esbuild
JavaScript bundler and minifier built for speed.
TLDR
Bundle a JavaScript application and print to stdout
Bundle a JSX application from stdin
Bundle and minify a JSX application with source maps in production mode
Bundle a JSX application for a comma-separated list of browsers
Bundle a JavaScript application for a specific node version
Bundle a JavaScript application enabling JSX syntax in .js files
Bundle and serve a JavaScript application on an HTTP server
Bundle a list of files to an output directory
SYNOPSIS
esbuild [options] [entry points]
DESCRIPTION
esbuild is a JavaScript bundler and minifier. It packages up JavaScript and TypeScript code for distribution on the web.
Why build another JavaScript build tool? The current build tools for the web are at least an order of magnitude slower than they should be. It is hoped that this project serves as an “existence proof” that JavaScript tooling can be much, much faster.
SIMPLE OPTIONS
- --bundle
-
Bundle all dependencies into the output files
- --define:K=V
-
Substitute K with V while parsing
- --external:M
-
Exclude module M from the bundle
- --format=...
-
Output format (iife | cjs | esm, no default when not bundling, otherwise default is iife when platform is browser and cjs when platform is node)
- --global-name=...
-
The name of the global for the IIFE format
- --jsx-factory=...
-
What to use instead of React.createElement
- --jsx-fragment=...
-
What to use instead of React.Fragment
- --loader:X=L
-
Use loader L to load file extension X, where L is one of: js | jsx | ts | tsx | json | text | base64 | file | dataurl | binary
- --minify
-
Sets all --minify-* flags
- --minify-whitespace
-
Remove whitespace
- --minify-identifiers
-
Shorten identifiers
- --minify-syntax
-
Use equivalent but shorter syntax
- --outdir=...
-
The output directory (for multiple entry points)
- --outfile=...
-
The output file (for one entry point)
- --platform=...
-
Platform target (browser | node | neutral, default browser)
- --serve=...
-
Start a local HTTP server on this host:port for outputs
- --sourcemap
-
Emit a source map
- --splitting
-
Enable code splitting (currently only for esm)
- --summary
-
Print some helpful information at the end of a build
- --target=...
-
Environment target (e.g. es2017, chrome58, firefox57, safari11, edge16, node10, default esnext)
- --watch
-
Watch mode: rebuild on file system changes
ADVANCED OPTIONS
- --banner=...
-
Text to be prepended to each output file
- --charset=utf8
-
Do not escape UTF-8 code points
- --color=...
-
Force use of color terminal escapes (true | false)
- --error-limit=...
-
Maximum error count or 0 to disable (default 10)
- --footer=...
-
Text to be appended to each output file
- --inject:F
-
Import the file F into all input files and automatically replace matching globals with imports
- --keep-names
-
Preserve “name” on functions and classes
- --log-level=...
-
Disable logging (info | warning | error | silent, default info)
- --main-fields=...
-
Override the main file order in package.json (default “browser,module,main” when platform is browser and “main,module” when platform is node)
- --metafile=...
-
Write metadata about the build to a JSON file
- --out-extension:.js=.mjs
-
Use a custom output extension instead of “.js”
- --outbase=...
-
The base path used to determine entry point output paths (for multiple entry points)
- --public-path=...
-
Set the base URL for the “file” loader
- --pure:N
-
Mark the name N as a pure function for tree shaking
- --resolve-extensions=...
-
A comma-separated list of implicit extensions (default “.tsx,.ts,.jsx,.mjs,.cjs,.js,.css,.json”)
- --sourcefile=...
-
Set the source file for the source map (for stdin)
- --sourcemap=external
-
Do not link to the source map with a comment
- --sourcemap=inline
-
Emit the source map with an inline data URL
- --sources-content=false
-
Omit “sourcesContent” in generated source maps
- --tree-shaking=...
-
Set to “ignore-annotations” to work with packages
- --tsconfig=...
-
Use this tsconfig.json file instead of other ones
- --version
-
Print the current version (0.8.39) and exit
EXAMPLES
- esbuild --bundle entry_point.js --outdir=dist --minify --sourcemap
-
# Produces dist/entry_point.js and dist/entry_point.js.map
- esbuild --bundle entry_point.js --outfile=out.js --loader:.js=jsx
-
# Allow JSX syntax in .js files
- esbuild example.js --outfile=out.js --define:RELEASE=true
-
# Substitute the identifier RELEASE for the literal true
- esbuild --minify --loader=ts < input.ts > output.js
-
# Provide input via stdin, get output via stdout
COPYRIGHT
Copyright © 2020 Evan Wallace
License: MIT (Expat)
SEE ALSO
Documentation: https://esbuild.github.io/ Repository: https://github.com/evanw/esbuild
AUTHOR
esbuild is written by Evan Wallace.
This manual page is prepared for Debian by Anthony Fok using information from upstream README.md and output of esbuild --help.