fix: node ES module + worker issue on Windows

[JounQin]

close #389

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[codecov-commenter]

Codecov Report

Merging #392 (2bc2a3f) into master (0fc5001) will increase coverage by 0.01%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #392      +/-   ##
==========================================
+ Coverage   99.06%   99.07%   +0.01%     
==========================================
  Files          18       17       -1     
  Lines         214      217       +3     
  Branches       42       46       +4     
==========================================
+ Hits          212      215       +3     
  Misses          1        1              
  Partials        1        1              

Impacted Files	Coverage Δ
packages/eslint-mdx/src/index.ts	100.00% <ø> (ø)
packages/eslint-mdx/src/parser.ts	100.00% <ø> (ø)
packages/eslint-mdx/src/helpers.ts	96.42% <100.00%> (+1.19%)	⬆️

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