mirror of
https://github.com/oven-sh/bun
synced 2026-02-02 15:08:46 +00:00
Add mention of bunx --bun to README (#2114)
* readme(bunx): add info about `bun --bun x` * chore(formatting): add extension for formatting markdown to avoid a bunch of diffs * chore(formatting): fix JS formatting in README
This commit is contained in:
Derrick Farris
353
README.md
353
README.md
@@ -73,130 +73,176 @@ bun upgrade --canary
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## Table of Contents
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- [Install](#install)
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- [Using bun.js - a new JavaScript runtime environment](#using-bunjs---a-new-javascript-runtime-environment)
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- [Types for bun.js (editor autocomplete)](#types-for-bunjs-editor-autocomplete)
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- [Fast paths for Web APIs](#fast-paths-for-web-apis)
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- [Using bun as a package manager](#using-bun-as-a-package-manager)
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- [Using bun as a task runner](#using-bun-as-a-task-runner)
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- [Creating a Discord bot with Bun](#creating-a-discord-bot-with-bun)
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- [Application Commands](#application-commands)
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- [Using bun with Next.js](#using-bun-with-nextjs)
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- [Using bun with single page apps](#using-bun-with-single-page-apps)
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- [Using bun with Create React App](#using-bun-with-create-react-app)
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- [Using bun with TypeScript](#using-bun-with-typescript)
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- [Transpiling TypeScript with Bun](#transpiling-typescript-with-bun)
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- [Adding Type Definitions](#adding-type-definitions)
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- [Not implemented yet](#not-implemented-yet)
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- [Limitations & intended usage](#limitations--intended-usage)
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- [Upcoming breaking changes](#upcoming-breaking-changes)
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- [Configuration](#configuration)
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- [bunfig.toml](#bunfigtoml)
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- [bun](#bun)
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- [Install](#install)
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- [Upgrade](#upgrade)
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- [Table of Contents](#table-of-contents)
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- [Using bun.js - a new JavaScript runtime environment](#using-bunjs---a-new-javascript-runtime-environment)
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- [Types for bun.js (editor autocomplete)](#types-for-bunjs-editor-autocomplete)
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- [Fast paths for Web APIs](#fast-paths-for-web-apis)
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- [Using bun as a package manager](#using-bun-as-a-package-manager)
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- [Using bun as a task runner](#using-bun-as-a-task-runner)
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- [Using bun as a WebAssembly runner](#using-bun-as-a-webassembly-runner)
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- [Creating a Discord bot with Bun](#creating-a-discord-bot-with-bun)
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- [Application Commands](#application-commands)
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- [Using bun with Next.js](#using-bun-with-nextjs)
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- [Using bun with single-page apps](#using-bun-with-single-page-apps)
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- [Using bun with Create React App](#using-bun-with-create-react-app)
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- [Using bun with TypeScript](#using-bun-with-typescript)
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- [Transpiling TypeScript with Bun](#transpiling-typescript-with-bun)
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- [Adding Type Definitions](#adding-type-definitions)
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- [Not implemented yet](#not-implemented-yet)
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- [Limitations \& intended usage](#limitations--intended-usage)
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- [Upcoming breaking changes](#upcoming-breaking-changes)
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- [Configuration](#configuration)
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- [bunfig.toml](#bunfigtoml)
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- [Loaders](#loaders)
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- [CSS in JS](#css-in-js-bun-dev-only)
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- [When `platform` is `browser`](#when-platform-is-browser)
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- [When `platform` is `bun`](#when-platform-is-bun)
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- [CSS Loader](#css-loader)
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- [CSS runtime](#css-runtime)
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- [Frameworks](#frameworks)
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- [Troubleshooting](#troubleshooting)
