`.\n /** @type {Element} */\n let result = {\n type: 'element',\n tagName: 'code',\n properties,\n children: [{type: 'text', value}]\n }\n\n if (node.meta) {\n result.data = {meta: node.meta}\n }\n\n state.patch(node, result)\n result = state.applyData(node, result)\n\n // Create ``.\n result = {type: 'element', tagName: 'pre', properties: {}, children: [result]}\n state.patch(node, result)\n return result\n}\n","/**\n * @typedef {import('hast').Element} Element\n * @typedef {import('mdast').Delete} Delete\n * @typedef {import('../state.js').State} State\n */\n\n// Make VS Code show references to the above types.\n''\n\n/**\n * Turn an mdast `delete` node into hast.\n *\n * @param {State} state\n * Info passed around.\n * @param {Delete} node\n * mdast node.\n * @returns {Element}\n * hast node.\n */\nexport function strikethrough(state, node) {\n /** @type {Element} */\n const result = {\n type: 'element',\n tagName: 'del',\n properties: {},\n children: state.all(node)\n }\n state.patch(node, result)\n return state.applyData(node, result)\n}\n","/**\n * @typedef {import('hast').Element} Element\n * @typedef {import('mdast').Emphasis} Emphasis\n * @typedef {import('../state.js').State} State\n */\n\n// Make VS Code show references to the above types.\n''\n\n/**\n * Turn an mdast `emphasis` node into hast.\n *\n * @param {State} state\n * Info passed around.\n * @param {Emphasis} node\n * mdast node.\n * @returns {Element}\n * hast node.\n */\nexport function emphasis(state, node) {\n /** @type {Element} */\n const result = {\n type: 'element',\n tagName: 'em',\n properties: {},\n children: state.all(node)\n }\n state.patch(node, result)\n return state.applyData(node, result)\n}\n","/**\n * @typedef {import('hast').Element} Element\n * @typedef {import('mdast').FootnoteReference} FootnoteReference\n * @typedef {import('../state.js').State} State\n */\n\nimport {normalizeUri} from 'micromark-util-sanitize-uri'\n\n/**\n * Turn an mdast `footnoteReference` node into hast.\n *\n * @param {State} state\n * Info passed around.\n * @param {FootnoteReference} node\n * mdast node.\n * @returns {Element}\n * hast node.\n */\nexport function footnoteReference(state, node) {\n const clobberPrefix =\n typeof state.options.clobberPrefix === 'string'\n ? state.options.clobberPrefix\n : 'user-content-'\n const id = String(node.identifier).toUpperCase()\n const safeId = normalizeUri(id.toLowerCase())\n const index = state.footnoteOrder.indexOf(id)\n /** @type {number} */\n let counter\n\n let reuseCounter = state.footnoteCounts.get(id)\n\n if (reuseCounter === undefined) {\n reuseCounter = 0\n state.footnoteOrder.push(id)\n counter = state.footnoteOrder.length\n } else {\n counter = index + 1\n }\n\n reuseCounter += 1\n state.footnoteCounts.set(id, reuseCounter)\n\n /** @type {Element} */\n const link = {\n type: 'element',\n tagName: 'a',\n properties: {\n href: '#' + clobberPrefix + 'fn-' + safeId,\n id:\n clobberPrefix +\n 'fnref-' +\n safeId +\n (reuseCounter > 1 ? '-' + reuseCounter : ''),\n dataFootnoteRef: true,\n ariaDescribedBy: ['footnote-label']\n },\n children: [{type: 'text', value: String(counter)}]\n }\n state.patch(node, link)\n\n /** @type {Element} */\n const sup = {\n type: 'element',\n tagName: 'sup',\n properties: {},\n children: [link]\n }\n state.patch(node, sup)\n return state.applyData(node, sup)\n}\n","/**\n * @typedef {import('hast').Element} Element\n * @typedef {import('mdast').Heading} Heading\n * @typedef {import('../state.js').State} State\n */\n\n// Make VS Code show references to the above types.\n''\n\n/**\n * Turn an mdast `heading` node into hast.\n *\n * @param {State} state\n * Info passed around.\n * @param {Heading} node\n * mdast node.\n * @returns {Element}\n * hast node.\n */\nexport function heading(state, node) {\n /** @type {Element} */\n const result = {\n type: 'element',\n tagName: 'h' + node.depth,\n properties: {},\n children: state.all(node)\n }\n state.patch(node, result)\n return state.applyData(node, result)\n}\n","/**\n * @typedef {import('hast').Element} Element\n * @typedef {import('mdast').Html} Html\n * @typedef {import('../state.js').State} State\n * @typedef {import('../../index.js').Raw} Raw\n */\n\n// Make VS Code show references to the above types.\n''\n\n/**\n * Turn an mdast `html` node into hast (`raw` node in dangerous mode, otherwise\n * nothing).\n *\n * @param {State} state\n * Info passed around.\n * @param {Html} node\n * mdast node.\n * @returns {Element | Raw | undefined}\n * hast node.\n */\nexport function html(state, node) {\n if (state.options.allowDangerousHtml) {\n /** @type {Raw} */\n const result = {type: 'raw', value: node.value}\n state.patch(node, result)\n return state.applyData(node, result)\n }\n\n return undefined\n}\n","/**\n * @typedef {import('hast').Element} Element\n * @typedef {import('hast').ElementContent} ElementContent\n * @typedef {import('hast').Properties} Properties\n * @typedef {import('mdast').ImageReference} ImageReference\n * @typedef {import('../state.js').State} State\n */\n\nimport {normalizeUri} from 'micromark-util-sanitize-uri'\nimport {revert} from '../revert.js'\n\n/**\n * Turn an mdast `imageReference` node into hast.\n *\n * @param {State} state\n * Info passed around.\n * @param {ImageReference} node\n * mdast node.\n * @returns {Array | ElementContent}\n * hast node.\n */\nexport function imageReference(state, node) {\n const id = String(node.identifier).toUpperCase()\n const definition = state.definitionById.get(id)\n\n if (!definition) {\n return revert(state, node)\n }\n\n /** @type {Properties} */\n const properties = {src: normalizeUri(definition.url || ''), alt: node.alt}\n\n if (definition.title !== null && definition.title !== undefined) {\n properties.title = definition.title\n }\n\n /** @type {Element} */\n const result = {type: 'element', tagName: 'img', properties, children: []}\n state.patch(node, result)\n return state.applyData(node, result)\n}\n","/**\n * @typedef {import('hast').Element} Element\n * @typedef {import('hast').Properties} Properties\n * @typedef {import('mdast').Image} Image\n * @typedef {import('../state.js').State} State\n */\n\nimport {normalizeUri} from 'micromark-util-sanitize-uri'\n\n/**\n * Turn an mdast `image` node into hast.\n *\n * @param {State} state\n * Info passed around.\n * @param {Image} node\n * mdast node.\n * @returns {Element}\n * hast node.\n */\nexport function image(state, node) {\n /** @type {Properties} */\n const properties = {src: normalizeUri(node.url)}\n\n if (node.alt !== null && node.alt !== undefined) {\n properties.alt = node.alt\n }\n\n if (node.title !== null && node.title !== undefined) {\n properties.title = node.title\n }\n\n /** @type {Element} */\n const result = {type: 'element', tagName: 'img', properties, children: []}\n state.patch(node, result)\n return state.applyData(node, result)\n}\n","/**\n * @typedef {import('hast').Element} Element\n * @typedef {import('hast').Text} Text\n * @typedef {import('mdast').InlineCode} InlineCode\n * @typedef {import('../state.js').State} State\n */\n\n// Make VS Code show references to the above types.\n''\n\n/**\n * Turn an mdast `inlineCode` node into hast.\n *\n * @param {State} state\n * Info passed around.\n * @param {InlineCode} node\n * mdast node.\n * @returns {Element}\n * hast node.\n */\nexport function inlineCode(state, node) {\n /** @type {Text} */\n const text = {type: 'text', value: node.value.replace(/\\r?\\n|\\r/g, ' ')}\n state.patch(node, text)\n\n /** @type {Element} */\n const result = {\n type: 'element',\n tagName: 'code',\n properties: {},\n children: [text]\n }\n state.patch(node, result)\n return state.applyData(node, result)\n}\n","/**\n * @typedef {import('hast').Element} Element\n * @typedef {import('hast').ElementContent} ElementContent\n * @typedef {import('hast').Properties} Properties\n * @typedef {import('mdast').LinkReference} LinkReference\n * @typedef {import('../state.js').State} State\n */\n\nimport {normalizeUri} from 'micromark-util-sanitize-uri'\nimport {revert} from '../revert.js'\n\n/**\n * Turn an mdast `linkReference` node into hast.