npm install creates an additional node_modules folder

[FlorianMathis]

Hi,

problem:
by installing jodit-angular there will be generated an additional node_modules folder which ends in following error: "Cannot redeclare block-schoped variable 'ngDevMode'.

solution
delete the generated node_modules folder (everything works fine then)

@xdan: Can you tell me why you locate another additional node_modules folder in your package?

[helix46]

Build gives error:
ERROR in node_modules/@angular/core/src/render3/ng_dev_mode.d.ts(9,11): error TS2451: Cannot redeclare block-scoped variable 'ngDevMode'.

[Shrewd]

In my case, using wrong angular versions made the error occur.
Angular versions must match this library version, currently 5.2.11
I used npm update to do so, and then ng-bootstrap caused errors since it now requires angular 6.
Using npm install --save @ng-bootstrap/ng-bootstrap@2.0.0 did the trick

[Iskuzer]

Build gives error:
ERROR in node_modules/@angular/core/src/render3/ng_dev_mode.d.ts(9,11): error TS2451: Cannot redeclare block-scoped variable 'ngDevMode'.
--
Same problem with angular 6

[helix46]

Work around...
I've had to delete the node_modules folder so often that I've made a script to go in package.json scripts:

"fix-jodit-node-modules": "fix-jodit-node-modules.bat",

Contents of fix-jodit-node-modules.bat (for windows of course):
IF EXIST .\node_modules\jodit-angular\node_modules (
rd .\node_modules\jodit-angular\node_modules /S /q
)

[Raiper34]

Same problem Angular 6...

[garluk]

Work around...
I've had to delete the node_modules folder so often that I've made a script to go in package.json scripts:

"fix-jodit-node-modules": "fix-jodit-node-modules.bat",

Contents of fix-jodit-node-modules.bat (for windows of course):
IF EXIST .\node_modules\jodit-angular\node_modules (
rd .\node_modules\jodit-angular\node_modules /S /q
)

This worked to me with Node.js 12.10: https://stackoverflow.com/a/57866165

In your package.json, add:

"scripts": {
    "postinstall": "path_to_your_script"
  }

Then, create a script in your project with the following:

const fs = require('fs');

fs.rmdirSync('node_modules/jodit-angular/node_modules', {recursive: true});

This will run when you npm install, so you don't have to manually delete the folder.