Accept array in Headers constructor

[tschaub]

From the spec, it looks like the Headers constructor should accept an array of arrays.

I've adapted the example for the tests:

var meta = { "Content-Type": "text/xml", "Breaking-Bad": "<3" }
new Headers(meta)

// The above is equivalent to
var meta = [
  [ "Content-Type", "text/xml" ],
  [ "Breaking-Bad", "<3" ]
]
new Headers(meta)

This came up for me as an issue using stream-http in Edge with the Financial Times polyfill. I've opened jhiesey/stream-http#71 and polyfillpolyfill/polyfill-service#1091 in case this can be addressed elsewhere, but it looks to me like this might be the right fix.

[dgraham]

The native Headers implementation in Chrome, Firefox, and Edge accepts an array in the constructor. IE 11 and Safari 10, where this polyfill is active, does not, so this is indeed a bug in the Headers polyfill.

Thanks for the detailed bug report and fix.

[mislav]

Good catch! This looks good to me. @dgraham any reason why you didn't merge yet?

[mislav]

We don't use semicolons.

[tschaub]

Thanks for pulling this in @dgraham. Any chance for an updated release with the fix?

[dgraham]

The 2.0.3 release is now available on npm.