Remove polyfills

[alpha0010]

Fixes #183

[erennyuksell]

is this PR tested? should i merge it into https://github.com/Frekansapp/rn-fetch-blob here?

[alpha0010]

I have only tested the parts used by our apps. So, I cannot confirm if json stream integration works as expected. Also, slicing blobs stored native side (as opposed to in js memory) might act differently; uncertain, as I do not use said feature.

[erennyuksell]

@alpha0010 What do you think about this solution? #183 (comment)

[erennyuksell]

You didn't remove this interface. Can this lines cause problems?

rn-fetch-blob/index.d.ts

Lines 26 to 35 in 979810b

	export interface Polyfill {
	Blob: PolyfillBlob;
	File: PolyfillFile;
	XMLHttpRequest: PolyfillXMLHttpRequest;
	ProgressEvent: PolyfillProgressEvent;
	Event: PolyfillEvent;
	FileReader: PolyfillFileReader;
	Fetch: PolyfillFetch;
	}

[alpha0010]

You are right; that would cause incorrect checks for typescript users.

[alpha0010]

@alpha0010 What do you think about this solution? #183 (comment)

Would result in undefined usage. The name of the native module and (recommended name for the) js module are unfortunately the same. However, index.js exports a js object with methods that do not exist on the native module, but are required by the polyfill.

[ThaJay]

Looking good! Is this not ready to use yet?

[Traviskn]

I would definitely love to remove these polyfills if possible, it seems we need more testing to confirm if anything will be broken by removing them

[sadafk831]

@alpha0010 @Frekansapp @ThaJay @Traviskn will this be the breaking changes, as most of the people using the Firebase still use the fix of global.XMLHttpRequest = RNFetchBlob.polyfill.XMLHttpRequest
So once the polyfills are removed, these will break there app

[ThaJay]

@sadafk831 Thank you for communicating the reasoning behind this.
There have been multiple solutions proposed in the relevant issue: #183 but nobody has stepped up to fix it thus far.

[alpha0010]

That might be okay: https://facebook.github.io/react-native/docs/network.html#using-other-networking-libraries