import PackageDescription

let package = Package(
        .
        .
        .
    dependencies: [
        .package(url: "https://github.com/k-motoyan/LooseCodable", from: "1.0.0"),
    ],
        .
        .
        .
)

struct User: Codable {
    let name: String
    let age: Int
}

import LooseCodable

struct User: Codable {
    let name: String

    // Wrap the type of property that may receive unintended data in `LooseCodable`.
    private let _age: LooseCodable<Int>

    // public type is not changed.
    var age: Int {
        return self._age.value
    }

    enum CodingKeys: String, CodingKey {
        case name
        case _age = "age"
    }
}