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/// Use this protocol when your type has no single JavaScript class.
/// For example, a union type of multiple classes or primitive values.
public protocol JSBridgedType: JSValueCompatible, CustomStringConvertible {
/// If your class is incompatible with the provided value, return `nil`.
init?(from value: JSValue)
}
public extension JSBridgedType {
static func construct(from value: JSValue) -> Self? {
Self(from: value)
}
var description: String { jsValue.description }
}
/// Conform to this protocol when your Swift class wraps a JavaScript class.
public protocol JSBridgedClass: JSBridgedType {
/// The constructor function for the JavaScript class
static var constructor: JSFunction? { get }
/// The JavaScript object wrapped by this instance.
/// You may assume that `jsObject instanceof Self.constructor == true`
var jsObject: JSObject { get }
/// Create an instance wrapping the given JavaScript object.
/// You may assume that `jsObject instanceof Self.constructor`
init(unsafelyWrapping jsObject: JSObject)
}
public extension JSBridgedClass {
var jsValue: JSValue { jsObject.jsValue }
init?(from value: JSValue) {
guard let object = value.object else { return nil }
self.init(from: object)
}
init?(from object: JSObject) {
guard let constructor = Self.constructor, object.isInstanceOf(constructor) else { return nil }
self.init(unsafelyWrapping: object)
}
}
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