HighFile-scopeDart Plug & play

Avoid Unnecessary `toList()` with Spread Operator

Remove unnecessary .toList() calls when using the spread operator (...) to avoid redundant operations.

Why this matters

The spread operator (... and ...?) flattens collections directly, making toList() redundant and inefficient.

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

Avoid

final list = [
    1,
    2,
    ...anIterable.toList(), // Noncompliant
    3,
    4
];

Prefer

final list = [
    1,
    2,
    ...anIterable,
    3,
    4
];

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