no-loss-of-precision.md

⚠️ This rule is deprecated. Use eslint/no-loss-of-precision instead.

Pattern: Numeric literal with precision loss

Issue: -

Description

Numbers in JavaScript that exceed certain lengths can lose precision when represented in the language. This can lead to unexpected behavior and bugs in calculations. Using such numbers directly as literals should be avoided.

Examples

Example of incorrect code:

const x = 9007199254740993; // 2^53 + 1
const y = 5123000000000000000000000000001;
const z = 1.0000000000000001;

Example of correct code:

const x = 9007199254740991; // 2^53 - 1
const y = 1.0;
const z = 123456789;

// Using numeric separators for clarity
const budget = 1_000_000_000;
const binary = 0b1010_0001;
const hex = 0xFF_FF_FF_FF;