\n *\n * @param {State} state\n * Info passed around.\n * @param {LinkReference} node\n * mdast node.\n * @returns {Array | ElementContent}\n * hast node.\n */\nexport function linkReference(state, node) {\n const id = String(node.identifier).toUpperCase()\n const definition = state.definitionById.get(id)\n\n if (!definition) {\n return revert(state, node)\n }\n\n /** @type {Properties} */\n const properties = {href: normalizeUri(definition.url || '')}\n\n if (definition.title !== null && definition.title !== undefined) {\n properties.title = definition.title\n }\n\n /** @type {Element} */\n const result = {\n type: 'element',\n tagName: 'a',\n properties,\n children: state.all(node)\n }\n state.patch(node, result)\n return state.applyData(node, result)\n}\n","/**\n * @typedef {import('hast').Element} Element\n * @typedef {import('hast').Properties} Properties\n * @typedef {import('mdast').Link} Link\n * @typedef {import('../state.js').State} State\n */\n\nimport {normalizeUri} from 'micromark-util-sanitize-uri'\n\n/**\n * Turn an mdast `link` node into hast.\n *\n * @param {State} state\n * Info passed around.\n * @param {Link} node\n * mdast node.\n * @returns {Element}\n * hast node.\n */\nexport function link(state, node) {\n /** @type {Properties} */\n const properties = {href: normalizeUri(node.url)}\n\n if (node.title !== null && node.title !== undefined) {\n properties.title = node.title\n }\n\n /** @type {Element} */\n const result = {\n type: 'element',\n tagName: 'a',\n properties,\n children: state.all(node)\n }\n state.patch(node, result)\n return state.applyData(node, result)\n}\n","/**\n * @typedef {import('hast').Element} Element\n * @typedef {import('hast').Properties} Properties\n * @typedef {import('mdast').List} List\n * @typedef {import('../state.js').State} State\n */\n\n// Make VS Code show references to the above types.\n''\n\n/**\n * Turn an mdast `list` node into hast.\n *\n * @param {State} state\n * Info passed around.\n * @param {List} node\n * mdast node.\n * @returns {Element}\n * hast node.\n */\nexport function list(state, node) {\n /** @type {Properties} */\n const properties = {}\n const results = state.all(node)\n let index = -1\n\n if (typeof node.start === 'number' && node.start !== 1) {\n properties.start = node.start\n }\n\n // Like GitHub, add a class for custom styling.\n while (++index < results.length) {\n const child = results[index]\n\n if (\n child.type === 'element' &&\n child.tagName === 'li' &&\n child.properties &&\n Array.isArray(child.properties.className) &&\n child.properties.className.includes('task-list-item')\n ) {\n properties.className = ['contains-task-list']\n break\n }\n }\n\n /** @type {Element} */\n const result = {\n type: 'element',\n tagName: node.ordered ? 'ol' : 'ul',\n properties,\n children: state.wrap(results, true)\n }\n state.patch(node, result)\n return state.applyData(node, result)\n}\n","/**\n * @typedef {import('hast').Element} Element\n * @typedef {import('mdast').Paragraph} Paragraph\n * @typedef {import('../state.js').State} State\n */\n\n// Make VS Code show references to the above types.\n''\n\n/**\n * Turn an mdast `paragraph` node into hast.\n *\n * @param {State} state\n * Info passed around.\n * @param {Paragraph} node\n * mdast node.\n * @returns {Element}\n * hast node.\n */\nexport function paragraph(state, node) {\n /** @type {Element} */\n const result = {\n type: 'element',\n tagName: 'p',\n properties: {},\n children: state.all(node)\n }\n state.patch(node, result)\n return state.applyData(node, result)\n}\n","/**\n * @typedef {import('hast').Parents} HastParents\n * @typedef {import('hast').Root} HastRoot\n * @typedef {import('mdast').Root} MdastRoot\n * @typedef {import('../state.js').State} State\n */\n\n// Make VS Code show references to the above types.\n''\n\n/**\n * Turn an mdast `root` node into hast.\n *\n * @param {State} state\n * Info passed around.\n * @param {MdastRoot} node\n * mdast node.\n * @returns {HastParents}\n * hast node.\n */\nexport function root(state, node) {\n /** @type {HastRoot} */\n const result = {type: 'root', children: state.wrap(state.all(node))}\n state.patch(node, result)\n return state.applyData(node, result)\n}\n","/**\n * @typedef {import('hast').Element} Element\n * @typedef {import('mdast').Strong} Strong\n * @typedef {import('../state.js').State} State\n */\n\n// Make VS Code show references to the above types.\n''\n\n/**\n * Turn an mdast `strong` node into hast.\n *\n * @param {State} state\n * Info passed around.\n * @param {Strong} node\n * mdast node.\n * @returns {Element}\n * hast node.\n */\nexport function strong(state, node) {\n /** @type {Element} */\n const result = {\n type: 'element',\n tagName: 'strong',\n properties: {},\n children: state.all(node)\n }\n state.patch(node, result)\n return state.applyData(node, result)\n}\n","/**\n * @typedef {import('hast').Element} Element\n * @typedef {import('mdast').Table} Table\n * @typedef {import('../state.js').State} State\n */\n\nimport {pointEnd, pointStart} from 'unist-util-position'\n\n/**\n * Turn an mdast `table` node into hast.\n *\n * @param {State} state\n * Info passed around.\n * @param {Table} node\n * mdast node.\n * @returns {Element}\n * hast node.\n */\nexport function table(state, node) {\n const rows = state.all(node)\n const firstRow = rows.shift()\n /** @type {Array} */\n const tableContent = []\n\n if (firstRow) {\n /** @type {Element} */\n const head = {\n type: 'element',\n tagName: 'thead',\n properties: {},\n children: state.wrap([firstRow], true)\n }\n state.patch(node.children[0], head)\n tableContent.push(head)\n }\n\n if (rows.length > 0) {\n /** @type {Element} */\n const body = {\n type: 'element',\n tagName: 'tbody',\n properties: {},\n children: state.wrap(rows, true)\n }\n\n const start = pointStart(node.children[1])\n const end = pointEnd(node.children[node.children.length - 1])\n if (start && end) body.position = {start, end}\n tableContent.push(body)\n }\n\n /** @type {Element} */\n const result = {\n type: 'element',\n tagName: 'table',\n properties: {},\n children: state.wrap(tableContent, true)\n }\n state.patch(node, result)\n return state.applyData(node, result)\n}\n","/**\n * @typedef {import('hast').Element} Element\n * @typedef {import('mdast').TableCell} TableCell\n * @typedef {import('../state.js').State} State\n */\n\n// Make VS Code show references to the above types.\n''\n\n/**\n * Turn an mdast `tableCell` node into hast.\n *\n * @param {State} state\n * Info passed around.\n * @param {TableCell} node\n * mdast node.\n * @returns {Element}\n * hast node.\n */\nexport function tableCell(state, node) {\n // Note: this function is normally not called: see `table-row` for how rows\n // and their cells are compiled.\n /** @type {Element} */\n const result = {\n type: 'element',\n tagName: 'td', // Assume body cell.\n properties: {},\n children: state.all(node)\n }\n state.patch(node, result)\n return state.applyData(node, result)\n}\n","/**\n * @typedef {import('hast').Element} Element\n * @typedef {import('hast').ElementContent} ElementContent\n * @typedef {import('hast').Properties} Properties\n * @typedef {import('mdast').Parents} Parents\n * @typedef {import('mdast').TableRow} TableRow\n * @typedef {import('../state.js').State} State\n */\n\n// Make VS Code show references to the above types.\n''\n\n/**\n * Turn an mdast `tableRow` node into hast.\n *\n * @param {State} state\n * Info passed around.\n * @param {TableRow} node\n * mdast node.\n * @param {Parents | undefined} parent\n * Parent of `node`.