Module: Language::Node

Defined in:
language/node.rb

Overview

Helper functions for Node formulae.

Class Method Summary collapse

Class Method Details

.local_npm_install_args ⇒ Array<String>

Returns:



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# File 'language/node.rb', line 79

def self.local_npm_install_args
  setup_npm_environment
  # npm install args for local style module format
  %W[
    -ddd
    --build-from-source
    --#{npm_cache_config}
  ]
end

.npm_cache_config ⇒ String

Returns:



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# File 'language/node.rb', line 10

def self.npm_cache_config
  "cache=#{HOMEBREW_CACHE}/npm_cache"
end

.pack_for_installation ⇒ Object 



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# File 'language/node.rb', line 14

def self.pack_for_installation
  # Homebrew assumes the buildpath/testpath will always be disposable
  # and from npm 5.0.0 the logic changed so that when a directory is
  # fed to `npm install` only symlinks are created linking back to that
  # directory, consequently breaking that assumption. We require a tarball
  # because npm install creates a "real" installation when fed a tarball.
  if (package = Pathname("package.json")) && package.exist?
    begin
      pkg_json = JSON.parse(package.read)
    rescue JSON::ParserError
      opoo "Could not parse package.json!"
      raise
    end
    prepare_removed = pkg_json["scripts"]&.delete("prepare")
    prepack_removed = pkg_json["scripts"]&.delete("prepack")
    postpack_removed = pkg_json["scripts"]&.delete("postpack")
    package.atomic_write(JSON.pretty_generate(pkg_json)) if prepare_removed || prepack_removed || postpack_removed
  end
  output = Utils.popen_read("npm", "pack", "--ignore-scripts")
  raise "npm failed to pack #{Dir.pwd}" if !$CHILD_STATUS.exitstatus.zero? || output.lines.empty?

  output.lines.last.chomp
end

.setup_npm_environment ⇒ Object 



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# File 'language/node.rb', line 38

def self.setup_npm_environment
  # guard that this is only run once
  return if @env_set

  @env_set = true
  # explicitly use our npm and node-gyp executables instead of the user
  # managed ones in HOMEBREW_PREFIX/lib/node_modules which might be broken
  begin
    ENV.prepend_path "PATH", Formula["node"].opt_libexec/"bin"
  rescue FormulaUnavailableError
    nil
  end
end

.std_npm_install_args(libexec) ⇒ Object 



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# File 'language/node.rb', line 52

def self.std_npm_install_args(libexec)
  setup_npm_environment
  # tell npm to not install .brew_home by adding it to the .npmignore file
  # (or creating a new one if no .npmignore file already exists)
  open(".npmignore", "a") { |f| f.write("\n.brew_home\n") }

  pack = pack_for_installation

  # npm 7 requires that these dirs exist before install
  (libexec/"lib").mkpath

  # npm install args for global style module format installed into libexec
  args = %W[
    -ddd
    --global
    --build-from-source
    --#{npm_cache_config}
    --prefix=#{libexec}
    #{Dir.pwd}/#{pack}
  ]

  args << "--unsafe-perm" if Process.uid.zero?

  args
end