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Declarative data processing for Dart.

Reify #

Reify is a declarative data processing toolkit for Dart. It provides a pure, composable, combinator-based interface for local, managed data mutations. Reify is designed to be flexible and can be used for various purposes such as static site generators, build systems, and code generators.

Table of Contents #

Features #

  • Declarative Data Processing: Manage data mutations through a pure, composable, combinator-based interface.
  • Flexible Use Cases: Suitable for static site generators, build systems, code generators, and more.
  • Combinator Interface: Provides a set of combinators for defining complex data processing pipelines in a concise and readable manner.
  • CLI Bootstrapping: Provides a function to bootstrap CLI with arguments handling and optional hot reload in debug mode.
  • Nix Build System: Utilizes Nix for efficient and reproducible builds.
  • Live and Hot Reload: Incorporates Dart VM-provided live and hot reload functionality.

Getting Started #

To use Reify in your Dart project, follow these steps:

  1. Create a new Dart project.
  2. Add the Reify package in your pubspec.yaml file.
  3. Optionally, start the development environment using nix develop, and utilize lib.watch function from flake.nix.

Usage #

Static Site Generators #

Reify can be used to create static site generators by processing Markdown files and generating HTML output.

import 'package:reify/reify.dart';

void main(List<String> arguments) => generate(
      arguments,
      (context) => concurrent({
        copy('static/**.txt'),
        write<RawItem, String>((
          input: 'md/**.md',
          parse: (raw) => raw,
          output: (data) => data.map((e) => (
                path: setExtension(basenameWithoutExtension(e.path), '.html'),
                data: e.data * 2,
              )),
        )),
        create((_) async* {
          yield (
            path: 'timestamp.json',
            data: '"${DateTime.now().toIso8601String()}"',
          );
        })
      }),
    );

Build Systems #

Reify can be integrated into build systems to manage and automate various build tasks.

Code Generators #

Reify can be used to create code generators that process input files and generate code based on predefined rules.

CLI Bootstrapping #

Reify provides a function to bootstrap CLI with arguments handling and optional hot reload in debug mode.

import 'package:reify/reify.dart';

void main(List<String> arguments) => generate(
      arguments,
      (context) => concurrent({
        // Define your rules here
      }),
    );
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Declarative data processing for Dart.

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Documentation

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License

MIT (license)

Dependencies

args, glob, intl, mark, path, pure, stream_transform, vm_service, watcher, yaml

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