HyperFormula is an open-source headless spreadsheet for business web apps. It comes with over 400 formulas, CRUD operations, undo-redo, clipboard support, and sorting.
A small DSL/interpreter that can be used to evaluate simple expressions
a lightweight and precise math expression parser and evaluator for JavaScript and TypeScript
cel-js is a Common Expression Language (CEL) evaluator for JavaScript
An interpreter for Typescript that can evaluate an arbitrary Node within a Typescript AST
A highly configurable custom expression tree evaluator
🐉 JavaScript expression tokenizer and evaluator
🌴 An engine that can compile and evaluate expressions written in typescript
Term Rewriting System
A nodejs autoloader for typescript
Customizable, safe evaluator of JavaScript-like expressions.
Zero-dependency, fully auditable TypeScript library that scores a RAG answer inline at query time. No LLM calls. No offline pipeline. Uses signals already in your retrieval stack. Output: a typed 0–100 scorecard with per-dimension breakdowns.
JavaScript (TypeScript) math expression evaluator library
A very simple implementation of an eval command.
Defensive /goal condition templates for Claude Code · 4-piece recipe · 6 patterns · 8 NEVER rules · 11-check linter · self-validating CI · MIT
Verifier of poker hand
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