Shims for new ES modules features on top of the basic modules support in browsers (by guybedford)

Es-module-shims Alternatives

Similar projects and alternatives to es-module-shims

NOTE: The number of mentions on this list indicates mentions on common posts plus user suggested alternatives. Hence, a higher number means a better es-module-shims alternative or higher similarity.

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es-module-shims reviews and mentions

Posts with mentions or reviews of es-module-shims. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2024-03-11.
  • ⏰ It’s time to talk about Import Map, Micro Frontend, and Nx Monorepo
    9 projects | | 11 Mar 2024
    For full compatibility and extra features, we usually use the library es-module-shims.
  • JavaScript import maps are now supported cross-browser
    1 project | /r/javascript | 1 May 2023
    You can polyfill for unsupported browsers, it works surprisingly well:
  • Modern SPAs without bundlers, CDNs, or Node.js
    8 projects | | 16 Feb 2023 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
    13 projects | | 16 Feb 2023
  • Modern SPAs without bundlers, CDNs, or NodeJS
    2 projects | /r/webdev | 13 Feb 2023
    If we call the shim a framework, would you be ok with it then?
  • Import maps 101
    3 projects | | 10 Jan 2023
    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+).
  • Everything You Need to Know About JavaScript Import Maps
    4 projects | | 5 Oct 2022
    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:
  • How bad is it to not use a bundler?
    2 projects | /r/webdev | 23 Aug 2022
    i often use es-module-shims so i can load npm packages in browsers without a bundler 😎
  • Fresh – The next-gen web framework
    21 projects | | 12 Jun 2022
    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 ( instead, which worked quite well.

    I kept the demo repo around here, in case it's helpful to anyone:

    The repo itself is quite out of date at this point, but my current project, Reflame, is essentially the spiritual successor:

    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

  • Do you use Import-Map for your client-side ESM?
    3 projects | /r/JSdev | 14 Jan 2022
    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.
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