Sourced from unfetch's releases.

4.2.0

• Fix unintentional use of arrow functions in some 4.1.0 builds (#138, thanks @​simon04!)
• Fix usage in Web Workers (#109)
• .json() parse errors return a rejected Promise instead of throwing (#112, thanks @​sunsean!)
• Improved TypeScript typings (#117 & #121, thanks @​Andarist & @​0x80!)
• Add support for passing URL objects to fetch() (#141, thanks @​Edorka for the tip!)

Please make sure to also update to isomorphic-unfetch@3.1.0, which includes a security fix for node-fetch. (thanks @​sakito21)

4.1.0

• Fix TypeScript definitions (#99 #105 - thanks @​stephenmathieson & @​Fnatte!)
• Drop another 20 bytes, now 478b 🐕

4.0.1

Quick publishing fix.

4.0.0

🦄 Small breaking change for awesome ponyness:

• unfetch is now a pure ponyfill.
• unfetch/polyfill is now the polyfill version (even smaller than the ponyfill!)
• All modules are shipped in all formats, and the polyfill is now < 500b.
• Also a little bugfix for IE11 (#85, thanks @​khusa)

TL;DR: require('unfetch') no longer returns window.fetch when it exists. For that, use unfetch/polyfill.

This change makes unfetch lovely to use as a polyfill from HTML:

<script src="https://unpkg.com/unfetch/polyfill"></script>
<!-- that's it! -->
<script>foo = await fetch('/foo.json')</script>

Otherwise, if you're using Unfetch and bundling your code, continue as you were before:

if (!self.fetch) self.fetch = require('unfetch');
// or simply:
import 'unfetch/polyfill';

Important - the one thing to avoid:

Since unfetch is a proper ponyfill, it will now overwrite fetch even in supported browsers if you do the following

// never do this!
window.fetch = require('unfetch');

• 8160c81 4.2.0
• f2aa730 build tweaks
• fb03f90 fix tests
• 51de947 Merge pull request #121 from 0x80/topic/export-request-init-type
• 1583aad Merge branch 'master' into topic/export-request-init-type
• aff2b9d Merge pull request #117 from Andarist/better-types
• 9f2ca62 Merge branch 'master' into better-types
• 7d00e05 Merge pull request #135 from developit/no-mjs
• 453bc11 Merge branch 'master' into no-mjs
• 21a15bf Merge pull request #138 from simon04/polyfill-ie11
• Additional commits viewable in compare view

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