Module: ReactManifest::Watcher

Defined in:
lib/react_manifest/watcher.rb

Overview

Watches the ux/ directory tree for file changes and triggers manifest regeneration automatically.

Uses the ‘listen` gem (soft dependency — degrades gracefully if not available). Auto-started in development via the Railtie initializer.

Watches ux_root recursively so newly added controller directories are picked up without a server restart.

Constant Summary collapse

DEBOUNCE_SECONDS = 
0.3

Class Method Summary collapse

Class Method Details

.running? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/react_manifest/watcher.rb', line 50

def running?
  !@listener.nil?
end

.start(config = ReactManifest.configuration) ⇒ Object 



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# File 'lib/react_manifest/watcher.rb', line 14

def start(config = ReactManifest.configuration)
  begin
    require "listen"
  rescue LoadError
    log "listen gem not available — file watching disabled. " \
        "Add `gem 'listen'` to the development group in your Gemfile."
    return
  end

  root = config.abs_ux_root

  unless Dir.exist?(root)
    log "ux_root does not exist (#{root}) — file watching disabled until directory is created."
    return
  end

  log "Watching #{root.sub("#{Rails.root}/", '')} for changes..."

  @listener = Listen.to(
    root,
    only: config.extensions_pattern,
    latency: DEBOUNCE_SECONDS
  ) do |modified, added, removed|
    changed = (modified + added + removed).map { |f| File.basename(f) }
    log "File change detected: #{changed.join(', ')}"
    regenerate!(config)
  end

  @listener.start
end

.stop ⇒ Object 



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# File 'lib/react_manifest/watcher.rb', line 45

def stop
  @listener&.stop
  @listener = nil
end