\n * @returns {Element}\n * hast node.\n */\nexport function tableRow(state, node, parent) {\n const siblings = parent ? parent.children : undefined\n // Generate a body row when without parent.\n const rowIndex = siblings ? siblings.indexOf(node) : 1\n const tagName = rowIndex === 0 ? 'th' : 'td'\n // To do: option to use `style`?\n const align = parent && parent.type === 'table' ? parent.align : undefined\n const length = align ? align.length : node.children.length\n let cellIndex = -1\n /** @type {Array} */\n const cells = []\n\n while (++cellIndex < length) {\n // Note: can also be undefined.\n const cell = node.children[cellIndex]\n /** @type {Properties} */\n const properties = {}\n const alignValue = align ? align[cellIndex] : undefined\n\n if (alignValue) {\n properties.align = alignValue\n }\n\n /** @type {Element} */\n let result = {type: 'element', tagName, properties, children: []}\n\n if (cell) {\n result.children = state.all(cell)\n state.patch(cell, result)\n result = state.applyData(cell, result)\n }\n\n cells.push(result)\n }\n\n /** @type {Element} */\n const result = {\n type: 'element',\n tagName: 'tr',\n properties: {},\n children: state.wrap(cells, true)\n }\n state.patch(node, result)\n return state.applyData(node, result)\n}\n","/**\n * @typedef {import('hast').Element} HastElement\n * @typedef {import('hast').Text} HastText\n * @typedef {import('mdast').Text} MdastText\n * @typedef {import('../state.js').State} State\n */\n\nimport {trimLines} from 'trim-lines'\n\n/**\n * Turn an mdast `text` node into hast.\n *\n * @param {State} state\n * Info passed around.\n * @param {MdastText} node\n * mdast node.\n * @returns {HastElement | HastText}\n * hast node.\n */\nexport function text(state, node) {\n /** @type {HastText} */\n const result = {type: 'text', value: trimLines(String(node.value))}\n state.patch(node, result)\n return state.applyData(node, result)\n}\n","/**\n * @typedef {import('hast').Element} Element\n * @typedef {import('mdast').ThematicBreak} ThematicBreak\n * @typedef {import('../state.js').State} State\n */\n\n// Make VS Code show references to the above types.\n''\n\n/**\n * Turn an mdast `thematicBreak` node into hast.\n *\n * @param {State} state\n * Info passed around.\n * @param {ThematicBreak} node\n * mdast node.\n * @returns {Element}\n * hast node.\n */\nexport function thematicBreak(state, node) {\n /** @type {Element} */\n const result = {\n type: 'element',\n tagName: 'hr',\n properties: {},\n children: []\n }\n state.patch(node, result)\n return state.applyData(node, result)\n}\n","/**\n * @typedef {import('hast').Element} HastElement\n * @typedef {import('hast').ElementContent} HastElementContent\n * @typedef {import('hast').Nodes} HastNodes\n * @typedef {import('hast').Properties} HastProperties\n * @typedef {import('hast').RootContent} HastRootContent\n * @typedef {import('hast').Text} HastText\n *\n * @typedef {import('mdast').Definition} MdastDefinition\n * @typedef {import('mdast').FootnoteDefinition} MdastFootnoteDefinition\n * @typedef {import('mdast').Nodes} MdastNodes\n * @typedef {import('mdast').Parents} MdastParents\n *\n * @typedef {import('vfile').VFile} VFile\n *\n * @typedef {import('./footer.js').FootnoteBackContentTemplate} FootnoteBackContentTemplate\n * @typedef {import('./footer.js').FootnoteBackLabelTemplate} FootnoteBackLabelTemplate\n */\n\n/**\n * @callback Handler\n * Handle a node.\n * @param {State} state\n * Info passed around.\n * @param {any} node\n * mdast node to handle.\n * @param {MdastParents | undefined} parent\n * Parent of `node`.\n * @returns {Array | HastElementContent | undefined}\n * hast node.\n *\n * @typedef {Partial>} Handlers\n * Handle nodes.\n *\n * @typedef Options\n * Configuration (optional).\n * @property {boolean | null | undefined} [allowDangerousHtml=false]\n * Whether to persist raw HTML in markdown in the hast tree (default:\n * `false`).\n * @property {string | null | undefined} [clobberPrefix='user-content-']\n * Prefix to use before the `id` property on footnotes to prevent them from\n * *clobbering* (default: `'user-content-'`).\n *\n * Pass `''` for trusted markdown and when you are careful with\n * polyfilling.\n * You could pass a different prefix.\n *\n * DOM clobbering is this:\n *\n * ```html\n * \n * \n * ```\n *\n * The above example shows that elements are made available by browsers, by\n * their ID, on the `window` object.\n * This is a security risk because you might be expecting some other variable\n * at that place.\n * It can also break polyfills.\n * Using a prefix solves these problems.\n * @property {VFile | null | undefined} [file]\n * Corresponding virtual file representing the input document (optional).\n * @property {FootnoteBackContentTemplate | string | null | undefined} [footnoteBackContent]\n * Content of the backreference back to references (default: `defaultFootnoteBackContent`).\n *\n * The default value is:\n *\n * ```js\n * function defaultFootnoteBackContent(_, rereferenceIndex) {\n * const result = [{type: 'text', value: '↩'}]\n *\n * if (rereferenceIndex > 1) {\n * result.push({\n * type: 'element',\n * tagName: 'sup',\n * properties: {},\n * children: [{type: 'text', value: String(rereferenceIndex)}]\n * })\n * }\n *\n * return result\n * }\n * ```\n *\n * This content is used in the `a` element of each backreference (the `↩`\n * links).\n * @property {FootnoteBackLabelTemplate | string | null | undefined} [footnoteBackLabel]\n * Label to describe the backreference back to references (default:\n * `defaultFootnoteBackLabel`).\n *\n * The default value is:\n *\n * ```js\n * function defaultFootnoteBackLabel(referenceIndex, rereferenceIndex) {\n * return (\n * 'Back to reference ' +\n * (referenceIndex + 1) +\n * (rereferenceIndex > 1 ? '-' + rereferenceIndex : '')\n * )\n * }\n * ```\n *\n * Change it when the markdown is not in English.\n *\n * This label is used in the `ariaLabel` property on each backreference\n * (the `↩` links).\n * It affects users of assistive technology.\n * @property {string | null | undefined} [footnoteLabel='Footnotes']\n * Textual label to use for the footnotes section (default: `'Footnotes'`).\n *\n * Change it when the markdown is not in English.\n *\n * This label is typically hidden visually (assuming a `sr-only` CSS class\n * is defined that does that) and so affects screen readers only.\n * If you do have such a class, but want to show this section to everyone,\n * pass different properties with the `footnoteLabelProperties` option.\n * @property {HastProperties | null | undefined} [footnoteLabelProperties={className: ['sr-only']}]\n * Properties to use on the footnote label (default: `{className:\n * ['sr-only']}`).\n *\n * Change it to show the label and add other properties.\n *\n * This label is typically hidden visually (assuming an `sr-only` CSS class\n * is defined that does that) and so affects screen readers only.\n * If you do have such a class, but want to show this section to everyone,\n * pass an empty string.\n * You can also add different properties.\n *\n * > **Note**: `id: 'footnote-label'` is always added, because footnote\n * > calls use it with `aria-describedby` to provide an accessible label.\n * @property {string | null | undefined} [footnoteLabelTagName='h2']\n * HTML tag name to use for the footnote label element (default: `'h2'`).\n *\n * Change it to match your document structure.\n *\n * This label is typically hidden visually (assuming a `sr-only` CSS class\n * is defined that does that) and so affects screen readers only.\n * If you do have such a class, but want to show this section to everyone,\n * pass different properties with the `footnoteLabelProperties` option.\n * @property {Handlers | null | undefined} [handlers]\n * Extra handlers for nodes (optional).