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On the tests/ directory, there is a dangling-symlink symbolic link that purposedly does not exist. Now, this is fine but can cause some other node modules that require scanning of a directory's file structure to fail.
I personally have encountered this problem in CoreJS, since I needed to patch it to work with the dangling-symlink. See here.
Now, I've just noticed the symlink is also causing trouble with nide, which fails to work because of the symlink, here's the error:
Created project directory
Added project directory to .gitignore
Added project directory to .npmignore
Nide running at http://localhost:8123
if (err) throw err
Error: ENOENT, no such file or directory '/Users/der/Node/core-js/node_modules/haml-coffee/node_modules/findit/test/symlinks/dir1/dangling-symlink'
I think it's better to create the symlink dynamically, while the test is running, and remove it after tests are finished.
Also, the symlink can be created when the tests are first run, and left there, as long as the file is ignored on your .gitignore.