LowFile-scopeJavaScript / TypeScript Plug & play

Consolidate duplicated schemas

Avoid maintaining multiple equivalent validators for the same shape; centralize checks in a single function/schema.

Why this matters

Prevents drift between validation points and types.

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

Avoid

function isUser1(o){/* same checks */} function isUser2(o){/* same checks */}

Prefer

function isUser(o){ /* single check */ } // reuse everywhere

Bad

isUser1 and isUser2 with identical logic

Good

single isUser validator reused

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 Redundant `None` Comparisons
Identify cases where `x is None` or `x is not None` is used redundantly when `x` is always or never `None`. This may indicate a deeper logic issue.
duplication-complexityreadability-refactor+1
High
Avoid Functions That Always Return the Same Value
Identify functions that return the same value regardless of input. This may indicate poor design or a logic error.
duplication-complexityreadability-refactor+1