There is no api for it (yet). BUT YOU CAN:

Use a custom placeholder modifier to show any view as the holder of any other view! e.g:

TextField("", text: $text)
    .placeholder(when: text.isEmpty) {
        Text("Placeholder recreated").foregroundColor(.gray)
}

💡 It’s a simple ZStack that you can in a View extension like:

extension View {
    func placeholder<Content: View>(
        when shouldShow: Bool,
        alignment: Alignment = .leading,
        @ViewBuilder placeholder: () -> Content) -> some View {

        ZStack(alignment: alignment) {
            placeholder().opacity(shouldShow ? 1 : 0)
            self
        }
    }
}

🎁 Now you can apply any kind of style to the placeholder like this gradient placeholder with image:

✅ If you are interested, Here is how to apply resizable gradient on any view

💡 The Art of the simplicity

Most of the time you need to pass just a string and a gray placeholder like:

TextField("", text: $text)
    .placeholder("Placeholder", when: text.isEmpty)

you can write a simple wrapper around the above extension for it:

extension View {
    func placeholder(
        _ text: String,
        when shouldShow: Bool,
        alignment: Alignment = .leading) -> some View {
            
        placeholder(when: shouldShow, alignment: alignment) { Text(text).foregroundColor(.gray) }
    }
}

Just like that 😉