The composition id it registers under; null when the published file could not be read
The images it uses, copied next to its runtime content at the same relative paths
Unsupported features the content uses (written anyway only with force)
Its path from the input directory ("/" separated)
Where its runtime content is written
Why it is not written; null when it is
The published file
The runtime content (JavaScript source) that is written; null when it is not written
Things to look at that did not stop the generation
Whether a file is already there (writing replaces it)