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parcel-plugin-goodie-bag

A polyfill for Promise and fetch for Parcel v1, to keep it working for those browsers without it.

Looking at you Internet Explorer.

Parcel v1 Only!

Why This Is Needed

TL;DR: multiple bundle support in Parcel, such as using the ability to require html partial files, makes direct use of both the Promise and fetch APIs, directly.

This plugin is born of my frustaration with the scenario outline in parcel issue #2364. This requires additional intervention, since the native requirement of the potentially un-polyfilled APIs is prior to any polyfill via babel-polyfill and isn't something that can be influenced inside the application source itself; at least not without convoluted efforts.

Installation

  • npm install --save-dev parcel-plugin-goodie-bag

Usage

No additional configuration required. If your app is being bundled by parcel and you have this plugin installed, the processed application will build with:

  • the *.html containing a script tag in its head pointing to the "goodie bag` script (the two polyfills)
  • a "goodie bag" script file, placed in the destination directory (outDir to parcel, defaults to dist)
  • the script tag will respect your configured publicUrl option with Parcel (e.g.- prefixed with default / or no root slash in the case of .)

Note: If you're not processing your index.html file through parcel, for example merely bundling the JS directly, I believe you're missing out on some of the super powers of parcel. However, if that's your workflow and you're missing out on this plugin's functionality, please consult the discussion and resolution outlined in this issue.

In Action

I made use of a simple reproducible repository I had set up for tracking this issue.

Before After
before after

Contributing

If you have something to contribute, please do. If you're uncertain as to whether or not to open a PR, feel free to ask; just open an issue and mark that it's a question.

Contributors

Thanks goes to these wonderful people (emoji key):

Eric McCormick
Eric McCormick

📝 🐛 💻 🖋 📖 💡 🤔 🚧 👀 📓
Joe Withey
Joe Withey

💻 🤔
Klaus Breyer
Klaus Breyer

🐛 🤔

This project follows the all-contributors specification. Contributions of any kind welcome!

History

Parcel is an amazing bundler with superpowers. The fact that my ability to support IE(11), a requirement for my day job, was hampered by this limitation of a multiple bundle scenario meant that I had to solve the problem myself. It is my hope that one day the configuration of Parcel will allow for the surfacing of base level APIs, such as Promise and fetch to make this plugin unnecessary. Until then, I'll keep this available to provide some sanity.

Credits

License

MIT

About

provides the Promise and fetch goodies needed for IE(11) support w/ parcel bundle loading

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