deerwork-ai
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deer-workflow
An open-source Dynamic Workflow runtime that combines deterministic TypeScript orchestration with replaceable Agent runtimes.
AI repository intelligence
FR-AI / ANALYSISWhy it is worth attention
It is a byte-accurate port of a canonical PHP library with verified golden vectors, achieves 100% test coverage, and supports a vast range of languages with both universal and language-specific readability formulas.
Who it is for
- Web developers integrating readability scoring into content management or analysis tools
- Linguists and researchers analyzing text complexity across multiple languages
- Educators building automated reading level assessment for learning platforms
- Localization engineers evaluating translation difficulty and document accessibility
Use cases
- Assessing the readability of online articles, documentation, or user-generated content
- Grading reading difficulty in multilingual educational software or e-books
- Automatically flagging overly complex text in legal, medical, or technical documents
- Comparing readability scores across different translations or language versions of the same content
Strengths
- Zero runtime dependencies, making it lightweight and easy to install and bundle
- 100% code coverage enforced by rigorous testing and golden vector parity checks
- Supports 86 languages across 19 writing systems with 17 formulas, including 5 universal ones
- Provides a consistent API with TypeScript types and dual ESM/CJS module support
Considerations
- Requires Node.js version 18 or higher, limiting use in older environments
- Syllable counting in composite mode may be approximate for some languages due to heuristic fallback
- Some formulas (e.g., Dale-Chall and Spache) use simplified syllable-based heuristics rather than original word lists
README quick start
Installation
Description
Multilingual readability engine for Node.js/TypeScript - 86 languages, 17 formulas, TeX (Frank M. Liang) syllable counting. Zero runtime deps, dual ESM+CJS. Byte-accurate port of the PHP ReadSight library.
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