Sha256: 5c8c2b6886b7413268cf8f856652a5a650b9d133083c05806510763cd37a4063
Contents?: true
Size: 1.31 KB
Versions: 4
Compression:
Stored size: 1.31 KB
Contents
require "semantic_range"
namespace :webpacker do
desc "Verifies if Yarn is installed"
task :check_yarn do
begin
yarn_version = `yarn --version`
raise Errno::ENOENT if yarn_version.blank?
pkg_path = Pathname.new("#{__dir__}/../../../package.json").realpath
yarn_range = JSON.parse(pkg_path.read)["engines"]["yarn"]
is_valid = SemanticRange.satisfies?(yarn_version, yarn_range) rescue false
is_unsupported = SemanticRange.satisfies?(yarn_version, ">=2.0.0") rescue false
unless is_valid
$stderr.puts "Webpacker requires Yarn \"#{yarn_range}\" and you are using #{yarn_version}"
if is_unsupported
$stderr.puts "This version of Webpacker does not support Yarn #{yarn_version}. Please downgrade to a supported version of Yarn https://yarnpkg.com/lang/en/docs/install/"
$stderr.puts "For information on using Webpacker with Yarn 2.0, see https://github.com/rails/webpacker/issues/2112"
else
$stderr.puts "Please upgrade Yarn https://yarnpkg.com/lang/en/docs/install/"
end
$stderr.puts "Exiting!"
exit!
end
rescue Errno::ENOENT
$stderr.puts "Yarn not installed. Please download and install Yarn from https://yarnpkg.com/lang/en/docs/install/"
$stderr.puts "Exiting!"
exit!
end
end
end
Version data entries
4 entries across 4 versions & 1 rubygems