\n * @property {Array | null | undefined} [passThrough]\n * List of custom mdast node types to pass through (keep) in hast (note that\n * the node itself is passed, but eventual children are transformed)\n * (optional).\n * @property {Handler | null | undefined} [unknownHandler]\n * Handler for all unknown nodes (optional).\n *\n * @typedef State\n * Info passed around.\n * @property {(node: MdastNodes) => Array} all\n * Transform the children of an mdast parent to hast.\n * @property {(from: MdastNodes, to: Type) => HastElement | Type} applyData\n * Honor the `data` of `from`, and generate an element instead of `node`.\n * @property {Map} definitionById\n * Definitions by their identifier.\n * @property {Map} footnoteById\n * Footnote definitions by their identifier.\n * @property {Map} footnoteCounts\n * Counts for how often the same footnote was called.\n * @property {Array} footnoteOrder\n * Identifiers of order when footnote calls first appear in tree order.\n * @property {Handlers} handlers\n * Applied handlers.\n * @property {(node: MdastNodes, parent: MdastParents | undefined) => Array | HastElementContent | undefined} one\n * Transform an mdast node to hast.\n * @property {Options} options\n * Configuration.\n * @property {(from: MdastNodes, node: HastNodes) => undefined} patch\n * Copy a node’s positional info.\n * @property {(nodes: Array, loose?: boolean | undefined) => Array} wrap\n * Wrap `nodes` with line endings between each node, adds initial/final line endings when `loose`.\n */\n\nimport structuredClone from '@ungap/structured-clone'\nimport {visit} from 'unist-util-visit'\nimport {position} from 'unist-util-position'\nimport {handlers as defaultHandlers} from './handlers/index.js'\n\nconst own = {}.hasOwnProperty\n\n/** @type {Options} */\nconst emptyOptions = {}\n\n/**\n * Create `state` from an mdast tree.\n *\n * @param {MdastNodes} tree\n * mdast node to transform.\n * @param {Options | null | undefined} [options]\n * Configuration (optional).\n * @returns {State}\n * `state` function.\n */\nexport function createState(tree, options) {\n const settings = options || emptyOptions\n /** @type {Map} */\n const definitionById = new Map()\n /** @type {Map} */\n const footnoteById = new Map()\n /** @type {Map} */\n const footnoteCounts = new Map()\n /** @type {Handlers} */\n // @ts-expect-error: the root handler returns a root.\n // Hard to type.\n const handlers = {...defaultHandlers, ...settings.handlers}\n\n /** @type {State} */\n const state = {\n all,\n applyData,\n definitionById,\n footnoteById,\n footnoteCounts,\n footnoteOrder: [],\n handlers,\n one,\n options: settings,\n patch,\n wrap\n }\n\n visit(tree, function (node) {\n if (node.type === 'definition' || node.type === 'footnoteDefinition') {\n const map = node.type === 'definition' ? definitionById : footnoteById\n const id = String(node.identifier).toUpperCase()\n\n // Mimick CM behavior of link definitions.\n // See: .\n if (!map.has(id)) {\n // @ts-expect-error: node type matches map.\n map.set(id, node)\n }\n }\n })\n\n return state\n\n /**\n * Transform an mdast node into a hast node.\n *\n * @param {MdastNodes} node\n * mdast node.\n * @param {MdastParents | undefined} [parent]\n * Parent of `node`.\n * @returns {Array | HastElementContent | undefined}\n * Resulting hast node.\n */\n function one(node, parent) {\n const type = node.type\n const handle = state.handlers[type]\n\n if (own.call(state.handlers, type) && handle) {\n return handle(state, node, parent)\n }\n\n if (state.options.passThrough && state.options.passThrough.includes(type)) {\n if ('children' in node) {\n const {children, ...shallow} = node\n const result = structuredClone(shallow)\n // @ts-expect-error: TS doesn’t understand…\n result.children = state.all(node)\n // @ts-expect-error: TS doesn’t understand…\n return result\n }\n\n // @ts-expect-error: it’s custom.\n return structuredClone(node)\n }\n\n const unknown = state.options.unknownHandler || defaultUnknownHandler\n\n return unknown(state, node, parent)\n }\n\n /**\n * Transform the children of an mdast node into hast nodes.\n *\n * @param {MdastNodes} parent\n * mdast node to compile\n * @returns {Array}\n * Resulting hast nodes.\n */\n function all(parent) {\n /** @type {Array} */\n const values = []\n\n if ('children' in parent) {\n const nodes = parent.children\n let index = -1\n while (++index < nodes.length) {\n const result = state.one(nodes[index], parent)\n\n // To do: see if we van clean this? Can we merge texts?\n if (result) {\n if (index && nodes[index - 1].type === 'break') {\n if (!Array.isArray(result) && result.type === 'text') {\n result.value = trimMarkdownSpaceStart(result.value)\n }\n\n if (!Array.isArray(result) && result.type === 'element') {\n const head = result.children[0]\n\n if (head && head.type === 'text') {\n head.value = trimMarkdownSpaceStart(head.value)\n }\n }\n }\n\n if (Array.isArray(result)) {\n values.push(...result)\n } else {\n values.push(result)\n }\n }\n }\n }\n\n return values\n }\n}\n\n/**\n * Copy a node’s positional info.\n *\n * @param {MdastNodes} from\n * mdast node to copy from.\n * @param {HastNodes} to\n * hast node to copy into.\n * @returns {undefined}\n * Nothing.\n */\nfunction patch(from, to) {\n if (from.position) to.position = position(from)\n}\n\n/**\n * Honor the `data` of `from` and maybe generate an element instead of `to`.\n *\n * @template {HastNodes} Type\n * Node type.\n * @param {MdastNodes} from\n * mdast node to use data from.\n * @param {Type} to\n * hast node to change.\n * @returns {HastElement | Type}\n * Nothing.\n */\nfunction applyData(from, to) {\n /** @type {HastElement | Type} */\n let result = to\n\n // Handle `data.hName`, `data.hProperties, `data.hChildren`.\n if (from && from.data) {\n const hName = from.data.hName\n const hChildren = from.data.hChildren\n const hProperties = from.data.hProperties\n\n if (typeof hName === 'string') {\n // Transforming the node resulted in an element with a different name\n // than wanted:\n if (result.type === 'element') {\n result.tagName = hName\n }\n // Transforming the node resulted in a non-element, which happens for\n // raw, text, and root nodes (unless custom handlers are passed).\n // The intent of `hName` is to create an element, but likely also to keep\n // the content around (otherwise: pass `hChildren`).\n else {\n /** @type {Array} */\n // @ts-expect-error: assume no doctypes in `root`.\n const children = 'children' in result ? result.children : [result]\n result = {type: 'element', tagName: hName, properties: {}, children}\n }\n }\n\n if (result.type === 'element' && hProperties) {\n Object.assign(result.properties, structuredClone(hProperties))\n }\n\n if (\n 'children' in result &&\n result.children &&\n hChildren !== null &&\n hChildren !== undefined\n ) {\n result.children = hChildren\n }\n }\n\n return result\n}\n\n/**\n * Transform an unknown node.\n *\n * @param {State} state\n * Info passed around.\n * @param {MdastNodes} node\n * Unknown mdast node.\n * @returns {HastElement | HastText}\n * Resulting hast node.\n */\nfunction defaultUnknownHandler(state, node) {\n const data = node.data || {}\n /** @type {HastElement | HastText} */\n const result =\n 'value' in node &&\n !(own.call(data, 'hProperties') || own.call(data, 'hChildren'))\n ? {type: 'text', value: node.value}\n : {\n type: 'element',\n tagName: 'div',\n properties: {},\n children: state.all(node)\n }\n\n state.patch(node, result)\n return state.applyData(node, result)\n}\n\n/**\n * Wrap `nodes` with line endings between each node.\n *\n * @template {HastRootContent} Type\n * Node type.\n * @param {Array} nodes\n * List of nodes to wrap.\n * @param {boolean | undefined} [loose=false]\n * Whether to add line endings at start and end (default: `false`).\n * @returns {Array}\n * Wrapped nodes.