Library TypeScript Transition

[holgerd77]

TypeScript transition based on the initial work on the RLP library ethereumjs/rlp#37.

[holgerd77]

@s1na @krzkaczor Hmm, I have now npm run test passing locally with formatting and linting, but build is failing for Prettier with all files differ, not sure how to proceed/debug. Did you experience something similar respectively have an idea?

[krzkaczor]

@holgerd77 is there a possibility that you run an old version of common prettier config package? Maybe rm -rf node_modules and reinstall :D

I am not sure if you can SSH to travis CI but this would also be a good idea (you def can do this on circeci).

[holgerd77]

@krzkaczor Hmm, have also done (reinstall node modules).

[s1na]

@holgerd77 I had also faced this, but wasn't sure what's the cause. Just tried it in your branch and the same happens for me. Interestingly if you run npx prettier --list-different **/*.{ts,json,md} it does catch the errors!
Changing "format" command in package.json to "prettier --list-different '**/*.{ts,json,md}'" seems to solve it (note the ' ' around the glob).

[coveralls]

Coverage decreased (-0.04%) to 95.902% when pulling f3e235f on typescript into bc2fa6f on master.

[holgerd77]

@s1na Works! ✨

Thanks! 😄

[s1na]

Looks good! There were just a few minor comments.

Another point: on Common class, return type annotations for the methods before hardforkBlock have probably been forgotten 😄

[holgerd77]

Have updated the missing return values.

[holgerd77]

@s1na Hi Sina, just pushed, can you have another look and approve if you are satisfied with everything?