numericErasingOperations

Reports operations that always result in zero, such as multiplication by zero.

✅ This rule is included in the ts logicalStrict presets.

This rule reports operations that always result in zero, regardless of the other operand.

These “erasing” operations typically indicate a logic error where the developer may have intended a different operation. The entire expression can be replaced with 0 directly.

Examples

❌ Incorrect

const value = x * 0;

const value = 0 * x;

const value = x & 0;

const value = 0 / x;

✅ Correct

const value = 0;

const value = x * 1;

const value = x & mask;

const value = x / divisor;

Options

This rule is not configurable.

When Not To Use It

If you are intentionally using these operations for their side effects or as a stylistic choice to indicate the result should be zero, you may want to disable this rule. However, in most cases, directly using 0 is clearer.

Further Reading

• MDN: Multiplication
• MDN: Bitwise AND

Equivalents in Other Linters

• Oxlint: oxc/erasing-op