Class: Webpacker::Manifest

Inherits:
FileLoader show all
Defined in:
lib/webpacker/manifest.rb

Instance Attribute Summary

Attributes inherited from FileLoader

#data, #mtime, #path

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from FileLoader

load_instance, reset

Class Method Details

.exist? ⇒ Boolean

Helper method to determine if the manifest file exists. Maybe Webpack needs to run? **Used by React on Rails.**

Returns:

  • (Boolean) 


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# File 'lib/webpacker/manifest.rb', line 35

def exist?
  path_object = Webpacker::Configuration.manifest_path
  path_object.exist?
end

.file_path ⇒ Object 



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# File 'lib/webpacker/manifest.rb', line 12

def file_path
  Webpacker::Configuration.manifest_path
end

.lookup(name) ⇒ Object

Throws an error if the file is not found. If Configuration.compile? then compilation is invoked the file is missing. React on Rails users will need to set Configuration.compile? to false as compilation is configured in the package.json for React on Rails.



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# File 'lib/webpacker/manifest.rb', line 20

def lookup(name)
  if Webpacker::Configuration.compile?
    compile_and_find!(name)
  else
    find!(name)
  end
end

.lookup_no_throw(name) ⇒ Object

Find the real file name from the manifest key. Don’t throw an error if the file is simply missing from the manifest. Return nil in that case. If no manifest file exists, then throw an error. **Used by React on Rails.**



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# File 'lib/webpacker/manifest.rb', line 44

def lookup_no_throw(name)
  instance.confirm_manifest_exists

  load_instance
  unless instance
    raise Webpacker::FileLoader::FileLoaderError.new("Webpacker::Manifest.load must be called first")
  end
  instance.data[name.to_s]
end

.lookup_path(name) ⇒ Object

Why does this method exist? Testing? It’s not in the README



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# File 'lib/webpacker/manifest.rb', line 29

def lookup_path(name)
  Rails.root.join(File.join(Webpacker::Configuration.output_path, lookup(name)))
end

Instance Method Details

#confirm_manifest_exists ⇒ Object 



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# File 'lib/webpacker/manifest.rb', line 91

def confirm_manifest_exists
  raise missing_manifest_file_error(@path) unless File.exist?(@path)
end