A string manipulation toolbox, featuring a string formatter (inspired by sprintf), a variable inspector (output featuring ANSI colors and HTML) and various escape functions (shell argument, regexp, html, etc).
Tiny zero-dependency pretty printer for the terminal
An Effect library that produces the string representation of any JavaScript value. Similar to util.inspect but with extensive configurability: treeifying, coloring, sorting, filtering, choosing what to display and how to display it... Handles all Effect
Pluggable instrumentation for async data functions ( observe() / @observe() + connectors). Ships with MCP stdio server for live inspection of results by AI agents (Claude, Cursor, etc.). Works in Bun, Next.js, and plain Node.js apps.