Why "Cannot find type 'TextOutputFormat' in scope" when this type is from the stdlib?

[young (rtSwift)]

I'm trying to add syntax highlighting to MarkdownUI. This uses Splash.

Adding some sample code and get this compile error:

But TextOutputFormat is from the Standard Library.

[bbrk24]

TextOutputFormat isn’t in the standard library. Can you find some documentation or an article that mentions it, to point us to what you’re looking for?

[young (rtSwift)]

Nevermind, I search "swift TextOutputFormat" and got TextOutputStream.

So where is TextOutputFormat? Must be something in the Splash package?

---

Here: TextOutputStream | Apple Developer Documentation

This compile:

import Foundation


struct ASCIILogger: TextOutputStream {
    mutating func write(_ string: String) {
        let ascii = string.unicodeScalars.lazy.map { scalar in
            scalar == "\n"
              ? "\n"
              : scalar.escaped(asASCII: true)
        }
        print(ascii.joined(separator: ""), terminator: "")
    }
}

[bbrk24]

@young

So where is TextOutputFormat? Must be something in the Splash package?

I have no idea what TextOutputFormat you’re talking about. That’s why I asked for a link to an article, to see if the article would make it more clear where it comes from or what was intended.

[young (rtSwift)]

I found it. It's part of the Demo of MarkdownUI code syntax highlighting using Splash.

Just clone it, there is a Demo app Xcode project. Open it and TextOutputFormat is an implement of protocol Splash.OutputFormat