Utilities

• Data Structures

  • dlv - Deep property access utility.
  • klona - Deep clone utility.
  • dset - Deep property set utility.
  • dequal - Deep equal utility.
  • pkg-types - TypeScript types and utilities for package.json files.
  • sort-object-keys - Sort object keys with optional key list specification.
  • neotraverse - Traverse and transform objects by visiting every node on a recursive walk.

• ID Generation

  • nanoid - URL-friendly unique string ID generator.

• Assertions

  • tiny-invariant - A function for assertions.

• Parsing

  • parse5 - Fast full-featured HTML parser.
  • yaml - JavaScript parser and stringifier for YAML.

• HTTP / URLs

  • ofetch - Fetch API implementation for node, browser, and workers.
  • milliparsec - Body parser for web servers.
  • fast-querystring - Alternative to legacy `querystring` module.
  • picoquery - Library for parsing and serializing query strings.

• Command Line Interfaces (CLI)

  • clack - CLI framework for building interactive prompts.
  • sade - CLI arguments and usage builder.
  • mri - Command line arguments parser.
  • ansis - Terminal output formatting with ANSI colors and styles.
  • picocolors - Terminal output formatting with ANSI colors and styles.
  • nanospinner - CLI spinner library.
  • fast-slice-ansi - String slicing with ANSI support.
  • fast-wrap-ansi - Word wrapping with ANSI support.
  • fast-string-width - Terminal string visual width utility.
  • picospinner - CLI spinner library.

• Project Tools

  • wireit - Upgrade npm scripts with enhanced capabilities.
  • taze - CLI tool for keeping dependencies up to date.
  • premove - Utility to remove items recursively.
  • cpx2 - Copy file globs with optional change watching.
  • npm-run-all2 - CLI tool to run multiple npm scripts in parallel or sequential.
  • actions-up - CLI tool for keeping GitHub Actions up to date.
  • multiocular - Review dependency changes.
  • knip - Find unused files, dependencies and exports in TypeScript and JavaScript projects.

• Test Data

  • @faker-js/faker - Generate fake contextual data.

• File System

  • fdir - Directory crawler and globbing library.
  • fflate - Compression and decompression library.
  • empathic - Utilities for file system traversal.
  • tinyglobby - File system globbing library.

• Build Tools

  • rolldown - Fast bundler (`rollup` alternative).
  • tsdown - Library bundler based on Rolldown.
  • zshy - General purpose, bundler-free build tool.

• Configuration

  • lilconfig - Configuration loader.
  • confbox - Zero-dependency parsing and serialization for YAML, TOML, JSONC, JSON5, INI, and JSON.

• ESLint Plugins

  • @stylistic/eslint-plugin-jsx - JSX stylistic rules for ESLint.
  • eslint-plugin-es-x - ESLint plugin for ECMAScript features.
  • eslint-plugin-n - ESLint rules for Node.js.
  • eslint-plugin-import-x - Import validation rules.
  • @eslint-react/eslint-plugin - ESLint plugin for React.

• Git Hooks

  • nano-staged - Tool to run commands for modified, staged, and committed git files.

• Text Processing

  • unicode-segmenter - Implementation of Unicode Text Segmentation (UAX #29).

• Process Execution

  • tinyexec - Package for executing commands in Node.js.