Git change stats by file and author

Extract change (insertion + deletion) stats per file and author from git.

Usage

Requirement: cwd is a valid git repository.

Arrange by author

node git_stats.js --by-author > stats.csv

Arrange by file

node git_stats.js --by-file > stats.csv

Customize git log used to extract stats

node git_stats.js --by-file|--by-author -- [extra-git-args]> stats.csv

Where extra-git-args gets concatenated to the underlying git log command verbatimly.