Add generated typings for from.js file.

[octet-stream]

This pull request brings missing types for Blob backed by fs. It addresses the issue when TS asking to install missing types for fetch-blob/from.js or write corresponding declaration file:

Details

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I also added domexception into devDependencies because tests are failing without it. I think it's fine to have it here rather then install it manually every time you clone the repo and need to run through tests. It also won't be included once you run npm install fetch-blob to install the package. Please, let me know if it has to be reverted for a reason, because I don't really understand why you did that.

[codecov]

Codecov Report

Merging #80 (ead4eb3) into master (eed6a1d) will not change coverage.
The diff coverage is 100.00%.

❗ Current head ead4eb3 differs from pull request most recent head 60187f6. Consider uploading reports for the commit 60187f6 to get more accurate results

@@            Coverage Diff            @@
##            master       #80   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            2         2           
  Lines          235       232    -3     
  Branches        37        36    -1     
=========================================
- Hits           235       232    -3     

Impacted Files	Coverage Δ
from.js	100.00% <100.00%> (ø)
index.js	100.00% <0.00%> (ø)

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[octet-stream]

@jimmywarting @xxczaki can someone review this PR, please?

[jimmywarting]

I also added domexception into devDependencies

that is fine

because I don't really understand why you did that.

Some ppl don't use from so it would be unnecessary to install another dependency if they don't need it

I can fix it