code: function toRelativePath(relativePath) {
    const stripped = relativePath.replace(/\/$/g, '') // Remove trailing /
  
    return /^((\.\.)|(\.))($|\/)/.test(stripped) ? stripped : `./${stripped}`
  }
docs: convert a potentially relative path from node utils into a true
  relative path.
  
  ../ -> ..
  ./ -> .
  .foo/bar -> ./.foo/bar
  ..foo/bar -> ./..foo/bar
  foo/bar -> ./foo/bar
  
  @param relativePath {string} relative posix path potentially missing leading './'
  @returns {string} relative posix path that always starts with a ./