math/prefer-number-is-nan

enforce the use of Number.isNaN() instead of other checking ways

• ⚙️ This rule is included in "plugin:math/recommended".
• 🔧 The --fix option on the command line can automatically fix some of the problems reported by this rule.
• 💡 Some problems reported by this rule are manually fixable by editor suggestions.

📖 Rule Details

This rule aims to enforce the use of Number.isNaN() instead of other checking ways.

/* eslint math/prefer-number-is-nan: 'error' */ /* ✓ GOOD */ x = Number.isNaN(n); /* ✗ BAD */ x = typeof n == 'number' && isNaN(n); x = n !== n; x = Object.is(n, NaN);

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🔧 Options

Nothing.

📚 Further reading

• MDN - Number.isNaN()

🚀 Version

This rule was introduced in eslint-plugin-math v0.4.0

🔍 Implementation

• Rule source
• Test source
• Test fixture sources