Error: Cannot find module '@angular-devkit/core' - after clean install

[ghost]

Versions

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Angular CLI: 1.6.4
Node: 6.11.0
OS: win32 x64
Angular: _(yup, I don't see it, but I install it 2 days ago)_
...

Repro steps

• ng new e-commerce-with-tut-ng4
• cd e-commerce-with-tut-ng-4
• ng serve (to test if works)

Observed behavior

After that I've got this ->

C:\Users\TheTanadu\Desktop\codetemp\e-commerce-with-tut-ng4>ng serve
module.js:471
    throw err;
    ^

Error: Cannot find module '@angular-devkit/core'
    at Function.Module._resolveFilename (module.js:469:15)
    at Function.Module._load (module.js:417:25)
    at Module.require (module.js:497:17)
    at require (internal/module.js:20:19)
    at Object.<anonymous> (C:\Users\TheTanadu\Desktop\codetemp\e-commerce-with-tut-ng4\node_modules\@angular-devkit\schematics\src\tree\virtual.js:10:16)
    at Module._compile (module.js:570:32)
    at Object.Module._extensions..js (module.js:579:10)
    at Module.load (module.js:487:32)
    at tryModuleLoad (module.js:446:12)
    at Function.Module._load (module.js:438:3)

After all I came here but when I wanted to use ng --version in this path I've got same error like that what is up and I had to go cd .. and then use ng -v

Desired behavior

I wanted to see local server

Mention any other details that might be useful (optional)

Windows 10

[LarsMengel]

I struggled with the same problem just a minute ago. My project was generated using the v 1.6.0 of angular-cli.

1. npm update -g @angular/cli
2. editing my package.json changing the line
   "@angular/cli": "1.6.0",
   to
   "@angular/cli": "^1.6.0",
3. npm update
   did the trick.

[ghost]

gosh thank you @LarsMengel :D That did it.

[elvirdolic]

I have the same issue with version 1.6.4. @LarsMengle this works because latest patch version is used 1.6.5. My problem is that 1.6.5 increased the prod build from 9minutes to 30 minutes

[chandrarao22]

Thanks @LarsMengel , I am struggling from last 2 days. Now the issue resolved!!

[atereshkov]

The same with my 1.5.2 version.

[jlam55555]

I just started learning Angular a few days ago and this came up for the first time just now. Thanks @LarsMengel !

[brianjb-lfl]

Thank you @LarsMengel! Just ran into the same thing with 1.6.4. Solution worked like a charm.

[jadeite100]

I am using angular 1.6.5 for cli.
In the examples from angular documentation:
https://angular.io/tutorial/toh-pt6

In my package.json I change

original:

"@angular/cli": "1.5.0",

new:

"@angular/cli": "^1.5.0",

What does the "^" do exactly?

[jlam55555]

@jadeite100: Check out this link.

Excerpt:

So if you see ~1.0.2 it means to install version 1.0.2 or the latest patch version such as 1.0.4. If you see ^1.0.2 it means to install version 1.0.2 or the latest minor or patch version such as 1.1.0.

[samu1997]

Thank you @LarsMengel.

[ganeshanr12]

@LarsMengel. Thanks alot, Its works for me..

[ghost]

@LarsMengel thank you very much. Was stuck few hours this morning trying to do this with VSTS

[kkajdd]

Was this issue from yesterday onwards because we do see that this error is poping up suddenly from today?

[LarsMengel]

Seems so. I suspect for some reasons "angular-devkit/core" hasn´t been downloaded during the "ng new" process. Updating all the packages did the trick. Would be interesting to know the reason.

[kkajdd]

Yes for us just updating @angular/cli did the trick

[psmyrdek]

Solved by updating to 1.6.5

[jadeite100]

Does anybody have the link to download the code for the book?
I brought the "ng-book: The Complete Guide to Angular 4 " on amazon.com but I can't see any link to download the code for the book?

[Dagonium]

Dude, I just wanted to thank you. I faced this similar error using CLI version 1.6.4, but using your instructions and updating to CLI 1.6.5, the error was gone and I got successful compilation. Thank you, sir!

[lawmbass]

Thanks @LarsMengel that solution worked out for me. 👍

[gerrymcdonnell]

thanks @LarsMengel had same problem and that fixed it.

[tienthanhjlw]

Only need run 👍 :
npm i -D @angular-devkit/core

[adil-boukdair]

@tienthanhjlw solution fixed the issue, I am using CLI 1.6.4

[raphaelbluteau]

@tienthanhjlw fixed for me too, I am using v1.6.3

[gerrymcdonnell]

@tienthanhjlw yes that worked too!

[bobbypulpel]

@tienthanhjlw Thanks, it worked for me!

[aman119]

Thank you @LarsMengel. It worked for me

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