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module Language
module Node
def self.npm_cache_config
"cache=#{HOMEBREW_CACHE}/npm_cache"
end
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.
output = Utils.popen_read("npm pack --ignore-scripts")
if !$CHILD_STATUS.exitstatus.zero? || output.lines.empty?
raise "npm failed to pack #{Dir.pwd}"
end
output.lines.last.chomp
end
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
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 install args for global style module format installed into libexec
%W[
-ddd
--global
--build-from-source
--#{npm_cache_config}
--prefix=#{libexec}
#{Dir.pwd}/#{pack}
]
end
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
end
end
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