es-module-shims
esbuild
es-module-shims | esbuild | |
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13 | 325 | |
1,488 | 37,307 | |
- | - | |
6.5 | 9.5 | |
12 days ago | 7 days ago | |
JavaScript | Go | |
MIT License | MIT License |
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es-module-shims
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⏰ It’s time to talk about Import Map, Micro Frontend, and Nx Monorepo
For full compatibility and extra features, we usually use the library es-module-shims.
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JavaScript import maps are now supported cross-browser
You can polyfill for unsupported browsers, it works surprisingly well: https://github.com/guybedford/es-module-shims
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Modern SPAs without bundlers, CDNs, or Node.js
https://github.com/guybedford/es-module-shims has a polyfill. (But it is fairly large: 53KB raw, 15KB gzipped, 32KB minified, 11KB minified+gzipped. It’s providing a lot of likely-unnecessary functionality. I’d prefer a stripped-down polyfill that can also be lazily-loaded, controlled by a snippet of at most a few hundred bytes that you can drop into the document, only loading the polyfill in the uncommon case that it’s needed—like how five years ago as part of modernising some of the code of Fastmail’s webmail, I had it fetch and execute core-js before loading the rest iff !Object.values (choosing that as a convenient baseline), so that the cost to new browsers of supporting old browsers was a single trivial branch, and maybe fifty bytes in added payload.)
- Writing JavaScript without a build system
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Modern SPAs without bundlers, CDNs, or NodeJS
If we call the shim a framework, would you be ok with it then?
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Import maps 101
If you want import maps to be supported in any browser, there is an ES Module Shims polyfill which is compatible with any browser that has baseline ES Module Support (i.e. Edge 17+, Firefox 60+, Safari 10.1+, and Chrome 61+).
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Everything You Need to Know About JavaScript Import Maps
An example of a polyfill that can be used is the ES Module Shims polyfill that adds support for import maps and other new module features to any browser with baseline support for ES modules (about 94% of browsers). All you need to do is include the es-module-shim script in your HTML file before your import map script:
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How bad is it to not use a bundler?
i often use es-module-shims so i can load npm packages in browsers without a bundler 😎
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Fresh – The next-gen web framework
I explored using client-side service workers for build-less deployment workflows a while back, but the blocker was the initial visit when the service worker hasn't been installed yet. Ended up using es-module-shim's fetch hook (https://github.com/guybedford/es-module-shims#fetch-hook) instead, which worked quite well.
I kept the demo repo around here, in case it's helpful to anyone: https://github.com/lewisl9029/buildless-hot-reload-demo.
The repo itself is quite out of date at this point, but my current project, Reflame, is essentially the spiritual successor: https://reflame.app/
Reflame has the same ideals of achieving the developer experience I've always wanted for building client rendered React apps:
- instant production deployments (usually <200ms)
- instant preview environments that match production in pretty much every imaginable way (including the URL), that can also be flipped into development mode for fast-refresh (for the seamless feedback loop we're used to in local dev) and dev-mode dependencies (for better error messaging, etc)
- close-to-instant browser tests (1-3 seconds) that enable image snapshot comparisons that run with maximum parallelism and only rerun when their dependency graphs change
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Do you use Import-Map for your client-side ESM?
The problem of course is that browser-support for Import Maps is sadly lacking (only Chrome/Chromium-based at time of writing). There are tricks/shims to get around this, like ES-Module-Shims. I find these approaches to be a little too intrusive, personally.
esbuild
- Esbuild implements the JavaScript decorators proposal
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How and why do we bundle zx?
At first we wanted to just get rid of all the helper utilities. Keep only the kernel, but this would mean a loss of backward compatibility. We needed some efficient code processing instead with recomposition and tree-shaking. We needed a bundler. But which one? Our testing approach relies on targets, not sources. We rebuilt the project frequently, speed was critical requirement. In essence, we chose a solution from a couple of among all available alternatives: esbuild and parcel. Esbuild won. Specifically in our case, it proved to be more productive and customizable.
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Use Notion as your CMS along with Next.js
During my search for deploying Lambdas via GitHub actions, I came across a tutorial that utilized ncc for converting TypeScript and bundling. While ncc is effective, I discovered esbuild, which proved to be significantly faster and perfectly suited to my requirements.
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⏰ It’s time to talk about Import Map, Micro Frontend, and Nx Monorepo
The advent of esbuild, the native support for ES Modules in browsers, the widespread adoption of import map, the emergence of tools like Native Federation, and the Nx ecosystem all combine to forge a flexible and well-maintained Micro Frontend Architecture.
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JS Toolbox 2024: Bundlers and Test Frameworks
EsBuild is a relatively new, blazing-fast JavaScript bundler and minifier. It stands out for its high performance, significantly speeding up the build process in development pipelines.
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Build a Vite 5 backend integration with Flask
Unlike Webpack, the Vite DevServer only compiles files when they are requested. It leverages ES module imports, which allow JS files to import other files without needing to bundle them together during development. When one file changes, only that file needs to be re-compiled, and the rest can remain unchanged. Project files are compiled with Rollup.js. Third-party dependencies in node_modules are pre-compiled using the ultra-fast esbuild bundler for maximum speed, and they are cached until the dependency version changes. Vite also provides a client script for hot module reloading.
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SSR React in Go
Use esbuild to build the React code into a form executable on both the server and client sides.
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Effortless Function as a Service: A Simple Guide to Implementing it with Query
The functions will bundle using esbuild. For that, it is required to install esbuild globally:
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How to run TypeScript natively in Node.js with TSX
TSX is the newest and most improved version of our ts-node, using ESBuild to transpile TS files to JS very quickly. The most interesting part is that TSX was developed to be a complete replacement for Node, so you can actually use TSX as a TypeScript REPL, if you install it globally with npm i -g tsx, just run tsx in your terminal and you can write TSX natively. But what's even cooler is that you can load TSX for all TypeScript files using --loader tsx when you run your file. For example, let's say we have this file called index.ts:
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Quick Summary of Angular 17
esbuild plus Vite is out of developer preview and enabled by default, yielding 67%, 87%, 80% speed improvements for build time, hybrid build time and hybrid serve time respectively.
What are some alternatives?
import-maps - How to control the behavior of JavaScript imports
swc - Rust-based platform for the Web
hyperscript - Create HyperText with JavaScript.
vite - Next generation frontend tooling. It's fast!
Rust Language Server - Repository for the Rust Language Server (aka RLS)
Rollup - Next-generation ES module bundler
stampino-element
webpack - A bundler for javascript and friends. Packs many modules into a few bundled assets. Code Splitting allows for loading parts of the application on demand. Through "loaders", modules can be CommonJs, AMD, ES6 modules, CSS, Images, JSON, Coffeescript, LESS, ... and your custom stuff.
import-remap - Rewrite ES module import specifiers using an import-map.
parcel - The zero configuration build tool for the web. 📦🚀
mercury - A truly modular frontend framework
terser - 🗜 JavaScript parser, mangler and compressor toolkit for ES6+