micromark Character Classifier Utility

The `micromark-util-classify-character` package, currently at version 2.0.1, is a focused utility within the `micromark` ecosystem designed to classify individual Unicode character codes. It categorizes characters into three groups: whitespace, punctuation, or neither. This classification is primarily used in `micromark` extensions, particularly for determining the opening and closing behavior of 'attention' sequences such as emphasis and strong formatting, which depend on the character classes surrounding the sequence. As a part of the actively maintained `micromark` project, its release cadence is tied to the broader library. A key differentiator is its low-level, performance-optimized approach to character classification, directly supporting `micromark`'s parsing algorithms. The package is ESM-only, requiring Node.js version 16 or newer, and ships with complete TypeScript type definitions, making it suitable for modern JavaScript and TypeScript environments.