no-zero-fractions.md

no-zero-fractions

📝 Require consistent decimal numbers without redundant zeros.

💼 This rule is enabled in the following configs: ✅ recommended, 🎨 recommended-css, 🧩 recommended-json, 💎 recommended-soml, 🛠️ recommended-toml, 📋 recommended-yaml, ☑️ unopinionated.

🔧 This rule is automatically fixable by the --fix CLI option.

Use a leading zero before the decimal point, and remove redundant trailing fractional zeros and dangling decimal points. For example, prefer 0.5 over .5, 1.5 over 1.50, and 1 over 1.0 or 1..

The rule also supports JSON, JSONC, JSON5, SOML, TOML, YAML, and CSS. It preserves CSS units (2.0px → 2px, .5s → 0.5s) and SOML/TOML/YAML float types (1.00 → 1.0). Tagged YAML scalars, strings, .inf, and .nan are skipped.

Examples

// ❌
const foo = 1.0;

// ❌
const foo = 1.;

// ✅
const foo = 1;

// ❌
const foo = -1.0;

// ✅
const foo = -1;

// ❌
const foo = 123_456.000_000;

// ✅
const foo = 123_456;

// ❌
const foo = 123.111000000;

// ✅
const foo = 123.111;

// ❌
const foo = 123.00e20;

// ✅
const foo = 123e20;

// ✅
const foo = 1.1;

// ✅
const foo = -1.1;

// ✅
const foo = 123.456;

// ✅
const foo = 1e3;