Stabilize semantic version validator
Medium Regex arena: groups, alternation, pre-release labels, and anchors
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Missing prerequisites: regex-easy-semantic-version
A package publisher rejects invalid release tags before CI starts. You are working inside a text-processing challenge room, and the arena only clears when the result is safe, deterministic, and explainable.
Learn to apply groups, alternation, pre-release labels, and anchors in a text-processing challenge room while explaining the invariant, safety constraints, and hidden edge cases.
- Demonstrates groups, alternation, pre-release labels, and anchors
- Handles the visible sample and hidden edge cases
- Keeps output deterministic and explainable
- Avoids unsafe dynamic execution
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