StringExtensions.cs

using System.Text.RegularExpressions;

namespace psedit
{
    public static class StringExtensions
    {

        // graphics/color mode ESC[1;2;...m
        private const string GraphicsRegex = @"(\x1b\[\d+(;\d+)*m)";

        // CSI escape sequences
        private const string CsiRegex = @"(\x1b\[\?\d+[hl])";

        // replace regex with .NET 6 API once available
        internal static readonly Regex AnsiRegex = new Regex($"{GraphicsRegex}|{CsiRegex}", RegexOptions.Compiled);
        public static string ToPlainText(this string output)
        {
            return AnsiRegex.Replace(output, string.Empty);
        }
        public static string ParseNewtonsoftErrorMessage(string message)
        {
            var pattern = $"(.*)Path(.*)"; 
            var matches = Regex.Matches(message, pattern);
            if (matches[0].Groups[1].Value != null)
            {
                return matches[0].Groups[1].Value;
            }
            return message;
        }
    }
}