version: "2"

linters:
  enable:
    - gosec          # security checks
    - revive         # style & correctness (golint successor)
    - gocritic       # bugs, performance, style
    - unconvert      # unnecessary type conversions
    - unparam        # unused function parameters
    - misspell       # typos in comments/strings
    - errcheck       # unchecked errors (on by default, being explicit)
    - govet          # suspicious constructs (on by default)
    - staticcheck    # deep static analysis (on by default)
    - ineffassign    # unused assignments (on by default)
    - unused         # unused code (on by default)
    - nilerr         # returning nil when error is non-nil
    - perfsprint     # faster fmt.Sprintf alternatives
    - prealloc       # slice pre-allocation hints

linters-settings:
  revive:
    rules:
      - name: exported
        disabled: true  # don't require doc comments on every export
  gocritic:
    enabled-tags:
      - diagnostic
      - performance
    disabled-checks:
      - ifElseChain    # sometimes clearer than switch
  gosec:
    excludes:
      - G104  # don't flag deferred .Close() unchecked errors
  funlen:
    lines: 80

formatters:
  enable:
    - gofmt
    - goimports

output:
  sort-order:
    - file