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- [bun not running on an M1 (or Apple Silicon)](#bun-not-running-on-an-m1-or-apple-silicon)
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- [error: Unexpected](#error-unexpected)
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- [bun install is stuck](#bun-install-is-stuck)
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- [Unzip is required](#unzip-is-required)
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- [Debian / Ubuntu / Mint](#debian--ubuntu--mint)
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- [RedHat / CentOS / Fedora](#redhat--centos--fedora)
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- [Arch / Manjaro](#arch--manjaro)
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- [OpenSUSE](#opensuse)
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- [Reference](#reference)
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- [`bun install`](#bun-install)
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- [Configuring bun install with `bunfig.toml`](#configuring-bun-install-with-bunfigtoml)
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- [Configuring with environment variables](#configuring-with-environment-variables)
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- [Platform-specific dependencies?](#platform-specific-dependencies)
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- [Peer dependencies?](#peer-dependencies)
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- [Lockfile](#lockfile)
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- [Why is it binary?](#why-is-it-binary)
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- [How do I inspect it?](#how-do-i-inspect-it)
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- [What does the lockfile store?](#what-does-the-lockfile-store)
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- [Why is it fast?](#why-is-it-fast)
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- [Cache](#cache)
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- [npm registry metadata](#npm-registry-metadata)
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- [`bun run`](#bun-run)
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- [`bun create`](#bun-create)
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- [Usage](#usage)
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- [Local templates](#local-templates)
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- [Flags](#flags)
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- [Publishing a new template](#publishing-a-new-template)
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- [Testing your new template](#testing-your-new-template)
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- [Config](#config)
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- [How `bun create` works](#how-bun-create-works)
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- [`bun init`](#bun-init)
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- [`bun bun`](#bun-bun)
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- [Why bundle?](#why-bundle)
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- [What is `.bun`?](#what-is-bun)
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- [Position-independent code](#position-independent-code)
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- [Where is the code?](#where-is-the-code)
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- [Advanced](#advanced)
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- [What is the module ID hash?](#what-is-the-module-id-hash)
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- [`bun upgrade`](#bun-upgrade)
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- [`bun completions`](#bun-completions)
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- [`bun x`](#bun-x)
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- [`Bun.serve` - fast HTTP server](#bunserve---fast-http-server)
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- [Usage](#usage-1)
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- [HTTPS](#https-with-bunserve)
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- [WebSockets](#websockets-with-bunserve)
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- [Error handling](#error-handling)
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- [`Bun.write` – optimizing I/O](#bunwrite--optimizing-io)
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- [`Bun.spawn` - spawn processes](#bunspawn--spawn-a-process)
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- [`Bun.which` - find the path to a bin](#bunwhich--find-the-path-to-a-binary)
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- [bun:sqlite (SQLite3 module)](#bunsqlite-sqlite3-module)
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- [bun:sqlite Benchmark](#bunsqlite-benchmark)
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- [Getting started with bun:sqlite](#getting-started-with-bunsqlite)
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- [`Database`](#database)
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- [Database.prototype.query](#databaseprototypequery)
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- [Database.prototype.prepare](#databaseprototypeprepare)
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- [Database.prototype.exec & Database.prototype.run](#databaseprototypeexec--databaseprototyperun)
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- [Database.prototype.serialize](#databaseprototypeserialize)
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- [Database.prototype.loadExtension](#databaseprototypeloadextension)
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- [Statement](#statement)
