An action that runs git diff on your PR and comments back with the diff stats. Goes a little bit beyond the stats reported by GitHub by letting you specifiy options to pass into git diff call (e.g. ignore certain files). You can also make this action label the PR with predefined sizes. Both the label names and size values are configurable. The labels will need to be created for the repository, this workflow does not create the size labels for you.

The default label names are:

• extra-small
• small
• medium
• large
• extra-large

The following workflow ignores:

• files that have "generated" anywhere in the path
• json files
• svg files

And it will add the size labels to the PRs as well. The extra-small label has a custom name and size.

name: Report Diff Stats

on:
  pull_request:
    types: ['opened', 'edited', 'reopened', 'synchronize']

jobs:
  diff:
    name: Report Diff Stats
    runs-on: ubuntu-latest
    steps:
      - name: Checkout the latest code
        uses: actions/checkout@v2
        with:
          fetch-depth: 0
      - name: Run diff and comment back with the stats
        uses: SudeepSidhu/diff-stats-action@v2
        with:
          diff-options: :^*generated* :^*.json :^*.svg
          add-size-label: true
          extra-small-label: xs
          extra-small-size: 10

Diff stats:

2 files changed, 3 insertions(+)