Add rake npm:bump_version task

Author: kateinoigakukun

tasks/packaging.rake

@@ -47,6 +47,31 @@ namespace :npm do
     end
   end
 
+  desc "Bump version"
+  task :bump_version, [:package, :version] do |t, args|
+    require "json"
+    package = args[:package] or raise "package name is required"
+    version = args[:version] or raise "version is required"
+    pkg_dir = "#{Dir.pwd}/packages/npm-packages/#{package}"
+    pkg_json = "#{pkg_dir}/package.json"
+    package = JSON.parse(File.read(pkg_json))
+    old_version = package["version"]
+    pkg_name = package["name"]
+    package["version"] = version
+    File.write(pkg_json, JSON.pretty_generate(package) + "\n")
+
+    # Update package-lock.json
+    Dir.chdir(pkg_dir) { sh "npm install" }
+    # Update README.md and other docs
+    %x(git grep -l #{pkg_name}@#{old_version}).split.each do |file|
+      content = File.read(file)
+      next_nightly = Date.today.strftime("%Y-%m-%d")
+      content.gsub!(/#{pkg_name}@#{old_version}-\d{4}-\d{2}-\d{2}-a/, "#{pkg_name}@#{version}-#{next_nightly}-a")
+      content.gsub!(/#{pkg_name}@#{old_version}/, "#{pkg_name}@#{version}")
+      File.write(file, content)
+    end
+  end
+
   desc "Build all npm packages"
   multitask :all => NPM_PACKAGES.map { |pkg| pkg[:name] }
 end