\n */\nexport function wrap(nodes, loose) {\n /** @type {Array} */\n const result = []\n let index = -1\n\n if (loose) {\n result.push({type: 'text', value: '\\n'})\n }\n\n while (++index < nodes.length) {\n if (index) result.push({type: 'text', value: '\\n'})\n result.push(nodes[index])\n }\n\n if (loose && nodes.length > 0) {\n result.push({type: 'text', value: '\\n'})\n }\n\n return result\n}\n\n/**\n * Trim spaces and tabs at the start of `value`.\n *\n * @param {string} value\n * Value to trim.\n * @returns {string}\n * Result.\n */\nfunction trimMarkdownSpaceStart(value) {\n let index = 0\n let code = value.charCodeAt(index)\n\n while (code === 9 || code === 32) {\n index++\n code = value.charCodeAt(index)\n }\n\n return value.slice(index)\n}\n","/**\n * @typedef {import('hast').Nodes} HastNodes\n * @typedef {import('mdast').Nodes} MdastNodes\n * @typedef {import('./state.js').Options} Options\n */\n\nimport {ok as assert} from 'devlop'\nimport {footer} from './footer.js'\nimport {createState} from './state.js'\n\n/**\n * Transform mdast to hast.\n *\n * ##### Notes\n *\n * ###### HTML\n *\n * Raw HTML is available in mdast as `html` nodes and can be embedded in hast\n * as semistandard `raw` nodes.\n * Most utilities ignore `raw` nodes but two notable ones don’t:\n *\n * * `hast-util-to-html` also has an option `allowDangerousHtml` which will\n * output the raw HTML.\n * This is typically discouraged as noted by the option name but is useful\n * if you completely trust authors\n * * `hast-util-raw` can handle the raw embedded HTML strings by parsing them\n * into standard hast nodes (`element`, `text`, etc).\n * This is a heavy task as it needs a full HTML parser, but it is the only\n * way to support untrusted content\n *\n * ###### Footnotes\n *\n * Many options supported here relate to footnotes.\n * Footnotes are not specified by CommonMark, which we follow by default.\n * They are supported by GitHub, so footnotes can be enabled in markdown with\n * `mdast-util-gfm`.\n *\n * The options `footnoteBackLabel` and `footnoteLabel` define natural language\n * that explains footnotes, which is hidden for sighted users but shown to\n * assistive technology.\n * When your page is not in English, you must define translated values.\n *\n * Back references use ARIA attributes, but the section label itself uses a\n * heading that is hidden with an `sr-only` class.\n * To show it to sighted users, define different attributes in\n * `footnoteLabelProperties`.\n *\n * ###### Clobbering\n *\n * Footnotes introduces a problem, as it links footnote calls to footnote\n * definitions on the page through `id` attributes generated from user content,\n * which results in DOM clobbering.\n *\n * DOM clobbering is this:\n *\n * ```html\n * \n * \n * ```\n *\n * Elements by their ID are made available by browsers on the `window` object,\n * which is a security risk.\n * Using a prefix solves this problem.\n *\n * More information on how to handle clobbering and the prefix is explained in\n * Example: headings (DOM clobbering) in `rehype-sanitize`.\n *\n * ###### Unknown nodes\n *\n * Unknown nodes are nodes with a type that isn’t in `handlers` or `passThrough`.\n * The default behavior for unknown nodes is:\n *\n * * when the node has a `value` (and doesn’t have `data.hName`,\n * `data.hProperties`, or `data.hChildren`, see later), create a hast `text`\n * node\n * * otherwise, create a `` element (which could be changed with\n * `data.hName`), with its children mapped from mdast to hast as well\n *\n * This behavior can be changed by passing an `unknownHandler`.\n *\n * @param {MdastNodes} tree\n * mdast tree.\n * @param {Options | null | undefined} [options]\n * Configuration (optional).\n * @returns {HastNodes}\n * hast tree.\n */\nexport function toHast(tree, options) {\n const state = createState(tree, options)\n const node = state.one(tree, undefined)\n const foot = footer(state)\n /** @type {HastNodes} */\n const result = Array.isArray(node)\n ? {type: 'root', children: node}\n : node || {type: 'root', children: []}\n\n if (foot) {\n // If there’s a footer, there were definitions, meaning block\n // content.\n // So `result` is a parent node.\n assert('children' in result)\n result.children.push({type: 'text', value: '\\n'}, foot)\n }\n\n return result\n}\n","// Include `data` fields in mdast and `raw` nodes in hast.\n///
\n\n/**\n * @import {Root as HastRoot} from 'hast'\n * @import {Root as MdastRoot} from 'mdast'\n * @import {Options as ToHastOptions} from 'mdast-util-to-hast'\n * @import {Processor} from 'unified'\n * @import {VFile} from 'vfile'\n */\n\n/**\n * @typedef {Omit
} Options\n *\n * @callback TransformBridge\n * Bridge-mode.\n *\n * Runs the destination with the new hast tree.\n * Discards result.\n * @param {MdastRoot} tree\n * Tree.\n * @param {VFile} file\n * File.\n * @returns {Promise}\n * Nothing.\n *\n * @callback TransformMutate\n * Mutate-mode.\n *\n * Further transformers run on the hast tree.\n * @param {MdastRoot} tree\n * Tree.\n * @param {VFile} file\n * File.\n * @returns {HastRoot}\n * Tree (hast).\n */\n\nimport {toHast} from 'mdast-util-to-hast'\n\n/**\n * Turn markdown into HTML.\n *\n * ##### Notes\n *\n * ###### Signature\n *\n * * if a processor is given, runs the (rehype) plugins used on it with a\n * hast tree, then discards the result (*bridge mode*)\n * * otherwise, returns a hast tree, the plugins used after `remarkRehype`\n * are rehype plugins (*mutate mode*)\n *\n * > 👉 **Note**: It’s highly unlikely that you want to pass a `processor`.\n *\n * ###### HTML\n *\n * Raw HTML is available in mdast as `html` nodes and can be embedded in hast\n * as semistandard `raw` nodes.\n * Most plugins ignore `raw` nodes but two notable ones don’t:\n *\n * * `rehype-stringify` also has an option `allowDangerousHtml` which will\n * output the raw HTML.\n * This is typically discouraged as noted by the option name but is useful if\n * you completely trust authors\n * * `rehype-raw` can handle the raw embedded HTML strings by parsing them\n * into standard hast nodes (`element`, `text`, etc).\n * This is a heavy task as it needs a full HTML parser, but it is the only way\n * to support untrusted content\n *\n * ###### Footnotes\n *\n * Many options supported here relate to footnotes.\n * Footnotes are not specified by CommonMark, which we follow by default.\n * They are supported by GitHub, so footnotes can be enabled in markdown with\n * `remark-gfm`.\n *\n * The options `footnoteBackLabel` and `footnoteLabel` define natural language\n * that explains footnotes, which is hidden for sighted users but shown to\n * assistive technology.\n * When your page is not in English, you must define translated values.\n *\n * Back references use ARIA attributes, but the section label itself uses a\n * heading that is hidden with an `sr-only` class.\n * To show it to sighted users, define different attributes in\n * `footnoteLabelProperties`.\n *\n * ###### Clobbering\n *\n * Footnotes introduces a problem, as it links footnote calls to footnote\n * definitions on the page through `id` attributes generated from user content,\n * which results in DOM clobbering.\n *\n * DOM clobbering is this:\n *\n * ```html\n * \n * \n * ```\n *\n * Elements by their ID are made available by browsers on the `window` object,\n * which is a security risk.\n * Using a prefix solves this problem.\n *\n * More information on how to handle clobbering and the prefix is explained in\n * *Example: headings (DOM clobbering)* in `rehype-sanitize`.\n *\n * ###### Unknown nodes\n *\n * Unknown nodes are nodes with a type that isn’t in `handlers` or `passThrough`.\n * The default behavior for unknown nodes is:\n *\n * * when the node has a `value` (and doesn’t have `data.hName`,\n * `data.hProperties`, or `data.hChildren`, see later), create a hast `text`\n * node\n * * otherwise, create a `` element (which could be changed with\n * `data.hName`), with its children mapped from mdast to hast as well\n *\n * This behavior can be changed by passing an `unknownHandler`.\n *\n * @overload\n * @param {Processor} processor\n * @param {Readonly
