Eugene Lazutkin

Toolkit to produce a fancy console output (boxes, tables, charts, colors).

Run shell commands and use them in stream pipelines with ease in Node, Deno, Bun. Template tag API, web streams, TypeScript typings, zero dependencies.

Zero-dependency list-based data structures: linked lists (doubly/singly linked, circular), caches (LRU, LFU, FIFO), heaps, queues, stacks, splay trees.

Zero-dependency toolkit for meta programming and OOP: name-casing conversions, property descriptors, aliases, prototype traversal, iterators, deep path access, option merging, and comparator adapters

CLI micro-benchmarking with nonparametric statistics and significance testing.

Binary search for JavaScript done right.

Chain functions as transform streams.

Streams CSV files.

Fork a writable stream into several parallel writable streams.

Playwright-based browser test runner for tape-six. Runs each test file in its own iframe inside headless Chromium. Works with Node, Deno, and Bun.

Puppeteer-based browser test runner for tape-six. Runs each test file in its own iframe inside headless Chrome. Works with Node, Deno, and Bun.

TAP-inspired unit test library for Node, Deno, Bun, and browsers. ES modules, TypeScript, zero dependencies.

Lightweight async task scheduling and concurrency control: schedulers, idle/frame/limited queues, throttle, debounce, batch, page lifecycle, random delays. Browsers, Node.js, Deno, Bun.

Create binary artifacts hosted by github and install them without compiling.

Bindings for RE2: fast, safe alternative to backtracking regular expression engines.

Toolkit to make streamable scanners and parsers.

stream-json is the micro-library of Node.js stream components for creating custom JSON processing pipelines with a minimal memory footprint. It can parse JSON files far exceeding available memory streaming individual primitives using a SAX-inspired API. I