Adding typescript types and exposing ref to tableNode

[lmvco]

[codecov[bot]]

Codecov Report

Merging #373 into master will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #373   +/-   ##
=======================================
  Coverage   93.22%   93.22%           
=======================================
  Files          17       17           
  Lines         738      738           
  Branches      216      216           
=======================================
  Hits          688      688           
  Misses         41       41           
  Partials        9        9

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