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#tooling (43)

Concepts (1)

Claude Code

Anthropic's agentic command-line coding assistant — a tool-using LLM that lives in your terminal, reads and edits your codebase, runs commands, and coordinates multi-step engineering work through natural language.
anthropic agentic cli ai tooling web-researched

Cheat sheets (42)

az — Azure CLI

Cross-platform command-line interface for managing Azure resources, running ARM-based and data-plane operations from a terminal or pipeline.
azure cloud cli devops tooling json ci-cd git web-researched

ccusage — Claude Code & Coding-Agent Token Usage Analyzer

Local-first CLI and TypeScript library that reads JSONL session logs from Claude Code, Codex, and 13 other coding agents to produce daily/weekly/monthly/session/billing-block reports of token spend.
ccusage npm package cli claude-code tokens cost ai tooling web-researched

esbuild — CLI & transform API

Daily-driver reference for esbuild — bundle CLI, transform API, JS API patterns, common build recipes.
esbuild cli bundler build tooling

Jest — CLI and configuration

Day-to-day Jest CLI commands and config patterns — running tests, mocks, snapshots, coverage, watch mode, and migration tips.
jest cli testing tooling

ncu — npm-check-updates CLI for dependency upgrades

The ncu CLI from npm-check-updates rewrites package.json to bump dependency versions — interactive mode, filters, doctor rollback, and workspaces support.
ncu npm upgrade dependencies cli tooling

rollup — CLI & plugin patterns

Daily-driver reference for rollup — CLI commands, multi-format output, plugin chain patterns, library publishing config.
rollup cli bundler build tooling

vercel — Vercel frontend cloud CLI

Vercel's official CLI for deploying frontend apps, managing environments, syncing env vars, tailing logs, and rolling back via alias re-pointing.
vercel deploy edge cli nextjs tooling

vue (@vue/cli) — Legacy Vue project scaffolder

The legacy @vue/cli command-line tool for scaffolding and serving Vue projects — deprecated in favour of create-vue + Vite, retained as reference for existing apps.
vue vue-cli scaffolding deprecated cli tooling

webpack — CLI & config patterns

Daily-driver reference for webpack — CLI commands, dev server, loaders, plugins, code splitting, common config recipes.
webpack cli bundler build tooling

@biomejs/biome — Rust-based unified linter + formatter

Package-level reference for @biomejs/biome on npm — install, single-binary toolchain replacing prettier+eslint, Node support, and alternatives.
npm package linting formatting tooling

commander — Node.js Command-Line Builder

Package-level reference for the commander CLI framework on npm — install, version policy, TypeScript extras, and alternatives.
npm package cli commander tooling

esbuild — Fast JavaScript bundler and transformer

Package-level reference for esbuild on npm — bundle CLI, transform API, JS API, plugin system, and trade-offs vs Rollup, Webpack, and Vite.
npm package bundler build tooling

eslint — Pluggable JS/TS linter

Package-level reference for eslint on npm — install variants, flat config (v9) vs legacy .eslintrc, typescript-eslint, plugin ecosystem, and alternatives.
npm package linting tooling

npm-check-updates — Upgrade package.json dependencies

Package-level reference for npm-check-updates on npm — install, Node support, the ncu binary, doctor mode, workspaces, and where it fits next to npm outdated, taze, and bun update.
npm package ncu upgrade dependencies tooling

oxc-transform — Rust-based JS/TS transformer

Package-level reference for oxc-transform on npm — Rust transformer from the oxc toolchain, TS/JSX support, current API maturity, and place in the ecosystem.
npm package transformer typescript tooling

prettier — Opinionated code formatter

Package-level reference for prettier on npm — install variants, v3 ESM-only switch, plugin model (Tailwind, Astro, etc.), Node support, and alternatives.
npm package formatting tooling

rolldown — Rust-powered Rollup-compatible bundler

Package-level reference for rolldown on npm — Rust rewrite of Rollup, API compatibility goals, current limitations, and the Vite migration path.
npm package bundler build tooling

rollup — ES module bundler for libraries

Package-level reference for rollup on npm — library bundling, multi-format output, plugin ecosystem, tree shaking, and the Rolldown migration.
npm package bundler build tooling

type-fest — Community utility types for TypeScript

Package-level reference for type-fest on npm — install (dev-only, pure types), TS version requirements, recursion limits, and alternatives.
npm package types typescript tooling

vite — Next-generation frontend build tool

Package-level reference for vite on npm — install variants, scaffold templates, plugin ecosystem under @vitejs/plugin-*, framework integrations, and alternatives.
npm package build bundler tooling esm

webpack — Module bundler for JavaScript apps

Package-level reference for webpack on npm — loaders, plugins, code splitting, asset modules, module federation, and the slow migration toward Rspack and Vite.
npm package bundler build tooling

Biome — One toolchain for lint, format, and import sorting

Rust-based all-in-one linter and formatter for JS/TS/JSON/CSS/GraphQL. Single binary, single config, 10-100x faster than ESLint+Prettier.
javascript biome linting formatting tooling

