[backport 2.8] Replace re2 with RegExp in timeline and add unit tests#4208

Merged

joshuarrrr merged 1 commit intoopensearch-project:2.8from ananzh:2.8-re2

Jun 8, 2023

+126-138

Commits on Jun 1, 2023

[2.8 backport] Replace re2 with RegExp in timeline and add unit tests
ananzh
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