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28 lines
948 B
Text
28 lines
948 B
Text
/**
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* @typedef {import('mdast').Association} Association
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*/
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import {decodeString} from 'micromark-util-decode-string'
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/**
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* The `label` of an association is the string value: character escapes and
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* references work, and casing is intact.
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* The `identifier` is used to match one association to another: controversially,
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* character escapes and references don’t work in this matching: `©` does
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* not match `©`, and `\+` does not match `+`.
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* But casing is ignored (and whitespace) is trimmed and collapsed: ` A\nb`
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* matches `a b`.
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* So, we do prefer the label when figuring out how we’re going to serialize:
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* it has whitespace, casing, and we can ignore most useless character escapes
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* and all character references.
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*
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* @param {Association} node
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* @returns {string}
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*/
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export function association(node) {
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if (node.label || !node.identifier) {
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return node.label || ''
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}
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return decodeString(node.identifier)
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}
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