Reports usages of errors.As that can be replaced with errors.AsType, a generic function introduced in Go 1.26 that unwraps errors in a type-safe way and returns a typed result directly.

Instead of declaring a separate variable and passing a pointer to it, errors.AsType returns a typed result directly. This makes the code shorter, easier to read, and avoids common mistakes related to incorrect pointer usage.

예:

var cfgErr ConfigError        // wrong: value, not pointer
if errors.As(err, &cfgErr) {  // panic
    fmt.Println("Config error on field:", cfgErr.Field)
} else {
    fmt.Println("errors.As: could not detect ConfigError")
}

Here, errors.As requires a predeclared variable and a pointer to that variable.

To simplify the code and improve type safety, use the Replace with 'errors.AsType' quick-fix.

After the quick‑fix is applied:

if cfgErr, ok := errors.AsType[*ConfigError](err); ok {
    fmt.Println("Config error on field:", cfgErr.Field)
} else {
    fmt.Println("errors.As: could not detect ConfigError")
}

This form unwraps the error in a single expression, returns a correctly typed value, and removes the need for manual pointer handling.