LowFile-scopeJavaScript / TypeScript Plug & play

Avoid deprecated APIs via types/@deprecated metadata

Flag usages marked as @deprecated (via JSDoc or types) and propose the documented alternative when available.

Why this matters

Prevents regressions and eases dependency upgrades.

Side-by-side examples engineers can pattern-match during review.

Avoid

/** @deprecated use newFn */ function oldFn(){}; oldFn();

Prefer

function newFn(){}; // replace oldFn with newFn

Bad

oldApi() // @deprecated

Good

newApi()

From the same buckets as this rule.

Critical
Avoid Duplicating String Literals
Store repeated string literals in constants or variables to improve maintainability and reduce redundancy.
duplication-complexitymaintainability
Critical
Avoid Empty Methods
Detect methods that have an empty body. If a method is empty, ensure that a comment is present explaining why it remains unimplemented.
maintainabilityreadability-refactor
Critical
Avoid modifying built-in prototypes
Detect modifications to built-in prototypes. Modifying built-in objects can lead to compatibility issues and unexpected behavior. Recommend creating helper functions instead.
maintainabilitysecurity-hardening