Angular 4 - “tree.branch is not a function” when trying to start a new project

Question

When I run ng new testApp I get this error

Error: tree.branch is not a function
tree.branch is not a function

My node version is

Answer 1

Remove the node_modules folder from your $HOME directory

cd $HOME
rm -rf node_modules

For some reason the node_modules folder was in the $HOME directory and ng CLI was using it.

Answer 2

I had the same issue with npm 5.5.1 node 8.8.1 and angular cli 1.4.9 (latest from everything)

It failed always, when I was running it anywhere else than the $HOME directory.

But it worked in the $HOME

So I just create projects in $HOME and then I move to the final location.