LowFile-scopeJavaScript / TypeScript Plug & play

Prefer interfaces over type aliases

Check if type aliases are used instead of interfaces. Interfaces provide better extensibility and readability when defining object shapes.

Why this matters

Interfaces provide better extensibility and readability compared to type aliases. Use interfaces for defining object shapes when possible.

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

Avoid

type User = {
  title: string;
  age: number;
};

Prefer

interface User {
  title: string;
  age: number;
}

Bad

type User = {
  title: string;
  age: number;
};

Good

interface User {
  title: string;
  age: number;
}

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