Karma, code coverage, cross-browser testing

[bencmbrook]

• Upgrades conflux to use Karma for testing
• Webpacks examples and testing to enable more accurate crossbrowser testing (post Babel)
• Migrates cross-browser testing to BrowserStack
• Enables code coverage
• Puts sourcecode under src
• Adds webstreams polyfill for TransformStreams in Firefox etc.

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (master@fc39ca9). Click here to learn what that means.
The diff coverage is 30.55%.

@@            Coverage Diff            @@
##             master      #47   +/-   ##
=========================================
  Coverage          ?   17.08%           
=========================================
  Files             ?        6           
  Lines             ?      357           
  Branches          ?        0           
=========================================
  Hits              ?       61           
  Misses            ?      296           
  Partials          ?        0

Impacted Files	Coverage Δ
src/crc.js	59.09% <0%> (ø)
src/index.test.js	100% <100%> (ø)
src/read.test.js	100% <100%> (ø)
src/write.test.js	100% <100%> (ø)
src/write.js	12.72% <17.64%> (ø)
src/read.js	10.32% <19.04%> (ø)

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[jimmywarting]

Hmm, you are now basically forcing the transform stream to be a polyfilled version.
and you also made this incompatible of just importing this grate zip library from just importing it in the browser.

import('https://cdn.jsdelivr.net/npm/@transcend-io/conflux@2.0.2/src/write.js')
// Uncaught (in promise) TypeError: Failed to resolve module specifier "web-streams-polyfill/ponyfill". Relative references must start with either "/", "./", or "../".

not happy with this changed, just tried to help @ibudisteanu a bit with his #64
It was not until i notice this change that i know exactly @ibudisteanu resolves from... @ibudisteanu is using native streams in his code

[bencmbrook]

Is this the same as #52?

Regarding enabling <script> imports, it seems like rollup or another bundled distribution is the right way forward.

[jimmywarting]

Is this the same as #52?

Hmm, yes

Regarding enabling <script> imports, it seems like rollup or another bundled distribution is the right way forward.

I like buildless tools... we only got one problem to make browser import possible and that is to get rid of web-streams-polyfill npm module
It just have to be available to us in some other form... StreamSaver allowed this by setting WritableStream.WritableStream = x without really forcing a dependency on web-streams-polyfill so you can bring your own version to the table

wish we could do something similar to streamsaver. Maybe we can do:

const TransformStream = globalThis.TransformStream || globalThis.WebStreamsPolyfill?.TransformStream

then npm folks can do the following if they want:

const polyfill = require('web-streams-polyfill')
globalThis.WebStreamsPolyfill = polyfill
const ZipWriter = require('conflux/write.js')