| null | undefined} [options]\n * @returns {TransformBridge}\n *\n * @overload\n * @param {Readonly | null | undefined} [options]\n * @returns {TransformMutate}\n *\n * @param {Readonly | Processor | null | undefined} [destination]\n * Processor or configuration (optional).\n * @param {Readonly | null | undefined} [options]\n * When a processor was given, configuration (optional).\n * @returns {TransformBridge | TransformMutate}\n * Transform.\n */\nexport default function remarkRehype(destination, options) {\n if (destination && 'run' in destination) {\n /**\n * @type {TransformBridge}\n */\n return async function (tree, file) {\n // Cast because root in -> root out.\n const hastTree = /** @type {HastRoot} */ (\n toHast(tree, {file, ...options})\n )\n await destination.run(hastTree, file)\n }\n }\n\n /**\n * @type {TransformMutate}\n */\n return function (tree, file) {\n // Cast because root in -> root out.\n // To do: in the future, disallow ` || options` fallback.\n // With `unified-engine`, `destination` can be `undefined` but\n // `options` will be the file set.\n // We should not pass that as `options`.\n return /** @type {HastRoot} */ (\n toHast(tree, {file, ...(destination || options)})\n )\n }\n}\n","/**\n * Throw a given error.\n *\n * @param {Error|null|undefined} [error]\n * Maybe error.\n * @returns {asserts error is null|undefined}\n */\nexport function bail(error) {\n if (error) {\n throw error\n }\n}\n","export default function isPlainObject(value) {\n\tif (typeof value !== 'object' || value === null) {\n\t\treturn false;\n\t}\n\n\tconst prototype = Object.getPrototypeOf(value);\n\treturn (prototype === null || prototype === Object.prototype || Object.getPrototypeOf(prototype) === null) && !(Symbol.toStringTag in value) && !(Symbol.iterator in value);\n}\n","// To do: remove `void`s\n// To do: remove `null` from output of our APIs, allow it as user APIs.\n\n/**\n * @typedef {(error?: Error | null | undefined, ...output: Array) => void} Callback\n * Callback.\n *\n * @typedef {(...input: Array) => any} Middleware\n * Ware.\n *\n * @typedef Pipeline\n * Pipeline.\n * @property {Run} run\n * Run the pipeline.\n * @property {Use} use\n * Add middleware.\n *\n * @typedef {(...input: Array) => void} Run\n * Call all middleware.\n *\n * Calls `done` on completion with either an error or the output of the\n * last middleware.\n *\n * > 👉 **Note**: as the length of input defines whether async functions get a\n * > `next` function,\n * > it’s recommended to keep `input` at one value normally.\n\n *\n * @typedef {(fn: Middleware) => Pipeline} Use\n * Add middleware.\n */\n\n/**\n * Create new middleware.\n *\n * @returns {Pipeline}\n * Pipeline.\n */\nexport function trough() {\n /** @type {Array} */\n const fns = []\n /** @type {Pipeline} */\n const pipeline = {run, use}\n\n return pipeline\n\n /** @type {Run} */\n function run(...values) {\n let middlewareIndex = -1\n /** @type {Callback} */\n const callback = values.pop()\n\n if (typeof callback !== 'function') {\n throw new TypeError('Expected function as last argument, not ' + callback)\n }\n\n next(null, ...values)\n\n /**\n * Run the next `fn`, or we’re done.\n *\n * @param {Error | null | undefined} error\n * @param {Array} output\n */\n function next(error, ...output) {\n const fn = fns[++middlewareIndex]\n let index = -1\n\n if (error) {\n callback(error)\n return\n }\n\n // Copy non-nullish input into values.\n while (++index < values.length) {\n if (output[index] === null || output[index] === undefined) {\n output[index] = values[index]\n }\n }\n\n // Save the newly created `output` for the next call.\n values = output\n\n // Next or done.\n if (fn) {\n wrap(fn, next)(...output)\n } else {\n callback(null, ...output)\n }\n }\n }\n\n /** @type {Use} */\n function use(middelware) {\n if (typeof middelware !== 'function') {\n throw new TypeError(\n 'Expected `middelware` to be a function, not ' + middelware\n )\n }\n\n fns.push(middelware)\n return pipeline\n }\n}\n\n/**\n * Wrap `middleware` into a uniform interface.\n *\n * You can pass all input to the resulting function.\n * `callback` is then called with the output of `middleware`.\n *\n * If `middleware` accepts more arguments than the later given in input,\n * an extra `done` function is passed to it after that input,\n * which must be called by `middleware`.\n *\n * The first value in `input` is the main input value.\n * All other input values are the rest input values.\n * The values given to `callback` are the input values,\n * merged with every non-nullish output value.\n *\n * * if `middleware` throws an error,\n * returns a promise that is rejected,\n * or calls the given `done` function with an error,\n * `callback` is called with that error\n * * if `middleware` returns a value or returns a promise that is resolved,\n * that value is the main output value\n * * if `middleware` calls `done`,\n * all non-nullish values except for the first one (the error) overwrite the\n * output values\n *\n * @param {Middleware} middleware\n * Function to wrap.\n * @param {Callback} callback\n * Callback called with the output of `middleware`.\n * @returns {Run}\n * Wrapped middleware.\n */\nexport function wrap(middleware, callback) {\n /** @type {boolean} */\n let called\n\n return wrapped\n\n /**\n * Call `middleware`.\n * @this {any}\n * @param {Array} parameters\n * @returns {void}\n */\n function wrapped(...parameters) {\n const fnExpectsCallback = middleware.length > parameters.length\n /** @type {any} */\n let result\n\n if (fnExpectsCallback) {\n parameters.push(done)\n }\n\n try {\n result = middleware.apply(this, parameters)\n } catch (error) {\n const exception = /** @type {Error} */ (error)\n\n // Well, this is quite the pickle.\n // `middleware` received a callback and called it synchronously, but that\n // threw an error.\n // The only thing left to do is to throw the thing instead.\n if (fnExpectsCallback && called) {\n throw exception\n }\n\n return done(exception)\n }\n\n if (!fnExpectsCallback) {\n if (result && result.then && typeof result.then === 'function') {\n result.then(then, done)\n } else if (result instanceof Error) {\n done(result)\n } else {\n then(result)\n }\n }\n }\n\n /**\n * Call `callback`, only once.\n *\n * @type {Callback}\n */\n function done(error, ...output) {\n if (!called) {\n called = true\n callback(error, ...output)\n }\n }\n\n /**\n * Call `done` with one value.\n *\n * @param {any} [value]\n */\n function then(value) {\n done(null, value)\n }\n}\n","// A derivative work based on:\n// .\n// Which is licensed:\n//\n// MIT License\n//\n// Copyright (c) 2013 James Halliday\n//\n// Permission is hereby granted, free of charge, to any person obtaining a copy of\n// this software and associated documentation files (the \"Software\"), to deal in\n// the Software without restriction, including without limitation the rights to\n// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of\n// the Software, and to permit persons to whom the Software is furnished to do so,\n// subject to the following conditions:\n//\n// The above copyright notice and this permission notice shall be included in all\n// copies or substantial portions of the Software.\n//\n// THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS\n// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR\n// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER\n// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN\n// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.\n// A derivative work based on:\n//\n// Parts of that are extracted from Node’s internal `path` module:\n// .