YAML stringify not support emoji flags.

[arkxfly]

Describe the bug

YAML parse not support emoji flags.

Steps to Reproduce

import * as YAML from "https://deno.land/std@0.203.0/yaml/mod.ts";
const yamlStr = `
country: 🇯🇵
`;

const data = YAML.parse(yamlStr) as any;

console.log(data); // { country: "🇯🇵" }

console.log(YAML.stringify(data)); // country: "\U0001F1EF\U0001F1F5"

Expected behavior

support emoji flags.

Environment

deno 1.37.0 (release, x86_64-unknown-linux-gnu)
v8 11.8.172.3
typescript 5.2.2

[lino-levan]

What's the issue? This is correct as far as I am aware. YAML double quotes allow for characters escaping.

[arkxfly]

I expected it to keep the same behavior as JSON.stringify. It’s not that emoji cannot be printable.

[JakeAve]

I know in python you can add a flag to allow emojis without escaping them. I actually wrote up a flag for this a couple weeks ago, but I know we're focussing on stablizing for version 1. Then there's the question of TOML and JSON and making sure things are the same between all of them. I started doing something like this: main...JakeAve:deno_std:yaml-parse-emojs

[arkxfly]

The national flag is a bit special and cannot be displayed on the Edge browser of Window 11.