28464678013

Committed 30 Jun 2026 05:48PM UTC coverage: 74.299% (+0.2%) from 74.111%

Build # 28464678013

Build Type

Pull #457

circleci

Committed by

Janell-Huyck

Commit Message

Ensure yarn is available when Rake runs javascript:install.

Activate Corepack from the nvm Node bin so jsbundling-rails can shell out
to bare yarn in CI and during assets:precompile specs.

Co-authored-by: Cursor <cursoragent@cursor.com>

Pull Request Pull Request #457: Upgrade stack to Ruby 4.0.5 and Node 26.4.0.

Coverage Stats

333 of 494 branches covered (67.41%)

Branch coverage included in aggregate %.

21 of 23 new or added lines in 1 file covered. (91.3%)

1 existing line in 1 file now uncovered.

965 of 1253 relevant lines covered (77.02%)

23.59 hits per line

Source File
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85.51

/lib/javascript_build_env.rb

# frozen_string_literal: true

require 'json'

# jsbundling-rails and bin/yarn shell out to yarn; prepend the Node version from
# .nvmrc when nvm is installed so builds work even if an older node or yarn
# binary appears earlier on PATH. Activates Yarn via Corepack from that Node's
# bin directory (bare `yarn` is unavailable until corepack enable runs there).
module JavascriptBuildEnv
  module_function

  def apply!(root = default_root)
    node_bin = node_bin_directory(root)
    return unless node_bin

    ENV['PATH'] = "#{node_bin}:#{ENV['PATH']}" unless path_prefixed_with?(node_bin)
    activate_yarn!(root, node_bin)
  end

  def node_bin_directory(root = default_root)
    nvm_node_bin(root)
  end

  def nvm_node_bin(root = default_root)
    nvmrc = root.join('.nvmrc')
    return unless nvmrc.exist?

    version = nvmrc.read.strip.delete_prefix('v')
    nvm_dir = ENV.fetch('NVM_DIR') { File.expand_path('~/.nvm') }
    node_bin = File.join(nvm_dir, 'versions', 'node', "v#{version}", 'bin')

    node_bin if File.directory?(node_bin)
  end

  def activate_yarn!(root, node_bin)
    package_manager = package_manager_for(root)
    return unless package_manager

    corepack = File.join(node_bin, 'corepack')
    return unless File.executable?(corepack)

    # Invoke Corepack from node_bin so shims land in a user-writable directory,
    # not /usr/local when a system Node appears earlier on PATH (CircleCI cimg).
    system(corepack, 'enable', out: File::NULL, err: File::NULL)
    system(corepack, 'prepare', package_manager, '--activate', out: File::NULL, err: File::NULL)
  end

  def package_manager_for(root)
    package_json = root.join('package.json')
    return unless package_json.exist?

    JSON.parse(package_json.read).fetch('packageManager', nil).presence
  rescue JSON::ParserError
    nil
  end

  def path_prefixed_with?(node_bin)
    ENV.fetch('PATH', '').split(File::PATH_SEPARATOR).first == node_bin
  end

  def default_root
    if defined?(Rails) && Rails.application&.initialized?
      Rails.root
    else
      Pathname.new(File.expand_path('..', __dir__))
    end
  end
end

1	# frozen_string_literal: true
2
3	require 'json'	2✔
4
5	# jsbundling-rails and bin/yarn shell out to yarn; prepend the Node version from
6	# .nvmrc when nvm is installed so builds work even if an older node or yarn
7	# binary appears earlier on PATH. Activates Yarn via Corepack from that Node's
8	# bin directory (bare `yarn` is unavailable until corepack enable runs there).
9	module JavascriptBuildEnv	2✔
10	module_function	2✔
11
12	def apply!(root = default_root)	2✔
13	node_bin = node_bin_directory(root)	8✔
14	return unless node_bin	8✔
15
16	ENV['PATH'] = "#{node_bin}:#{ENV['PATH']}" unless path_prefixed_with?(node_bin)	4!
17	activate_yarn!(root, node_bin)	4✔
18	end
19
20	def node_bin_directory(root = default_root)	2✔
21	nvm_node_bin(root)	8✔
22	end
23
24	def nvm_node_bin(root = default_root)	2✔
25	nvmrc = root.join('.nvmrc')	14✔
26	return unless nvmrc.exist?	14✔
27
28	version = nvmrc.read.strip.delete_prefix('v')	12✔
29	nvm_dir = ENV.fetch('NVM_DIR') { File.expand_path('~/.nvm') }	12✔
30	node_bin = File.join(nvm_dir, 'versions', 'node', "v#{version}", 'bin')	12✔
31
32	node_bin if File.directory?(node_bin)	12✔
33	end
34
35	def activate_yarn!(root, node_bin)	2✔
36	package_manager = package_manager_for(root)	4✔
37	return unless package_manager	4✔
38
39	corepack = File.join(node_bin, 'corepack')	2✔
40	return unless File.executable?(corepack)	2!
41
42	# Invoke Corepack from node_bin so shims land in a user-writable directory,
43	# not /usr/local when a system Node appears earlier on PATH (CircleCI cimg).
44	system(corepack, 'enable', out: File::NULL, err: File::NULL)	2✔
45	system(corepack, 'prepare', package_manager, '--activate', out: File::NULL, err: File::NULL)	2✔
46	end
47
48	def package_manager_for(root)	2✔
49	package_json = root.join('package.json')	4✔
50	return unless package_json.exist?	4✔
51
52	JSON.parse(package_json.read).fetch('packageManager', nil).presence	2✔
53	rescue JSON::ParserError
NEW 54	nil	×
55	end
56
57	def path_prefixed_with?(node_bin)	2✔
58	ENV.fetch('PATH', '').split(File::PATH_SEPARATOR).first == node_bin	4✔
59	end
60
61	def default_root	2✔
62	if defined?(Rails) && Rails.application&.initialized?	4!
63	Rails.root	4✔
64	else	×
NEW 65	Pathname.new(File.expand_path('..', __dir__))	×
66	end
67	end
68	end

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