35 lines
1010 B
Plaintext
35 lines
1010 B
Plaintext
/**
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* @typedef {import('mdast').Link} Link
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* @typedef {import('../types.js').State} State
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*/
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import {toString} from 'mdast-util-to-string'
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/**
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* @param {Link} node
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* @param {State} state
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* @returns {boolean}
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*/
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export function formatLinkAsAutolink(node, state) {
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const raw = toString(node)
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return Boolean(
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!state.options.resourceLink &&
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// If there’s a url…
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node.url &&
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// And there’s a no title…
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!node.title &&
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// And the content of `node` is a single text node…
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node.children &&
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node.children.length === 1 &&
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node.children[0].type === 'text' &&
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// And if the url is the same as the content…
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(raw === node.url || 'mailto:' + raw === node.url) &&
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// And that starts w/ a protocol…
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/^[a-z][a-z+.-]+:/i.test(node.url) &&
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// And that doesn’t contain ASCII control codes (character escapes and
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// references don’t work), space, or angle brackets…
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!/[\0- <>\u007F]/.test(node.url)
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)
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}
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