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- [Statement.all](#statementall)
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- [Statement.values](#statementvalues)
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- [Statement.get](#statementget)
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- [Statement.run](#statementrun)
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- [Statement.finalize](#statementfinalize)
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- [Statement.toString()](#statementtostring)
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- [Datatypes](#datatypes)
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- [`bun:ffi` (Foreign Functions Interface)](#bunffi-foreign-functions-interface)
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- [Low-overhead FFI](#low-overhead-ffi)
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- [Usage](#usage-2)
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- [Supported FFI types (`FFIType`)](#supported-ffi-types-ffitype)
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- [Strings (`CString`)](#strings-cstring)
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- [Returning a string](#returning-a-string)
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- [Function pointers (`CFunction`)](#function-pointers-CFunction)
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- [Pointers](#pointers)
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- [Passing a pointer](#passing-a-pointer)
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- [Reading pointers](#reading-pointers)
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- [Not implemented yet](#not-implemented-yet-1)
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- [Node-API (napi)](#node-api-napi)
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- [`Bun.Transpiler`](#buntranspiler)
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- [`Bun.Transpiler.transformSync`](#buntranspilertransformsync)
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- [`Bun.Transpiler.transform`](#buntranspilertransform)
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- [`Bun.Transpiler.scan`](#buntranspilerscan)
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- [`Bun.Transpiler.scanImports`](#buntranspilerscanimports)
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- [`Bun.peek` - read a promise same-tick](#bunpeek---read-a-promise-without-resolving-it)
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- [`Bun.dns` - lookup a domain](#bundns---lookup-a-domain)
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- [Module resolution in Bun](#module-resolution-in-bun)
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- [Environment variables](#environment-variables)
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- [Credits](#credits)
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- [License](#license)
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- [Developing bun](#developing-bun)
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- [Dev Container (Linux/Windows)](#dev-container-linuxwindows)
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- [MacOS](#macos)
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- [Build bun (macOS)](#build-bun-macos)
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- [Verify it worked (macOS)](#verify-it-worked-macos)
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- [Troubleshooting (macOS)](#troubleshooting-macos)
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- [Troubleshooting (general)](#troubleshooting-general)
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- [vscode-zig](#vscode-zig)
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- [CSS in JS (bun dev only)](#css-in-js-bun-dev-only)
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- [When `platform` is `browser`](#when-platform-is-browser)
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- [When `platform` is `bun`](#when-platform-is-bun)
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- [CSS Loader](#css-loader)
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- [CSS runtime](#css-runtime)
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- [Frameworks](#frameworks)
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- [Troubleshooting](#troubleshooting)
|
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- [bun not running on an M1 (or Apple Silicon)](#bun-not-running-on-an-m1-or-apple-silicon)
|
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- [error: Unexpected](#error-unexpected)
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- [Unzip is required](#unzip-is-required)
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- [Debian / Ubuntu / Mint](#debian--ubuntu--mint)
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- [RedHat / CentOS / Fedora](#redhat--centos--fedora)
|
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- [Arch / Manjaro](#arch--manjaro)
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||||
- [OpenSUSE](#opensuse)
|
||||
- [bun install is stuck](#bun-install-is-stuck)
|
||||
- [Reference](#reference)
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- [`bun install`](#bun-install)
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||||
- [Configuring bun install with `bunfig.toml`](#configuring-bun-install-with-bunfigtoml)
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- [Configuring with environment variables](#configuring-with-environment-variables)
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- [Platform-specific dependencies?](#platform-specific-dependencies)
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- [Peer dependencies?](#peer-dependencies)
