export function char2fileName(char: string): string {
	let codes = Array.from(char)
		.map((x) => x.codePointAt(0)?.toString(16))
		.filter(<T>(x: T | undefined): x is T => x !== undefined);
	if (!codes.includes("200d")) codes = codes.filter((x) => x !== "fe0f");
	codes = codes.filter((x) => x.length !== 0);
	return codes.join("-");
}