npm start failed with error TS2305: Module '"{folder path}/node_modules/@angular/core/index"' has no exported member 'Component'.

Hi I am facing an issue while starting angular\quickstart . if i try after deleting app folder, then npm start is running the lite-server.

following are the version details. node -v = v6.3.1 npm -v = 3.10.5 tsc -v Version 1.8.10 typings -v 1.3.2

E:\Work\angularjs\1ng2-myproj1>npm start

angular2-quickstart@1.0.0 start E:\Work\angularjs\1ng2-myproj1 tsc && concurrently “tsc -w” “lite-server”

app/app.component.ts(1,10): error TS2305: Module ‘“E:/Work/angularjs/1ng2-myproj1/node_modules/@angular/core/index”’ has no exported member ‘Component’. node_modules/@angular/core/index.d.ts(13,15): error TS2307: Cannot find module ‘./src/metadata’. node_modules/@angular/core/index.d.ts(14,15): error TS2307: Cannot find module ‘./src/util’. node_modules/@angular/core/index.d.ts(15,15): error TS2307: Cannot find module ‘./src/di’. …

other observations There is index.js file is available in “node_modules/@angular/core/index”. src folder is NOT available in “node_modules/@angular/core/” src folder is available “node_modules/@angular/core/esm”

E:\Work\angularjs\1ng2-myproj1\npm-debug.log 0 info it worked if it ends with ok 1 verbose cli [ ‘C:\Program Files\nodejs\node.exe’, 1 verbose cli ‘C:\Users\jobyj\AppData\Roaming\npm\node_modules\npm\bin\npm-cli.js’, 1 verbose cli ‘start’ ] 2 info using npm@3.10.5 3 info using node@v6.3.1 4 verbose run-script [ ‘prestart’, ‘start’, ‘poststart’ ] 5 info lifecycle angular2-quickstart@1.0.0~prestart: angular2-quickstart@1.0.0 6 silly lifecycle angular2-quickstart@1.0.0~prestart: no script for prestart, continuing 7 info lifecycle angular2-quickstart@1.0.0~start: angular2-quickstart@1.0.0 8 verbose lifecycle angular2-quickstart@1.0.0~start: unsafe-perm in lifecycle true 9 verbose lifecycle angular2-quickstart@1.0.0~start: PATH: C:\Users\jobyj\AppData\Roaming\npm\node_modules\npm\bin\node-gyp-bin;E:\Work\angularjs\1ng2-myproj1\node_modules.bin;C:\Program Files\nodejs;C:\Users\jobyj\AppData\Roaming\npm;C:\Program Files\nodejs;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0;C:\Users\jobyj.dnx\bin;C:\Program Files\Microsoft DNX\Dnvm;C:\Program Files\Microsoft SQL Server\130\Tools\Binn;C:\Program Files\Git\cmd;C:\Program Files\nodejs;C:\Users\jobyj\AppData\Roaming\npm 10 verbose lifecycle angular2-quickstart@1.0.0~start: CWD: E:\Work\angularjs\1ng2-myproj1 11 silly lifecycle angular2-quickstart@1.0.0~start: Args: [ ‘/d /s /c’, 'tsc && concurrently “tsc -w” “lite-server” ’ ] 12 silly lifecycle angular2-quickstart@1.0.0~start: Returned: code: 2 signal: null 13 info lifecycle angular2-quickstart@1.0.0~start: Failed to exec start script 14 verbose stack Error: angular2-quickstart@1.0.0 start: tsc && concurrently "tsc -w" "lite-server" 14 verbose stack Exit status 2 14 verbose stack at EventEmitter.<anonymous> (C:\Users\jobyj\AppData\Roaming\npm\node_modules\npm\lib\utils\lifecycle.js:242:16) 14 verbose stack at emitTwo (events.js:106:13) 14 verbose stack at EventEmitter.emit (events.js:191:7) 14 verbose stack at ChildProcess.<anonymous> (C:\Users\jobyj\AppData\Roaming\npm\node_modules\npm\lib\utils\spawn.js:40:14) 14 verbose stack at emitTwo (events.js:106:13) 14 verbose stack at ChildProcess.emit (events.js:191:7) 14 verbose stack at maybeClose (internal/child_process.js:852:16) 14 verbose stack at Process.ChildProcess._handle.onexit (internal/child_process.js:215:5) 15 verbose pkgid angular2-quickstart@1.0.0 16 verbose cwd E:\Work\angularjs\1ng2-myproj1 17 error Windows_NT 10.0.10586 18 error argv “C:\Program Files\nodejs\node.exe” “C:\Users\jobyj\AppData\Roaming\npm\node_modules\npm\bin\npm-cli.js” “start” 19 error node v6.3.1 20 error npm v3.10.5 21 error code ELIFECYCLE 22 error angular2-quickstart@1.0.0 start: tsc && concurrently "tsc -w" "lite-server" 22 error Exit status 2 23 error Failed at the angular2-quickstart@1.0.0 start script 'tsc && concurrently “tsc -w” “lite-server” '. 23 error Make sure you have the latest version of node.js and npm installed. 23 error If you do, this is most likely a problem with the angular2-quickstart package, 23 error not with npm itself. 23 error Tell the author that this fails on your system: 23 error tsc && concurrently “tsc -w” “lite-server” 23 error You can get information on how to open an issue for this project with: 23 error npm bugs angular2-quickstart 23 error Or if that isn’t available, you can get their info via: 23 error npm owner ls angular2-quickstart 23 error There is likely additional logging output above. 24 verbose exit [ 1, true ]

[dmotorny]

Try to install:

"rxjs": "^6.0.0",
"rxjs-compat": "^6.0.0"

I had the same errors by migration from Angular 5.2.10 to 6.0.0 and It has solved the problem. Here you’ll find more information: https://github.com/ReactiveX/rxjs/blob/master/MIGRATION.md Good Luck!)

[filipesilva]

Hm. Your error seems to indicate some problem during the npm install. It’s basically saying that one of your libs is broken (in this case, angular itself).

Can you delete node_modules and do npm install again? If that’s the problem, it should fix it.