mcp-server-semgrep/semgrep-rules/elixir/lang/best-practice/deprecated-calendar-iso-day-of-week-3.yaml

MCP Server for Semgrep Integration - static code analysis with AI

rules:
  - id: deprecated_calendar_iso_day_of_week_3
    message: >-
      `Calendar.ISO.day_of_week/3` is already deprecated. Please use `Calendar.ISO.day_of_week/4` instead.
    severity: WARNING
    languages:
      - elixir
    pattern: $VAR = Calendar.ISO.day_of_week($YEAR, $MONTH, $DAY)
    fix: |
      {$VAR, _, _} = Calendar.ISO.day_of_week($YEAR, $MONTH, $DAY, :default)
    metadata:
      references:
        - https://github.com/elixir-lang/elixir/releases/tag/v1.15.0
      category: best-practice
      technology:
        - elixir