Feat reduce ast node count

[codecov-commenter]

Codecov Report

Attention: 3 lines in your changes are missing coverage. Please review.

Comparison is base (0b1b0f8) 93.41% compared to head (e3eed19) 93.63%. Report is 1 commits behind head on main.

Files	Patch %	Lines
src/ast/declaration/function-definition.ts	50.00%	2 Missing :warning:
src/ast/expression/unary-operation.ts	0.00%	1 Missing :warning:

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Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #4 +/- ## ========================================== + Coverage 93.41% 93.63% +0.21% ========================================== Files 108 107 -1 Lines 1398 1383 -15 Branches 148 152 +4 ========================================== - Hits 1306 1295 -11 + Misses 92 88 -4 ```

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