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||||
- [Lockfile](#lockfile)
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- [Why is it binary?](#why-is-it-binary)
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||||
- [How do I inspect it?](#how-do-i-inspect-it)
|
||||
- [What does the lockfile store?](#what-does-the-lockfile-store)
|
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- [Why is it fast?](#why-is-it-fast)
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- [Cache](#cache)
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- [Platform-specific backends](#platform-specific-backends)
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- [npm registry metadata](#npm-registry-metadata)
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- [`bun run`](#bun-run)
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- [Run in Bun's JavaScript runtime](#run-in-buns-javascript-runtime)
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- [`bun --hot`](#bun---hot)
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- [How `bun --hot` works](#how-bun---hot-works)
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- [`bun create`](#bun-create)
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- [Usage](#usage)
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- [Local templates](#local-templates)
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- [Flags](#flags)
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- [Publishing a new template](#publishing-a-new-template)
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- [Testing your new template](#testing-your-new-template)
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- [Config](#config)
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- [How `bun create` works](#how-bun-create-works)
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- [`bun bun`](#bun-bun)
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- [Why bundle?](#why-bundle)
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- [What is `.bun`?](#what-is-bun)
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- [Position-independent code](#position-independent-code)
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- [Where is the code?](#where-is-the-code)
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- [Advanced](#advanced)
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- [What is the module ID hash?](#what-is-the-module-id-hash)
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- [`bun upgrade`](#bun-upgrade)
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- [Canary builds](#canary-builds)
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- [`bun init`](#bun-init)
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- [How is `bun init` different than `bun create`?](#how-is-bun-init-different-than-bun-create)
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- [`bun completions`](#bun-completions)
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- [`bun x` (`bunx`)](#bun-x-bunx)
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- [Loader API](#loader-api)
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- [Loader API Reference](#loader-api-reference)
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- [`builder.onLoad({ filter, namespace?: "optional-namespace" }, callback)`](#builderonload-filter-namespace-optional-namespace--callback)
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- [`Bun.serve` - fast HTTP server](#bunserve---fast-http-server)
|
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- [Usage](#usage-1)
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- [Error handling](#error-handling)
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- [HTTPS with Bun.serve()](#https-with-bunserve)
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- [Streaming files with Bun.serve()](#streaming-files-with-bunserve)
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- [WebSockets with Bun.serve()](#websockets-with-bunserve)
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- [ServerWebSocket vs WebSocket](#serverwebsocket-vs-websocket)
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- [Headers](#headers)
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- [Publish/subscribe](#publishsubscribe)
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- [Backpressure](#backpressure)
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- [Callbacks are per server instead of per socket](#callbacks-are-per-server-instead-of-per-socket)
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- [`Bun.spawn` – spawn a process](#bunspawn--spawn-a-process)
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- [`Bun.which` – find the path to a binary](#bunwhich--find-the-path-to-a-binary)
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- [`Bun.listen` \& `Bun.connect` - TCP/TLS sockets](#bunlisten--bunconnect---tcptls-sockets)
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- [Benchmark-driven API design](#benchmark-driven-api-design)
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- [Hot-reloading TCP servers \& clients](#hot-reloading-tcp-servers--clients)
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- [No buffering](#no-buffering)
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- [`Bun.dns` - lookup a domain](#bundns---lookup-a-domain)
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- [`Bun.peek` - read a promise without resolving it](#bunpeek---read-a-promise-without-resolving-it)
|
||||
- [`Bun.write` – optimizing I/O](#bunwrite--optimizing-io)
|
||||
- [bun:sqlite (SQLite3 module)](#bunsqlite-sqlite3-module)
|
||||
- [bun:sqlite Benchmark](#bunsqlite-benchmark)
|
||||
