fundamentoolTypeScript utility library

Universal utilities, async helpers, type predicates, RPC, JSONL, Node.js tools and more.

Universal utilities

130+ utility functions — string, object, array, async, type predicates. Tree-shaking friendly.

Async iteration, parallel execution, sequencing, debounce with Promises.

37 isXxx() type guards with full TypeScript narrowing.

Type-safe bidirectional RPC over any message channel — Worker, WebSocket, iframe.

Parse, stringify and stream JSON Lines format.

File I/O (CSV, JSON, JSONL), crypto hashing, directory scanning.