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Bugs

• Line 1: Parameters a and b have implicit any types when noImplicitAny is enabled.
• Line 1: The return type is unspecified. Because + behaves differently for numbers and strings, the function’s intended behavior is ambiguous.

Security

• No direct security vulnerabilities are present.
• Explicit numeric types prevent unintended string concatenation or coercion when this function is used with loosely typed input.

Performance

• The implementation is already optimal for numeric addition.
• No additional allocations or unnecessary operations are performed.

Style

• Add parameter and return type annotations for clarity and type safety.
• Expand the one-line function to improve readability and maintainability.

function add(a: number, b: number): number {
  return a + b;
}