no-unnecessary-array-splice-count

📝 Disallow using .length or Infinity as the deleteCount or skipCount argument of Array#{splice,toSpliced}().

💼 This rule is enabled in the following configs: ✅ recommended, ☑️ unopinionated.

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

When calling Array#splice(start, deleteCount) and Array#toSpliced(start, skipCount), omitting the deleteCount and skipCount argument will delete or skip all elements after start. Using .length or Infinity is unnecessary.

Examples

// ❌
const foo = array.toSpliced(1, string.length);

// ✅
const foo = array.toSpliced(1);

// ❌
const foo = array.toSpliced(1, Infinity);

// ✅
const foo = array.toSpliced(1);

// ❌
const foo = array.toSpliced(1, Number.POSITIVE_INFINITY);

// ✅
const foo = array.toSpliced(1);

// ❌
array.splice(1, string.length);

// ✅
array.splice(1);

// ❌
array.splice(1, Infinity);

// ✅
array.splice(1);

// ❌
array.splice(1, Number.POSITIVE_INFINITY);

// ✅
array.splice(1);