math/prefer-math-sum-precise

enforce the use of Math.sumPrecise() instead of other summation methods

• 🔧 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 Math.sumPrecise() instead of other summation methods.

Math.sumPrecise() addresses floating-point precision issues that occur with traditional summation approaches:

• More precise algorithm: Uses a more precise algorithm than naive summation
• Consistency: Standardized approach to precise summation
• Performance: Optimized implementation in the JavaScript engine

Now loading...

🔧 Options

{
  "math/abs": [
    "error",
    {
      "aggressive": false
    }
  ]
}

• aggressive ... configure the aggressive mode for only this rule. (default: false)

The aggressive mode

This plugin never reports expressions with unknown type by default. Because it's hard to know the type of objects, it will cause false positives.

If you configured the aggressive mode, this plugin reports expressions with unknown type even if the rules couldn't know the type of operands.

📚 Further reading

• Math.sumPrecise() proposal
• MDN - Math.sumPrecise()

🚀 Version

This rule was introduced in eslint-plugin-math v0.11.0

🔍 Implementation

• Rule source
• Test source
• Test fixture sources