Non existing source shows invalid file

[olysyuk]

Try config

symlink: {
    options: {
        overwrite: true
    },
    test: {
        files: [
            {
                src: 'nonexistingfolder',
                dest: 'new'
            }
        ]
    },
}

It will return:

grunt symlink:test
Running "symlink:test" (symlink) task
Warning: Arguments to path.join must be strings Use --force to continue.

Aborted due to warnings.

Instead of File not exist