\n// Which is licensed:\n//\n// Copyright Joyent, Inc. and other Node contributors.\n//\n// Permission is hereby granted, free of charge, to any person obtaining a\n// copy of this software and associated documentation files (the\n// \"Software\"), to deal in the Software without restriction, including\n// without limitation the rights to use, copy, modify, merge, publish,\n// distribute, sublicense, and/or sell copies of the Software, and to permit\n// persons to whom the Software is furnished to do so, subject to the\n// following conditions:\n//\n// The above copyright notice and this permission notice shall be included\n// in all copies or substantial portions of the Software.\n//\n// THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS\n// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF\n// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN\n// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,\n// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR\n// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE\n// USE OR OTHER DEALINGS IN THE SOFTWARE.\n\nexport const minpath = {basename, dirname, extname, join, sep: '/'}\n\n/* eslint-disable max-depth, complexity */\n\n/**\n * Get the basename from a path.\n *\n * @param {string} path\n * File path.\n * @param {string | null | undefined} [extname]\n * Extension to strip.\n * @returns {string}\n * Stem or basename.\n */\nfunction basename(path, extname) {\n if (extname !== undefined && typeof extname !== 'string') {\n throw new TypeError('\"ext\" argument must be a string')\n }\n\n assertPath(path)\n let start = 0\n let end = -1\n let index = path.length\n /** @type {boolean | undefined} */\n let seenNonSlash\n\n if (\n extname === undefined ||\n extname.length === 0 ||\n extname.length > path.length\n ) {\n while (index--) {\n if (path.codePointAt(index) === 47 /* `/` */) {\n // If we reached a path separator that was not part of a set of path\n // separators at the end of the string, stop now.\n if (seenNonSlash) {\n start = index + 1\n break\n }\n } else if (end < 0) {\n // We saw the first non-path separator, mark this as the end of our\n // path component.\n seenNonSlash = true\n end = index + 1\n }\n }\n\n return end < 0 ? '' : path.slice(start, end)\n }\n\n if (extname === path) {\n return ''\n }\n\n let firstNonSlashEnd = -1\n let extnameIndex = extname.length - 1\n\n while (index--) {\n if (path.codePointAt(index) === 47 /* `/` */) {\n // If we reached a path separator that was not part of a set of path\n // separators at the end of the string, stop now.\n if (seenNonSlash) {\n start = index + 1\n break\n }\n } else {\n if (firstNonSlashEnd < 0) {\n // We saw the first non-path separator, remember this index in case\n // we need it if the extension ends up not matching.\n seenNonSlash = true\n firstNonSlashEnd = index + 1\n }\n\n if (extnameIndex > -1) {\n // Try to match the explicit extension.\n if (path.codePointAt(index) === extname.codePointAt(extnameIndex--)) {\n if (extnameIndex < 0) {\n // We matched the extension, so mark this as the end of our path\n // component\n end = index\n }\n } else {\n // Extension does not match, so our result is the entire path\n // component\n extnameIndex = -1\n end = firstNonSlashEnd\n }\n }\n }\n }\n\n if (start === end) {\n end = firstNonSlashEnd\n } else if (end < 0) {\n end = path.length\n }\n\n return path.slice(start, end)\n}\n\n/**\n * Get the dirname from a path.\n *\n * @param {string} path\n * File path.\n * @returns {string}\n * File path.\n */\nfunction dirname(path) {\n assertPath(path)\n\n if (path.length === 0) {\n return '.'\n }\n\n let end = -1\n let index = path.length\n /** @type {boolean | undefined} */\n let unmatchedSlash\n\n // Prefix `--` is important to not run on `0`.\n while (--index) {\n if (path.codePointAt(index) === 47 /* `/` */) {\n if (unmatchedSlash) {\n end = index\n break\n }\n } else if (!unmatchedSlash) {\n // We saw the first non-path separator\n unmatchedSlash = true\n }\n }\n\n return end < 0\n ? path.codePointAt(0) === 47 /* `/` */\n ? '/'\n : '.'\n : end === 1 && path.codePointAt(0) === 47 /* `/` */\n ? '//'\n : path.slice(0, end)\n}\n\n/**\n * Get an extname from a path.\n *\n * @param {string} path\n * File path.\n * @returns {string}\n * Extname.\n */\nfunction extname(path) {\n assertPath(path)\n\n let index = path.length\n\n let end = -1\n let startPart = 0\n let startDot = -1\n // Track the state of characters (if any) we see before our first dot and\n // after any path separator we find.\n let preDotState = 0\n /** @type {boolean | undefined} */\n let unmatchedSlash\n\n while (index--) {\n const code = path.codePointAt(index)\n\n if (code === 47 /* `/` */) {\n // If we reached a path separator that was not part of a set of path\n // separators at the end of the string, stop now.\n if (unmatchedSlash) {\n startPart = index + 1\n break\n }\n\n continue\n }\n\n if (end < 0) {\n // We saw the first non-path separator, mark this as the end of our\n // extension.\n unmatchedSlash = true\n end = index + 1\n }\n\n if (code === 46 /* `.` */) {\n // If this is our first dot, mark it as the start of our extension.\n if (startDot < 0) {\n startDot = index\n } else if (preDotState !== 1) {\n preDotState = 1\n }\n } else if (startDot > -1) {\n // We saw a non-dot and non-path separator before our dot, so we should\n // have a good chance at having a non-empty extension.\n preDotState = -1\n }\n }\n\n if (\n startDot < 0 ||\n end < 0 ||\n // We saw a non-dot character immediately before the dot.\n preDotState === 0 ||\n // The (right-most) trimmed path component is exactly `..`.\n (preDotState === 1 && startDot === end - 1 && startDot === startPart + 1)\n ) {\n return ''\n }\n\n return path.slice(startDot, end)\n}\n\n/**\n * Join segments from a path.\n *\n * @param {Array} segments\n * Path segments.\n * @returns {string}\n * File path.\n */\nfunction join(...segments) {\n let index = -1\n /** @type {string | undefined} */\n let joined\n\n while (++index < segments.length) {\n assertPath(segments[index])\n\n if (segments[index]) {\n joined =\n joined === undefined ? segments[index] : joined + '/' + segments[index]\n }\n }\n\n return joined === undefined ? '.' : normalize(joined)\n}\n\n/**\n * Normalize a basic file path.\n *\n * @param {string} path\n * File path.\n * @returns {string}\n * File path.\n */\n// Note: `normalize` is not exposed as `path.normalize`, so some code is\n// manually removed from it.\nfunction normalize(path) {\n assertPath(path)\n\n const absolute = path.codePointAt(0) === 47 /* `/` */\n\n // Normalize the path according to POSIX rules.\n let value = normalizeString(path, !absolute)\n\n if (value.length === 0 && !absolute) {\n value = '.'\n }\n\n if (value.length > 0 && path.codePointAt(path.length - 1) === 47 /* / */) {\n value += '/'\n }\n\n return absolute ? '/' + value : value\n}\n\n/**\n * Resolve `.` and `..` elements in a path with directory names.\n *\n * @param {string} path\n * File path.\n * @param {boolean} allowAboveRoot\n * Whether `..` can move above root.\n * @returns {string}\n * File path.\n */\nfunction normalizeString(path, allowAboveRoot) {\n let result = ''\n let lastSegmentLength = 0\n let lastSlash = -1\n let dots = 0\n let index = -1\n /** @type {number | undefined} */\n let code\n /** @type {number} */\n let lastSlashIndex\n\n while (++index <= path.length) {\n if (index < path.length) {\n code = path.codePointAt(index)\n } else if (code === 47 /* `/` */) {\n break\n } else {\n code = 47 /* `/` */\n }\n\n if (code === 47 /* `/` */) {\n if (lastSlash === index - 1 || dots === 1) {\n // Empty.\n } else if (lastSlash !== index - 1 && dots === 2) {\n if (\n result.length < 2 ||\n lastSegmentLength !== 2 ||\n result.codePointAt(result.length - 1) !== 46 /* `.