unnecessaryNumericFractions

Reports numeric literals with unnecessary zero fractions or dangling dots.

✅ This rule is included in the ts stylistic presets.

Numeric literals with trailing zero fractions (e.g., 1.0) or dangling dots (e.g., 1.) are unnecessarily verbose and can be confusing. The zero fraction or dangling dot doesn’t add any precision information to the number.

This rule reports numeric literals with unnecessary zero fractions or dangling dots.

Examples

❌ Incorrect

const value = 1.0;

const value = 13.000;

const value = 1.;

const value = 1.20000;

✅ Correct

const value = 1;

const value = 13;

const value = 1;

const value = 1.2;

Options

This rule is not configurable.

When Not To Use It

If you prefer explicit zero fractions or dangling dots in numeric literals for stylistic consistency, this rule may not be for you.

Further Reading

• MDN: Number
• MDN: Grammar and types - Numeric literals

Equivalents in Other Linters

• ESLint: unicorn/no-zero-fractions
• Oxlint: unicorn/no-zero-fractions