Rake and Task Automation

# Rakefile
require "rake/clean"
CLEAN.include("tmp/**/*")

desc "Say hello"
task :hello, [:name] do |t, args|
  name = args[:name] || "World"
  puts "Hello, #{name}!"
end

namespace :db do
  desc "Run migrations"
  task migrate: :environment do
    puts "Migrating..."
  end
  task :environment do
    require_relative "config/environment"
  end
end

file "build/app.js" => Dir["src/**/*.js"] do |t|
  sh "esbuild src/index.js --bundle --outfile=#{t.name}"
end

directory "build"
task build: ["build", "build/app.js"]

require "rspec/core/rake_task"
RSpec::Core::RakeTask.new(:spec)
task default: :spec

rake -T              # list tasks
rake hello[Ana]
rake db:migrate
rake                 # default task