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