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# frozen_string_literal: true
module WebpackHelper
def prefetch_link_tag(source)
href = asset_path(source)
link_tag = tag.link(rel: 'prefetch', href: href)
early_hints_link = "<#{href}>; rel=prefetch"
request.send_early_hints("Link" => early_hints_link)
link_tag
end
def webpack_bundle_tag(bundle)
javascript_include_tag(*webpack_entrypoint_paths(bundle))
end
def webpack_preload_asset_tag(asset, options = {})
path = Gitlab::Webpack::Manifest.asset_paths(asset).first
if options.delete(:prefetch)
prefetch_link_tag(path)
else
preload_link_tag(path, options)
end
rescue Gitlab::Webpack::Manifest::AssetMissingError
# In development/test, incremental compilation may be enabled, meaning not
# all chunks may be available/split out
raise unless Gitlab.dev_or_test_env?
end
def webpack_controller_bundle_tags
chunks = []
action = case controller.action_name
when 'create' then 'new'
when 'update' then 'edit'
else controller.action_name
end
route = [*controller.controller_path.split('/'), action].compact
until chunks.any? || route.empty?
entrypoint = "pages.#{route.join('.')}"
begin
chunks = webpack_entrypoint_paths(entrypoint, extension: 'js')
rescue Gitlab::Webpack::Manifest::AssetMissingError
# no bundle exists for this path
end
route.pop
end
if chunks.empty?
chunks = webpack_entrypoint_paths("default", extension: 'js')
end
javascript_include_tag(*chunks)
end
def webpack_entrypoint_paths(source, extension: nil, exclude_duplicates: true)
return "" unless source.present?
paths = Gitlab::Webpack::Manifest.entrypoint_paths(source)
if extension
paths.select! { |p| p.ends_with? ".#{extension}" }
end
force_host = webpack_public_host
if force_host
paths.map! { |p| "#{force_host}#{p}" }
end
if exclude_duplicates
@used_paths ||= []
new_paths = paths - @used_paths
@used_paths += new_paths
new_paths
else
paths
end
end
def webpack_public_host
# We do not proxy the webpack output in the 'test' environment,
# so we must reference the webpack dev server directly.
if Rails.env.test? && Gitlab.config.webpack.dev_server.enabled
host = Gitlab.config.webpack.dev_server.host
port = Gitlab.config.webpack.dev_server.port
protocol = Gitlab.config.webpack.dev_server.https ? 'https' : 'http'
"#{protocol}://#{host}:#{port}"
else
ActionController::Base.asset_host.try(:chomp, '/')
end
end
def webpack_public_path
relative_path = Gitlab.config.gitlab.relative_url_root
webpack_path = Gitlab.config.webpack.public_path
File.join(webpack_public_host.to_s, relative_path.to_s, webpack_path.to_s, '')
end
end
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