esbuild
Advanced tools
Package description
esbuild is a fast JavaScript bundler and minifier. It compiles TypeScript and JavaScript into a single file, minifies it, and can also handle CSS and image assets. It's designed for speed and efficiency, utilizing parallelism and native Go code to achieve its performance.
Bundling JavaScript
This code bundles 'app.js' and its dependencies into a single file 'out.js'.
require('esbuild').build({
entryPoints: ['app.js'],
bundle: true,
outfile: 'out.js'
}).catch(() => process.exit(1))Minifying JavaScript
This code minifies 'app.js' to reduce file size and improve load times.
require('esbuild').build({
entryPoints: ['app.js'],
minify: true,
outfile: 'out.js'
}).catch(() => process.exit(1))Transpiling TypeScript
This code compiles a TypeScript file 'app.ts' into JavaScript and bundles it into 'out.js'.
require('esbuild').build({
entryPoints: ['app.ts'],
bundle: true,
outfile: 'out.js'
}).catch(() => process.exit(1))Serving files for development
This code starts a local server to serve files from the 'public' directory and bundles 'app.js' into 'public/out.js'.
require('esbuild').serve({
servedir: 'public',
port: 8000
}, {
entryPoints: ['app.js'],
bundle: true,
outfile: 'public/out.js'
}).then(server => {
// Server started
})Webpack is a powerful and widely-used module bundler. It offers a rich plugin ecosystem and a highly configurable build process. Compared to esbuild, webpack is more mature with more features but is generally slower due to its JavaScript-based architecture.
Rollup is another JavaScript module bundler that focuses on producing efficient bundles for modern module formats like ES modules. It's known for its tree-shaking capabilities. Rollup is typically faster than webpack but slower than esbuild.
Parcel is a web application bundler that offers zero configuration out-of-the-box. It's faster than webpack and rollup but generally not as fast as esbuild. Parcel has a simpler user experience but may not be as flexible for complex configurations.
Terser is a JavaScript parser, mangler, and compressor toolkit for ES6+. It's often used for minifying JavaScript code. While esbuild also minifies code, terser is a dedicated tool for this purpose and can be used alongside other bundlers.
Changelog
0.18.20
Support advanced CSS @import rules (#953, #3137)
CSS @import statements have been extended to allow additional trailing tokens after the import path. These tokens sort of make the imported file behave as if it were wrapped in a @layer, @supports, and/or @media rule. Here are some examples:
@import url(foo.css);
@import url(foo.css) layer;
@import url(foo.css) layer(bar);
@import url(foo.css) layer(bar) supports(display: flex);
@import url(foo.css) layer(bar) supports(display: flex) print;
@import url(foo.css) layer(bar) print;
@import url(foo.css) supports(display: flex);
@import url(foo.css) supports(display: flex) print;
@import url(foo.css) print;
You can read more about this advanced syntax here. With this release, esbuild will now bundle @import rules with these trailing tokens and will wrap the imported files in the corresponding rules. Note that this now means a given imported file can potentially appear in multiple places in the bundle. However, esbuild will still only load it once (e.g. on-load plugins will only run once per file, not once per import).
Readme
This is a JavaScript bundler and minifier. See https://github.com/evanw/esbuild and the JavaScript API documentation for details.
FAQs
An extremely fast JavaScript and CSS bundler and minifier.
The npm package esbuild receives a total of 16,187,948 weekly downloads. As such, esbuild popularity was classified as popular.
We found that esbuild demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 2 open source maintainers collaborating on the project.
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