc.1",
"@angular/upgrade"                 : "2.0.0-rc.1",
"@angular/cli"                     : "1.4.8",
"systemjs"                         : "0.19.27",
"es6-shim"                         : "^0.35.0",
"reflect-metadata"                 : "^0.1.3",
"rxjs"                             : "5.0.0-beta.6",
"zone.js"                          : "^0.6.12",
"angular2-in-memory-web-api"       : "0.0.7"

Anyone has an idea on how to resolve this? I'm struggling on this because I'm pretty new to Angular, any suggestion is accepted.

Thanks in advance.

Answer 1

要启用angular cli命令，必须通过此命令将其安装在节点的全局区域中

npm install -g angular-cli

Answer 2

我通过此npm install -g angular-cli@1.0.0-beta.28.3解决了（全局安装该版本的cli）