Rules
force-array-empty
Use Effect Array predicates for empty and non-empty checks.
Purpose and behavior
Use Effect Array predicates for empty and non-empty checks.
Reports recognized .length comparisons against 0 or 1, including reversed operands. Arbitrary thresholds, impossible negative checks and tautologies are ignored. This syntax-only rule does not prove the receiver is an array.
Options
No configurable options. Enable with "rules/force-array-empty": "error".
Invalid example
if (arr.length === 0) {}Valid example
if (Array.isEmpty(arr)) {}Fixes and exceptions
This rule reports diagnostics without an automatic fix. Rewrite the code deliberately rather than guessing its intended semantics.
For a genuine boundary exception, use an oxlint-disable-next-line rules/force-array-empty -- reason comment. Examples illustrate this rule alone and may omit imports and declarations.
Source and tests
Enabled by the Effect preset.