Flutter Log Extension

import 'dart:io';

enum LogLevel {
  debug("💬", "\x1B[37m"), // White
  info("ℹ️", "\x1B[36m"), // Cyan
  warning("⚠️", "\x1B[33m"), // Yellow
  error("❌", "\x1B[31m"); // Red

  final String emoji;
  final String colorCode;

  const LogLevel(this.emoji, this.colorCode);
}

extension LogExtension on Object {
  void log({
    String tag = "APP",
    LogLevel level = LogLevel.debug,
    bool enableColors = true,
    bool showCallerInfo = false,
  }) {
    final now = DateTime.now().toIso8601String();

    final color = (enableColors && _supportsAnsiColors) ? level.colorCode : '';
    final reset = (enableColors && _supportsAnsiColors) ? "\x1B[0m" : '';

    final callerInfo = showCallerInfo ? _getCallerInfo() : '';
    final callerSection = callerInfo.isNotEmpty ? " $callerInfo" : '';

    final message = "${level.emoji} [$tag:$callerSection] $now $this";
    debugPrint("$color$message$reset");
  }

  bool get _supportsAnsiColors =>
      !Platform.isWindows || stdout.supportsAnsiEscapes;

  String _getCallerInfo() {
    try {
      final line = StackTrace.current.toString().split("\n")[2].trim();
      final match = RegExp(r'\((.+?):(\d+):\d+\)$').firstMatch(line);
      if (match != null) {
        final file =
            match.group(1)?.split(Platform.pathSeparator).last ?? 'unknown';
        final lineNum = match.group(2) ?? '0';
        return "$file:$lineNum";
      }
    } catch (_) {}
    return '';
  }
}

If you want to change colors of logs you can follow this link for the ansi codes.

Usage

// Usage 
void main() {
  "Fetching user data...".log(
    tag: "USER",
    level: LogLevel.info,
    showCallerInfo: true,
  );
  "Missing token!".log(tag: "AUTH", level: LogLevel.warning);
  "Something exploded!".log(tag: "CORE", level: LogLevel.error);

Output