- [Getting started with bun:sqlite](#getting-started-with-bunsqlite)
|
||||
- [`Database`](#database)
|
||||
- [Database.prototype.query](#databaseprototypequery)
|
||||
- [Database.prototype.prepare](#databaseprototypeprepare)
|
||||
- [Database.prototype.exec \& Database.prototype.run](#databaseprototypeexec--databaseprototyperun)
|
||||
- [Database.prototype.transaction](#databaseprototypetransaction)
|
||||
- [Database.prototype.serialize](#databaseprototypeserialize)
|
||||
- [Database.prototype.loadExtension](#databaseprototypeloadextension)
|
||||
- [Statement](#statement)
|
||||
- [Statement.all](#statementall)
|
||||
- [Statement.values](#statementvalues)
|
||||
- [Statement.get](#statementget)
|
||||
- [Statement.run](#statementrun)
|
||||
- [Statement.finalize](#statementfinalize)
|
||||
- [Statement.toString()](#statementtostring)
|
||||
- [Datatypes](#datatypes)
|
||||
- [`bun:ffi` (Foreign Functions Interface)](#bunffi-foreign-functions-interface)
|
||||
- [Low-overhead FFI](#low-overhead-ffi)
|
||||
- [Usage](#usage-2)
|
||||
- [Supported FFI types (`FFIType`)](#supported-ffi-types-ffitype)
|
||||
- [Strings (`CString`)](#strings-cstring)
|
||||
- [Returning a string](#returning-a-string)
|
||||
- [Function pointers (`CFunction`)](#function-pointers-cfunction)
|
||||
- [Callbacks (`JSCallback`)](#callbacks-jscallback)
|
||||
- [Pointers](#pointers)
|
||||
- [Passing a pointer](#passing-a-pointer)
|
||||
- [Reading pointers](#reading-pointers)
|
||||
- [Not implemented yet](#not-implemented-yet-1)
|
||||
- [Node-API (napi)](#node-api-napi)
|
||||
- [`Bun.Transpiler`](#buntranspiler)
|
||||
- [`Bun.Transpiler.transformSync`](#buntranspilertransformsync)
|
||||
- [`Bun.Transpiler.transform`](#buntranspilertransform)
|
||||
- [`Bun.Transpiler.scan`](#buntranspilerscan)
|
||||
- [`Bun.Transpiler.scanImports`](#buntranspilerscanimports)
|
||||
- [Module resolution in Bun](#module-resolution-in-bun)
|
||||
- [Module loading](#module-loading)
|
||||
- [Module resolution](#module-resolution)
|
||||
- [Bun's Module Resolution Algorithm](#buns-module-resolution-algorithm)
|
||||
- [Resolving packages](#resolving-packages)
|
||||
- [Prefer offline](#prefer-offline)
|
||||
- [Prefer latest](#prefer-latest)
|
||||
- [Resolving modules](#resolving-modules)
|
||||
- [Frequently asked questions](#frequently-asked-questions)
|
||||
- [Environment variables](#environment-variables)
|
||||
- [Profiling Bun](#profiling-bun)
|
||||
- [Benchmarking `Bun.serve`](#benchmarking-bunserve)
|
||||
- [Measuring memory usage](#measuring-memory-usage)
|
||||
- [JavaScript heap stats](#javascript-heap-stats)
|
||||
- [JavaScript heap snapshot](#javascript-heap-snapshot)
|
||||
- [Native heap stats](#native-heap-stats)
|
||||
- [Credits](#credits)
|
||||
- [License](#license)
|
||||
- [Developing bun](#developing-bun)
|
||||
- [Dev Container (Linux/Windows)](#dev-container-linuxwindows)
|
||||
- [Visual Studio Code](#visual-studio-code)
|
||||
- [Other editors and CLI](#other-editors-and-cli)
|
||||
- [In the dev container](#in-the-dev-container)
|
||||
- [MacOS](#macos)
|
||||
- [Install Zig (macOS)](#install-zig-macos)
|
||||
- [Build bun (macOS)](#build-bun-macos)
|
||||
- [Verify it worked (macOS)](#verify-it-worked-macos)
|
||||
- [JavaScript builtins](#javascript-builtins)
|
||||
- [Code generation scripts](#code-generation-scripts)
|
||||
- [Modifying ESM core modules](#modifying-esm-core-modules)
|
||||
- [Troubleshooting (macOS)](#troubleshooting-macos)
|
||||
- [vscode-zig](#vscode-zig)
|
||||
- [Troubleshooting (general)](#troubleshooting-general)
|
||||
|
||||
## Using bun.js - a new JavaScript runtime environment
|
||||
|
||||
@@ -518,15 +564,15 @@ bun
|
||||
By default, `bun` will look for any HTML files in the `public` directory and serve that. For browsers navigating to the page, the `.html` file extension is optional in the URL, and `index.html` will automatically rewrite for the directory.
|
||||
|
||||
Here are examples of routing from `public/` and how they’re matched:
|
||||
| Dev Server URL | File Path |
|
||||
|----------------|-----------|
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||||
| /dir | public/dir/index.html |
|
||||
| / | public/index.html |
|
||||
| /index | public/index.html |
|
||||
| /hi | public/hi.html |
|
||||
| /file | public/file.html |
|
||||
| Dev Server URL | File Path |
|
||||
| ----------------- | ----------------------- |
|
||||
| /dir | public/dir/index.html |
|
||||
| / | public/index.html |
|
||||
| /index | public/index.html |
|
||||
| /hi | public/hi.html |
|
||||
| /file | public/file.html |
|
||||
| /font/Inter.woff2 | public/font/Inter.woff2 |
|
||||
| /hello | public/index.html |
|
||||
| /hello | public/index.html |
|
||||
|
||||
If `public/index.html` exists, it becomes the default page instead of a 404 page, unless that pathname has a file extension.
|
||||
|
||||
@@ -1451,7 +1497,7 @@ globalThis.reloadCount = reloadCount + 1;
|
||||
|
||||
const reloadServer = (globalThis.reloadServer ||= (() => {
|
||||
let server;
|
||||
return (handler) => {
|
||||
return handler => {
|
||||
if (server) {
|
||||
// call `server.reload` to reload the server
|
||||
server.reload(handler);
|
||||
@@ -1863,20 +1909,44 @@ This command installs completions for `zsh` and/or `fish`. It runs automatically
|
||||
|
||||
If you want to copy the completions manually, run `bun completions > path-to-file`. If you know the completions directory to install them to, run `bun completions /path/to/directory`.
|
||||
|
||||
### `bun x`
|
||||
### `bun x` (`bunx`)
|
||||
|
||||
This command runs a given binary from `npm`. It will look for the binary to run in any installed modules in the current file tree, and install the package in a temporary directory to run if its not available.
