SwissArmyKnife

Production-grade Dart utilities behind one import.

<===[ SwissArmyKnife ]===> production-grade Dart utilities / one import

SwissArmyKnife is a focused Dart toolkit for the small pieces every serious project eventually needs: expressive extensions, functional result types, async control, validation, HTTP helpers, safe JSON, caching, date ranges, cron scheduling, logging, memoization, circuit breakers, task queues, trees, graphs, reactive state, and middleware pipelines.

It is built for one clear habit:

import 'package:swissarmyknife/swissarmyknife.dart';

Why It Stands Out

• One barrel import for a broad, tested utility surface.
• Fluent extensions for strings, collections, maps, numbers, dates, futures, streams, URIs, regular expressions, bytes, and nullable values.
• Sealed Result, Option, and Either types for explicit control flow.
• Production helpers for retry, debounce, throttle, rate limiting, validation, event buses, disposal, commands, state machines, and lazy values.
• App infrastructure primitives: HTTP requests, API clients, safe JSON, schema validation, LRU cache, env config, logging, benchmarking, cron, and date ranges.
• Advanced composition tools: memoization, circuit breaker, priority task queue, tree/graph utilities, codecs, expression evaluation, reactive store, and middleware pipeline.
• Release gate covers formatting, static analysis, tests, web compilation, dartdoc generation, pub dry-run, and the Jaspr documentation site build.

Install

dependencies:
  swissarmyknife: ^0.1.0

dart pub get

Quick Start

import 'package:swissarmyknife/swissarmyknife.dart';

Future<void> main() async {
  print('hello_world'.toPascalCase()); // HelloWorld
  print(1500000.toCompactString()); // 1.5M

  final parsed = Result.runCatching(() => int.parse('42'));
  print(parsed.getOrElse(0)); // 42

  final validator = Validator<String>.email().minLength(5);
  print(validator.validate('me@example.com').isSuccess); // true

  final json = {
    'user': {'name': 'Ada'},
  };
  print(json.at('user.name').asStringOr('Unknown')); // Ada

  final queue = TaskQueue(concurrency: 2);
  print(await queue.add(() => 'done').future); // done
}

See example/swissarmyknife_example.dart for a broader walk-through.

Feature Map

Area	Highlights
Extensions	Strings, collections, maps, numbers, dates, durations, futures, streams, sets, regex, URIs, bytes, nullable values
Functional	Result, Option, Either, tuples, sync and async pipelines
Async	Debouncer, Throttler, retry, token-bucket and sliding-window rate limiters
Patterns	Validator, EventBus, DisposeBag, Lazy, StateMachine, CommandHistory
Data and IO	SafeJson, SchemaValidator, Cache, Env, Http, ApiClientBuilder
Time	benchmark, benchmarkAsync, DateRange, Recurrence, CronExpression, CronScheduler
Advanced	Memoization, circuit breaker, task queue, tree/graph tools, codec pipelines, expression evaluator, reactive store, middleware pipeline

Platform Support

The package is designed for Dart VM, Flutter mobile, Flutter desktop, and web compilation. Env.load() reads dotenv files and is only available on Dart VM platforms; use Env.fromMap() for browser builds or app-managed runtime configuration.

Documentation

• Full site: turkananation.github.io/swissarmyknife/
• Getting started: doc/GETTING_STARTED.md
• API guide: doc/API_GUIDE.md
• Cookbook: doc/COOKBOOK.md
• Release process: doc/RELEASE.md
• Platform support: doc/PLATFORM_SUPPORT.md
• GitHub wiki source: wiki/

Verification

Run the standard development gate:

dart run tool/agent/verify.dart quick

Run the full release gate before tagging:

dart run tool/agent/verify.dart release

The release gate includes the Jaspr site build and dart pub publish --dry-run. Releases are tagged as v<version> from the verified commit.

License

MIT. See LICENSE.