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/**
* @typedef {import('micromark-util-types').Code} Code
*/
import {
markdownLineEndingOrSpace,
unicodePunctuation,
unicodeWhitespace
} from 'micromark-util-character'
/**
* Classify whether a code represents whitespace, punctuation, or something
* else.
*
* Used for attention (emphasis, strong), whose sequences can open or close
* based on the class of surrounding characters.
*
* > 👉 **Note**: eof (`null`) is seen as whitespace.
*
* @param {Code} code
* Code.
* @returns {typeof constants.characterGroupWhitespace | typeof constants.characterGroupPunctuation | undefined}
* Group.
*/
export function classifyCharacter(code) {
if (
code === null ||
markdownLineEndingOrSpace(code) ||
unicodeWhitespace(code)
) {
return 1
}
if (unicodePunctuation(code)) {
return 2
}
}
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