@MikhailArkhipov
Please could you add some unit tests for this.
We have tests for these indentation rules today in src/test/format/extension.onTypeFormat.test.ts

Actually, I can't find a way to simulate Enter (or typing). It is not equivalent to calling onTypeFormattingProvider, OnEnterRule is executed inside the editor. document.edit does not cause VSC to invoke rules. It seems that keyboard typing does not expose hooks and does not map to commands like in big VS.

Codecov Report

Merging #562 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #562   +/-   ##
=======================================
  Coverage   56.29%   56.29%           
=======================================
  Files         212      212           
  Lines        9975     9975           
  Branches     1754     1754           
=======================================
  Hits         5615     5615           
  Misses       4355     4355           
  Partials        5        5

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