mcp-server-semgrep/semgrep-rules/javascript/lang/correctness/useless-eqeq.yaml

MCP Server for Semgrep Integration - static code analysis with AI

rules:
  - id: eqeq-is-bad
    patterns:
      - pattern-not-inside: assert(...)
      - pattern-either:
          - pattern: $X == $X
          - pattern: $X != $X
      - pattern-not: 1 == 1
    message: >-
      Detected a useless comparison operation `$X == $X` or `$X != $X`. This
      operation is always true.
      If testing for floating point NaN, use `math.isnan`, or
      `cmath.isnan` if the number is complex.
    languages:
      - javascript
      - typescript
    severity: INFO
    metadata:
      category: correctness
      technology:
        - javascript