Switch ts-node to tsm

[karlhorky]

Hey @lukeed 👋

tsm is awesome! And seems to be working well with ley. So a quick PR to update this

Closes #22

[codecov-commenter]

Codecov Report

Merging #23 (8b17018) into master (3c290b7) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master      #23   +/-   ##
=======================================
  Coverage   50.00%   50.00%           
=======================================
  Files           2        2           
  Lines         206      206           
=======================================
  Hits          103      103           
  Misses        103      103           

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[lukeed]

Hey, thanks :) And thanks for PR

[karlhorky]

Glad to help 🙌