|
||||
This command runs a given binary from `npm`. It will look for the executable to run in any installed modules in the current file tree, and install the package in a temporary directory to run if its not available.
|
||||
|
||||
> Run vendor package executable
|
||||
|
||||
> Run vendor package
|
||||
```bash
|
||||
bun x vendor-package
|
||||
```
|
||||
|
||||
> Run a specific version of vendor package
|
||||
Bun also provides a shortened alias `bunx` which you can use instead.
|
||||
|
||||
> Run package executable with `bunx` alias
|
||||
|
||||
```bash
|
||||
bunx vendor-package
|
||||
```
|
||||
|
||||
> Run a specific version of package executable
|
||||
|
||||
```bash
|
||||
bun x vendor-package@1.0.2
|
||||
```
|
||||
|
||||
**NOTE: By default, `bun x` currently runs JS scripts in `Node`, but you can force running them in `Bun` by appending the `--bun` flag to the `bun` command. This will be changed in the future when more Node compatibility is achieved.**
|
||||
|
||||
> Force a package executable to run in Bun
|
||||
|
||||
```bash
|
||||
bun --bun x vendor-package
|
||||
```
|
||||
|
||||
or:
|
||||
|
||||
```bash
|
||||
bunx --bun vendor-package
|
||||
```
|
||||
|
||||
## Loader API
|
||||
|
||||
Bun v0.1.11 introduces custom loaders.
|
||||
@@ -1900,7 +1970,7 @@ plugin({
|
||||
const { load } = require("js-yaml");
|
||||
const { readFileSync } = require("fs");
|
||||
// Run this function on any import that ends with .yaml or .yml
|
||||
builder.onLoad({ filter: /\.(yaml|yml)$/ }, (args) => {
|
||||
builder.onLoad({ filter: /\.(yaml|yml)$/ }, args => {
|
||||
// Read the YAML file from disk
|
||||
const text = readFileSync(args.path, "utf8");
|
||||
|
||||
@@ -3342,7 +3412,7 @@ db.exec(
|
||||
);
|
||||
|
||||
const insert = db.prepare("INSERT INTO cats (name, age) VALUES ($name, $age)");
|
||||
const insertMany = db.transaction((cats) => {
|
||||
const insertMany = db.transaction(cats => {
|
||||
for (const cat of cats) insert.run(cat);
|
||||
});
|
||||
|
||||
@@ -3369,11 +3439,11 @@ const newExpense = db.prepare(
|
||||
"INSERT INTO expenses (note, dollars) VALUES (?, ?)",
|
||||
);
|
||||
const insert = db.prepare("INSERT INTO cats (name, age) VALUES ($name, $age)");
|
||||
const insertMany = db.transaction((cats) => {
|
||||
const insertMany = db.transaction(cats => {
|
||||
for (const cat of cats) insert.run(cat);
|
||||
});
|
||||
|
||||
const adopt = db.transaction((cats) => {
|
||||
const adopt = db.transaction(cats => {
|
||||
newExpense.run("adoption fees", 20);
|
||||
insertMany(cats); // nested transaction
|
||||
});
|
||||
@@ -4023,7 +4093,7 @@ When you're done with a JSCallback, you should call `close()` to free the memory
|
||||
For a slight performance boost, directly pass `JSCallback.prototype.ptr` instead of the `JSCallback` object:
|
||||
|
||||
```ts
|
||||
const onResolve = new JSCallback((arg) => arg === 42, {
|
||||
const onResolve = new JSCallback(arg => arg === 42, {
|
||||
returns: "bool",
|
||||
args: ["i32"],
|
||||
});
|
||||
@@ -5158,6 +5228,7 @@ On fish that looks like `fish_add_path (brew --prefix llvm@15)/bin`
|
||||
#### Install Zig (macOS)
|
||||
|
||||
Install the version of Zig referenced in the [`Dockerfile`](./Dockerfile) using [zigup](https://github.com/marler8997/zigup). For example:
|
||||
|
||||
```bash
|
||||
zigup 0.11.0-dev.1393+38eebf3c4
|
||||
```
|
||||
|
||||
Reference in New Issue
Block a user