evaluate statically-analyzable expressions
Simple JavaScript expression evaluator
Evaluate node require() module content directly
Mathematical expression evaluator fork with exports map, prototype pollution and code injection security fixes
A flexible math expression evaluator
require or eval modules
Mark scopes for deopt which contain a direct eval call
JavaScript expression parsing and evaluation.
Get callsites from the V8 stack trace API
Alias for eval global.
Safely evaluate JavaScript (estree) expressions, sync and async.
A simple cache for a few of the JS Error constructors.
Eval a string with a passed scope
Embeddable spreadsheet engine — parse, evaluate & mutate Excel workbooks in the browser. 320+ functions, Arrow-powered.
A library for teleporting rich data to another place.
decycle your json
TypeScript execution environment and REPL for node.js, with source map support
Mathematical expression evaluator
Parse Content Security Policy directives.
Adds support for environments that disallow support of new Function
Safer version of eval()
Build and evaluate JavaScript strings safely via tagged template literals
Fastest event emitter in the world
Decision-grade evals for agents: one call — selfImprove (closed loop) or analyzeRuns (observed runs) — returns a decision packet: lift CI, judge calibration, contamination check, failure clusters, cost-quality Pareto, ranked actions. The scoring and ship-
High-performance Arrow-backed Excel formula engine with dependency graph and incremental recalculation
Proc macros for authoring Formualizer built-ins (caps, schemas, and validation)
Ergonomic workbook API over the Formualizer engine (sheets, loaders, staging, undo/redo)
Embeddable spreadsheet engine — parse, evaluate & mutate Excel workbooks from Rust
Core value, reference, and error types shared across the Formualizer parser and engine
High-performance Excel/OpenFormula tokenizer + parser with a stable AST surface