29

I have just executed the ng eject command. But now I need to revert it, and continue to use ng commands. Is it possible?

I would be grateful for any help.

peterh
  • 11,875
  • 18
  • 85
  • 108

3 Answers3

69

At https://github.com/angular/angular-cli/blob/master/packages/%40angular/cli/tasks/build.ts#L27 (current angular CLI version: 1.0.1) there is a condition:

if (config.project && config.project.ejected) {
  throw new SilentError('An ejected project cannot use the build command anymore.');
}

when you run ng-eject, package.json file is modified with new npm scripts, webpack.config.js file is added or replaced and ejected flag is added to your .angular.cli.json:

"project": {
  "name": "YOUR PROJECT NAME",
  "ejected": true
},

So, just remove "ejected" flag from your .angular.cli.json file:

or change this flag to false:

"project": {
  "name": "YOUR PROJECT NAME",
  "ejected": false
}
peterh
  • 11,875
  • 18
  • 85
  • 108
Andriy
  • 14,781
  • 4
  • 46
  • 50
  • Very helpful answer!I managed to load bootstrap this way!It seems that ng serve is not equal to npm run build & npm start – skiabox Apr 19 '17 at 13:34
  • If you do the ejection in an isolated commit you might be able to revert the change later by rolling back that commit right? – Askdesigners Apr 20 '17 at 14:51
  • actually only package.json you may want to revert, since ng eject may change your scripts section and add dev dependencies (loaders) needed for webpack. Although I noticed that running ng eject with -f flag merges old npm scripts with new added ones, but it should be checked. So, I think, that if your old npm scripts after ng eject are still in package.json and you do not care about loaders, just changing or removing "ejected" flag within *.angular.cli.json* and removing *webpack.config.js * would be enough and you may run all ng commands again. ng eject does not change any custom or core code – Andriy Apr 21 '17 at 16:33
  • It's a bit inferred above, but if you proceed later to run `ng eject` again (if needed for flags, etc.) after having set `ejected:false` you'll get an error about `project.json` and that it _must not contain a build script_. You'll need to revert the changes within the `scripts` section as well. If you lost the changes, just fire up a new project as a means to an end and copy out the `scripts` section. – atconway Jun 12 '18 at 20:42
3

With current version of angular cli you need to mark ejected:false or remove the ejected property inside file angular-cli.json file instead of package.json file

Rahul Tokase
  • 1,048
  • 9
  • 25
1

This command makes the build configuration part of your project and gets rid of Angular CLI. And also set “ejected”: true in angular-cli.json file , create new file webpack.config.js in project root, and modified run scripts in package.json.

Finally, to undo the ng-eject command it is necessary to modify the package.json file again

Angel Ferrando
  • 31
  • 3