Ionic invalid package name __ngcc_entry_points__.json

Question

I'm almost finished developing my application with ionic and angular. Unfortunately, I'm totally stuck. I can't build my application (on android) anymore.

Here's the error:

ionic cordova build android
cordova.cmd platform add android --save
Using cordova-fetch for cordova-android@^8.0.0
Failed to fetch platform cordova-android@^8.0.0
Probably this is either a connection problem, or platform spec is incorrect.
Check your connection and platform name/version/URL.
Error: npm: Command failed with exit code 1 Error output:
npm ERR! code EINVALIDPACKAGENAME
npm ERR! Invalid package name "__ngcc_entry_points__.json": name cannot start with an underscore

npm ERR! A complete log of this run can be found in:
npm ERR!     C:\Users\Jules\AppData\Roaming\npm-cache\_logs\2020-06-09T17_09_27_363Z-debug.log
[ERROR] An error occurred while running subprocess cordova.

This problem had already happened to me on another project. To fix it I just had to search in the file explorer and rename __ngcc_entry_points__.json without the underscore of the beginning. Even if some time later it would come back, I just had to rename it to.

Unfortunately, __ngcc_entry_points__.json is totally untraceable everywhere in my project. I'm completely blocked.

Kaleena

May it be related to #33817324 Also you can try to remove node_modules folder and run 'npm install' again – Lowly

Answer 1

Solution to this problem is:

rm -rf node_modules

npm install 

Campion

This fixes 99% of problems related with npm. – Silicosis

Also I needed to delete the package-lock.json as suggested in https://mcmap.net/q/495338/-ionic-invalid-package-name-__ngcc_entry_points__-json – Unwholesome

It would be helpful if you explained what the command 'rm -rf node_modules' is actually telling npm to do. – Brigand

@Brigand rm isn't an npm command, it just deletes the node_modules folder. There's a nice summary of what the flags mean here: askubuntu.com/a/670655/938513 – Filmer

The answer is "Delete node_modules folder and then run npm install". rm -rf is a command for Linux OS. – Wendelin

Awful solution. he should just delete ngcc_entry_points entry from package.lock.json – Asthenic

Answer 2

I have often experienced seeing this error message while working on Angular projects. And that prevents adding any dependencies due to the conflicts in the package-lock.json file. Whereas removing the node modules folder and reinstalling them gets rid of this, it's not always feasible to do that as for bigger projects, it can consume a lot of time. The solution that works for me is

1. Deleting package-lock.json file
2. Deleting ngcc_entry_points.json file from the node_modules folder
3. Running npm install (It just recreates the package-lock.json file) And just like that conflicts get resolved! Hope it helps save time for someone.

Yaelyager

Answer 3

I had this problem and it was caused due to __ngcc_entry_points__ element in package-lock.json file (can be located in the root directory, next to package.json).

Removing the __ngcc_entry_points__ element from package-lock.json, deleting node_modules and running npm install again fixed the problem

Gremlin

Answer 4

For me, the solution was to remove any space from the "name" in package.json, for example

{
  "name": "My App",
  "version": "0.0.1",
  ...

becomes

{
  "name": "My_App",
  "version": "0.0.1",
  ...

Rhizomorphous

Answer 5

Check if the name of your app in package.json is valid.

https://docs.npmjs.com/files/package.json

Dishwasher

Answer 6

Ionic 6+ / Capaciotr 3+

Error:

Invalid package name "ngcc_entry_points.json": name cannot start with an underscore

My issue here was on the package.json file:

I have put version like so: "version": "1.5.0-build:2",

But it didn't work. So changed it to: "version": "1.5.0", and no issue now.

Creech

Answer 7

I´m new to Angular, and I got this same error when installing OAuth2 complement. It was just the wrong folder (I know, very beginner mistake), if you are trying to run npm command check you are at your common directory.

Balkh