Regexp for BEM?

Question

Regular Expressions

There is a regular expression /\b([a-z\d-]+(?:__[a-z\d-]+)*)\b/ig
that finds blocks and elements without modifiers, but if the name is present -, then everything breaks. (example: regexr.com/3cr4d , correct behavior below)

Answer 1

https://regex101.com/r/bI6cN5/1
/\b((?:[a-z0-9-]+)(?:__[a-z0-9-]+)*)\b/ig