'Ionic invalid package name __ngcc_entry_points__.json

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.

Solution 1:^[1]

Solution to this problem is:

rm -rf node_modules

npm install

Solution 2:^[2]

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

Solution 3:^[3]

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

Deleting package-lock.json file
Deleting ngcc_entry_points.json file from the node_modules folder
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.

Solution 4:^[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",
  ...

Solution 5:^[5]

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

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

Solution 6:^[6]

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.

Solution 7:^[7]

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.

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution	Source
Solution 1	M--
Solution 2	Aharon Ohayon
Solution 3
Solution 4	user276648
Solution 5	user276648
Solution 6	Mike Ballesteros
Solution 7	Sampath

'Ionic invalid package name __ngcc_entry_points__.json

Solution 1:[1]

Solution 2:[2]

Solution 3:[3]

Solution 4:[4]

Solution 5:[5]

Solution 6:[6]

Solution 7:[7]