Error encountered: YouCompleteMe is unable to locate the necessary executable 'npm' for the installation of TSServer

While attempting to install YouCompleteMe for vim and enable support for Java and Javascript, I followed the instructions provided here. My command was:

sudo /usr/bin/python3.6 ./install.py  --java-completer --ts-completer

Unfortunately, I encountered an error message during the installation process:

...
[100%] Linking C shared library /home/vagrant/.vim/bundle/YouCompleteMe/third_party/ycmd/third_party/cregex/regex_3/_regex.so
[100%] Built target _regex
Downloading jdt.ls from http://download.eclipse.org/jdtls/snapshots/jdt-language-server-0.54.0-202004152304.tar.gz...
Extracting jdt.ls to /home/vagrant/.vim/bundle/YouCompleteMe/third_party/ycmd/third_party/eclipse.jdt.ls/target/repository...
Done installing jdt.ls
ERROR: Unable to find executable 'npm'. npm is required to install TSServer.

The strange part is that npm is already in my PATH as confirmed by the following commands:

=> npm -v
6.13.4
=> which npm
/home/vagrant/.nvm/versions/node/v8.17.0/bin/npm

Any insights into why the installation of YouCompleteMe with ts-completer support is failing?

typescriptnpmvimyoucompleteme

Answer №1

Can someone help figure out why YouCompleteMe isn't installing properly with ts-completer support?

If you're experiencing installation failures, it might be because you're running the install.py script as sudo and the location where nvm installs node is not included in the secure_path. The secure_path is utilized when a script runs with sudo permissions.

You can compare the contents of PATH and secure_path by executing the following commands:

$ echo 'echo $PATH' | sudo sh    # secure_path
$ echo 'echo $PATH' | sh         # your user PATH

To verify that sudo does not have npm in its path, run these commands:

$ which npm
$ sudo which npm

What's the solution?

One approach is to execute the script without using sudo like this: 

/usr/bin/python3.6 ./install.py --java-completer --ts-completer

Another option is to copy the contents of nvm bin to one of the secure_path locations such as /usr/local/bin.

$ find $(which npm | xargs dirname) -type l -o -type f | sudo xargs cp -t /usr/local/bin

# test
$ sudo npm -v
$ sudo node -v

After completing these steps, the installer should be able to locate npm.

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