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CONTRIBUTING.md

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Contributing

  1. Fork it ( https://github.com/blockscout/blockscout/fork )
  2. Create your feature branch (git checkout -b my-new-feature)
  3. Write tests that cover your work
  4. Commit your changes (git commit -am 'Add some feature')
  5. Push to the branch (git push origin my-new-feature)
  6. Create a new Pull Request. The title of Pull Request should follow Conventional Commits specification and should start with feat:, fix:, chore:, doc:, perf:, refactor: prefix.

General

  • Commits should be one logical change that still allows all tests to pass. Prefer smaller commits if there could be two levels of logic grouping. The goal is to allow contributors in the future (including your own future self) to determine your reasoning for making changes and to allow them to cherry-pick, patch or port those changes in isolation to other branches or forks.
  • If during your PR you reveal a pre-existing bug:
    1. Try to isolate the bug and fix it on an independent branch and PR it first.
    2. Try to fix the bug in a separate commit from other changes:
      1. Commit the code in the broken state that revealed the bug originally
      2. Commit the fix for the bug.
      3. Continue original PR work.

Enhancements

Enhancements cover all changes that make users lives better:

Bug Fixes

For bug fixes, whenever possible, there should be at least 2 commits:

  1. A regression test commit that contains tests that demonstrate the bug and show as failing.
  2. The bug fix commit that shows the regression test now passing.

This format ensures that we can run the test to reproduce the original bug without depending on the new code in the fix, which could lead to the test falsely passing.

Incompatible Changes

Incompatible changes can arise as a side-effect of either Enhancements or Bug Fixes. During Enhancements, incompatible changes can occur because, as an example, in order to support showing end-users new data, the database schema may need to be changed and the index rebuilt from scratch. During bug fixes, incompatible changes can occur because in order to fix a bug, the schema had to change, or how certain internal APIs are called changed.

  • Incompatible changes should be called out explicitly, with any steps the various user roles need to do to upgrade.

  • If a schema change occurs that requires a re-index add the following to the Pull Request description:

    **NOTE**: A database reset and re-index is required

Pull Request

There is a PULL_REQUEST_TEMPLATE.md for this repository, but since it can't fill in the title for you, please follow the following steps when opening a Pull Request before filling in the template:

  • Title
    • Prefix labels if you don't have permissions to set labels in the GitHub interface.
    • (bug) for bug fixes
    • (enhancement) for enhancements
    • (incompatible changes) for incompatible changes, such a refactor that removes functionality, changes arguments, or makes something required that wasn't previously.
    • Single sentence summary of change
      • What was fixed for bugs
      • What was added for enhancements
      • What was changed for incompatible changes

See #255 as an example PR that uses GitHub keywords and a Changelog to explain multiple changes.