Runs tests with ts-node instead of node.

[evertonfraga]

This PR aims to both kill some technical debt from the TypeScript migration and normalize how tests are run, in preparation for the monorepo migration. This way we won't need to move dist files across CI builds.

The sentence below can still be found in our documentation, although after the TypeScript migration that wasn't possible anymore:
Tests run against source by default. They can be run with the --dist flag

@holgerd77 The API test runners are all hardcoded to require from dist/. With your OK, I can make it work just like blockchain and state tests: testing against the source by default and against dist/ using --dist.

[codecov]

Codecov Report

Merging #654 into master will not change coverage.
The diff coverage is n/a.

@@          Coverage Diff           @@
##           master    #654   +/-   ##
======================================
  Coverage    91.4%   91.4%           
======================================
  Files          31      31           
  Lines        1978    1978           
  Branches      326     326           
======================================
  Hits         1808    1808           
  Misses         90      90           
  Partials       80      80

Flag	Coverage Δ
#vm	91.4% <ø> (ø)	⬆️

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[holgerd77]

@evertonfraga Yes, running on dist/ was a left-over from the TypeScript migration process, see comment here. This can be reverted.

[evertonfraga]

Great! I will proceed with these changes. Thanks.

[holgerd77]

@evertonfraga Ah, this is likely up again for review? Procedural note: better to just place another comment on stuff like this since GitHub is just not notifying on removing labels or stuff, then this is likely to be overlooked.

Have updated the branch and will do a review and eventually merge once tests are through again.

[holgerd77]

Looks good, this PR makes also some smaller code corrections along the way. Mainly had a look through the package.json updates.

It also fixes a path bug when not using the --dist option in the blockchain test runner.

[evertonfraga]

Right, thanks!

There'll be a second step to this category of changes, which will completely remove require(../../dist) from tests. This does not seem crucial to the migration, so I put on hold for a bit.

Example: https://github.com/ethereumjs/ethereumjs-vm/search?q=require+dist&unscoped_q=require+dist

[holgerd77]

@evertonfraga ok