Git Log Heatmap

Use git log to create a heatmap of the files that have been changed the most frequently within a repository. This is useful to identify the files that most likely need a closer look. For example, the file contains too much logic and should be split up into multiple files, it contains hot code paths that change frequently, or maybe it's a file with a history of many fixes.

The following git log command returns a list of files (excluding json and lock files) that have been changed within the last 6 months, sorted by the number of changes.

 
git log --since 6.months.ago --pretty=format: --name-only `
    | Where-Object { ![string]::IsNullOrEmpty($_) } `
    | ?{$_ -notmatch ".(json|lock)$" } `
    | Sort-Object `
    | Group-Object `
    | Sort-Object -Property Count -Descending `
    | Select-Object -Property Count, Name -First 25

 
git log --since=6.months.ago --pretty=format: --name-only \
    | grep -v '^$' \
    | grep -v '\.(json|lock)$' \
    | sort \
    | uniq -c \
    | sort -rn \
    | head -n 25

Feel free to update this developer bit on GitHub, thanks in advance!