Bun — All-in-One JavaScript Runtime & Toolkit

Bun is a fast all-in-one JavaScript runtime, package manager, bundler, and test runner written in Zig — a drop-in replacement for Node.js and npm with built-in TypeScript and JSX support.
javascript runtime bun cli typescript tooling

Commander.js — Node.js Command-Line Interfaces

Build full-featured Node.js CLIs with positional arguments, typed options, subcommands, auto-generated help, lifecycle hooks, and a distributable bin in package.json.
javascript node cli commander tooling

Day.js — Tiny, immutable date library

Parse, format, manipulate, compare, and convert timezones for dates in JavaScript using Day.js — a 2 kB Moment-compatible alternative with a plugin-based architecture.
javascript dates time library tooling

Deno — Secure JavaScript & TypeScript Runtime

Deno is a secure, modern JavaScript and TypeScript runtime built on V8 with permission-based sandboxing, built-in TypeScript, a curated standard library on JSR, and a complete toolchain (fmt, lint, test, bench, compile).
javascript runtime deno typescript cli tooling

shellcheck — Shell Script Linter

Catch quoting bugs, missing checks, and POSIX portability mistakes in shell scripts. Covers every flag, severity levels, inline directives, CI/pre-commit integration, and the most common rules.
shellcheck shell scripting linting bash cli tooling web-researched

argparse — Stdlib CLI Argument Parser

Parse command-line arguments with Python's stdlib argparse module. Covers positional/optional args, subparsers, nargs, validation, mutually exclusive groups, FileType, env-var fallbacks, and argcomplete.
python stdlib cli scripting tooling

pdb — Python Debugger

Pause, inspect, and step through Python programs with pdb. Covers breakpoint(), command reference, post-mortem debugging, conditional breakpoints, and enhanced alternatives like ipdb, pdbpp, and pudb.
python pdb debugging stdlib repl tooling

pre-commit — Git Hooks for Linters and Formatters

Run linters, formatters, and validators automatically on every git commit. Covers .pre-commit-config.yaml, essential hooks (ruff, mypy, check-yaml), autoupdate, and CI integration.
python pre-commit git-hooks workflow ci code-quality tooling

TypeScript Project References — Composite Builds & Monorepos

Split a TypeScript codebase into composite sub-projects, build them incrementally in dependency order with tsc --build, and integrate the result with bundlers, Turborepo, and Nx.
typescript build monorepo tooling tsconfig

TypeScript Compiler API — Codegen, codemods, and AST walks

Drive the TypeScript compiler programmatically — parse SourceFiles, query the type checker, transform ASTs with the factory, and write codemods that scale across a monorepo.
typescript tooling advanced compiler codegen

TypeScript Modules — module, moduleResolution, .mts / .cts

Deep dive into TypeScript's module system — module/moduleResolution pairs, .mts/.cts file extensions, NodeNext vs Bundler resolution, paths, and tsconfig extends.
typescript modules esm nodenext tooling

ts-node, tsx & Friends — Running TypeScript Without a Build Step

Compare ts-node, tsx, Node 22.6+ --experimental-strip-types, Bun, and Deno for running .ts files directly; pick the right tool, configure watch mode, and avoid the classic ESM / type-strip pitfalls.
typescript runtime tooling node esm

type-fest — Community utility types for TypeScript

Sindre Sorhus's collection of essential TypeScript utility types — PartialDeep, ReadonlyDeep, SetOptional, RequireAtLeastOne, Merge, Tagged, JsonValue, Opaque, and dozens more — so you don't hand-roll them.
typescript library utility-types tooling

diff2html-cli — Beautiful HTML Diffs from the Terminal

Convert unified diffs and git diff output into styled HTML side-by-side or line-by-line diff views from the command line.
diff html cli tooling

ESLint

The standard JavaScript/TypeScript linter. Covers flat config (v9), legacy .eslintrc, running, rules, plugins, TypeScript integration, VS Code, and pre-commit hooks.
javascript eslint linting tooling

Prettier

Opinionated code formatter for JS/TS/CSS/HTML/JSON/Markdown. Covers config options, .prettierignore, VS Code integration, ESLint compatibility, lint-staged, and CI usage.
javascript prettier formatting tooling

Vite

Next-generation frontend build tool using native ES modules for near-instant dev server startup and Rollup for production bundles. Covers setup, config, HMR, env vars, assets, CSS, and plugins.
javascript vite build bundler tooling

Vitest

Vite-native unit test framework with a Jest-compatible API. Covers setup, writing tests, matchers, mocking, timers, async testing, coverage, and UI mode.
javascript vitest testing tooling

TypeScript Installation & Running

Install the TypeScript compiler, run .ts files without a build step using ts-node or tsx, and compile projects with tsc. Covers tsc flags, watch mode, and project references.
typescript installation tsc tooling

tsconfig.json Reference

Complete reference for tsconfig.json — compiler options for type checking, module resolution, output, paths, and JSX. Includes ready-to-use presets for Node 20, browser libraries, and Vite/React apps.
typescript tsconfig compiler tooling