` */ ||\n result.codePointAt(result.length - 2) !== 46 /* `.` */\n ) {\n if (result.length > 2) {\n lastSlashIndex = result.lastIndexOf('/')\n\n if (lastSlashIndex !== result.length - 1) {\n if (lastSlashIndex < 0) {\n result = ''\n lastSegmentLength = 0\n } else {\n result = result.slice(0, lastSlashIndex)\n lastSegmentLength = result.length - 1 - result.lastIndexOf('/')\n }\n\n lastSlash = index\n dots = 0\n continue\n }\n } else if (result.length > 0) {\n result = ''\n lastSegmentLength = 0\n lastSlash = index\n dots = 0\n continue\n }\n }\n\n if (allowAboveRoot) {\n result = result.length > 0 ? result + '/..' : '..'\n lastSegmentLength = 2\n }\n } else {\n if (result.length > 0) {\n result += '/' + path.slice(lastSlash + 1, index)\n } else {\n result = path.slice(lastSlash + 1, index)\n }\n\n lastSegmentLength = index - lastSlash - 1\n }\n\n lastSlash = index\n dots = 0\n } else if (code === 46 /* `.` */ && dots > -1) {\n dots++\n } else {\n dots = -1\n }\n }\n\n return result\n}\n\n/**\n * Make sure `path` is a string.\n *\n * @param {string} path\n * File path.\n * @returns {asserts path is string}\n * Nothing.\n */\nfunction assertPath(path) {\n if (typeof path !== 'string') {\n throw new TypeError(\n 'Path must be a string. Received ' + JSON.stringify(path)\n )\n }\n}\n\n/* eslint-enable max-depth, complexity */\n","// Somewhat based on:\n// .\n// But I don’t think one tiny line of code can be copyrighted. 😅\nexport const minproc = {cwd}\n\nfunction cwd() {\n return '/'\n}\n","/**\n * Checks if a value has the shape of a WHATWG URL object.\n *\n * Using a symbol or instanceof would not be able to recognize URL objects\n * coming from other implementations (e.g. in Electron), so instead we are\n * checking some well known properties for a lack of a better test.\n *\n * We use `href` and `protocol` as they are the only properties that are\n * easy to retrieve and calculate due to the lazy nature of the getters.\n *\n * We check for auth attribute to distinguish legacy url instance with\n * WHATWG URL instance.\n *\n * @param {unknown} fileUrlOrPath\n * File path or URL.\n * @returns {fileUrlOrPath is URL}\n * Whether it’s a URL.\n */\n// From: \nexport function isUrl(fileUrlOrPath) {\n return Boolean(\n fileUrlOrPath !== null &&\n typeof fileUrlOrPath === 'object' &&\n 'href' in fileUrlOrPath &&\n fileUrlOrPath.href &&\n 'protocol' in fileUrlOrPath &&\n fileUrlOrPath.protocol &&\n // @ts-expect-error: indexing is fine.\n fileUrlOrPath.auth === undefined\n )\n}\n","import {isUrl} from './minurl.shared.js'\n\nexport {isUrl} from './minurl.shared.js'\n\n// See: \n\n/**\n * @param {URL | string} path\n * File URL.\n * @returns {string}\n * File URL.\n */\nexport function urlToPath(path) {\n if (typeof path === 'string') {\n path = new URL(path)\n } else if (!isUrl(path)) {\n /** @type {NodeJS.ErrnoException} */\n const error = new TypeError(\n 'The \"path\" argument must be of type string or an instance of URL. Received `' +\n path +\n '`'\n )\n error.code = 'ERR_INVALID_ARG_TYPE'\n throw error\n }\n\n if (path.protocol !== 'file:') {\n /** @type {NodeJS.ErrnoException} */\n const error = new TypeError('The URL must be of scheme file')\n error.code = 'ERR_INVALID_URL_SCHEME'\n throw error\n }\n\n return getPathFromURLPosix(path)\n}\n\n/**\n * Get a path from a POSIX URL.\n *\n * @param {URL} url\n * URL.\n * @returns {string}\n * File path.\n */\nfunction getPathFromURLPosix(url) {\n if (url.hostname !== '') {\n /** @type {NodeJS.ErrnoException} */\n const error = new TypeError(\n 'File URL host must be \"localhost\" or empty on darwin'\n )\n error.code = 'ERR_INVALID_FILE_URL_HOST'\n throw error\n }\n\n const pathname = url.pathname\n let index = -1\n\n while (++index < pathname.length) {\n if (\n pathname.codePointAt(index) === 37 /* `%` */ &&\n pathname.codePointAt(index + 1) === 50 /* `2` */\n ) {\n const third = pathname.codePointAt(index + 2)\n if (third === 70 /* `F` */ || third === 102 /* `f` */) {\n /** @type {NodeJS.ErrnoException} */\n const error = new TypeError(\n 'File URL path must not include encoded / characters'\n )\n error.code = 'ERR_INVALID_FILE_URL_PATH'\n throw error\n }\n }\n }\n\n return decodeURIComponent(pathname)\n}\n","/**\n * @import {Node, Point, Position} from 'unist'\n * @import {Options as MessageOptions} from 'vfile-message'\n * @import {Compatible, Data, Map, Options, Value} from 'vfile'\n */\n\n/**\n * @typedef {object & {type: string, position?: Position | undefined}} NodeLike\n */\n\nimport {VFileMessage} from 'vfile-message'\nimport {minpath} from '#minpath'\nimport {minproc} from '#minproc'\nimport {urlToPath, isUrl} from '#minurl'\n\n/**\n * Order of setting (least specific to most), we need this because otherwise\n * `{stem: 'a', path: '~/b.js'}` would throw, as a path is needed before a\n * stem can be set.\n */\nconst order = /** @type {const} */ ([\n 'history',\n 'path',\n 'basename',\n 'stem',\n 'extname',\n 'dirname'\n])\n\nexport class VFile {\n /**\n * Create a new virtual file.\n *\n * `options` is treated as:\n *\n * * `string` or `Uint8Array` — `{value: options}`\n * * `URL` — `{path: options}`\n * * `VFile` — shallow copies its data over to the new file\n * * `object` — all fields are shallow copied over to the new file\n *\n * Path related fields are set in the following order (least specific to\n * most specific): `history`, `path`, `basename`, `stem`, `extname`,\n * `dirname`.\n *\n * You cannot set `dirname` or `extname` without setting either `history`,\n * `path`, `basename`, or `stem` too.\n *\n * @param {Compatible | null | undefined} [value]\n * File value.\n * @returns\n * New instance.\n */\n constructor(value) {\n /** @type {Options | VFile} */\n let options\n\n if (!value) {\n options = {}\n } else if (isUrl(value)) {\n options = {path: value}\n } else if (typeof value === 'string' || isUint8Array(value)) {\n options = {value}\n } else {\n options = value\n }\n\n /* eslint-disable no-unused-expressions */\n\n /**\n * Base of `path` (default: `process.cwd()` or `'/'` in browsers).\n *\n * @type {string}\n */\n // Prevent calling `cwd` (which could be expensive) if it’s not needed;\n // the empty string will be overridden in the next block.\n this.cwd = 'cwd' in options ? '' : minproc.cwd()\n\n /**\n * Place to store custom info (default: `{}`).\n *\n * It’s OK to store custom data directly on the file but moving it to\n * `data` is recommended.\n *\n * @type {Data}\n */\n this.data = {}\n\n /**\n * List of file paths the file moved between.\n *\n * The first is the original path and the last is the current path.\n *\n * @type {Array}\n */\n this.history = []\n\n /**\n * List of messages associated with the file.\n *\n * @type {Array}\n */\n this.messages = []\n\n /**\n * Raw value.\n *\n * @type {Value}\n */\n this.value\n\n // The below are non-standard, they are “well-known”.\n // As in, used in several tools.\n /**\n * Source map.\n *\n * This type is equivalent to the `RawSourceMap` type from the `source-map`\n * module.\n *\n * @type {Map | null | undefined}\n */\n this.map\n\n /**\n * Custom, non-string, compiled, representation.\n *\n * This is used by unified to store non-string results.\n * One example is when turning markdown into React nodes.\n *\n * @type {unknown}\n */\n this.result\n\n /**\n * Whether a file was saved to disk.\n *\n * This is used by vfile reporters.\n *\n * @type {boolean}\n */\n this.stored\n /* eslint-enable no-unused-expressions */\n\n // Set path related properties in the correct order.\n let index = -1\n\n while (++index < order.length) {\n const field = order[index]\n\n // Note: we specifically use `in` instead of `hasOwnProperty` to accept\n // `vfile`s too.\n if (\n field in options &&\n options[field] !== undefined &&\n options[field] !== null\n ) {\n // @ts-expect-error: TS doesn’t understand basic reality.\n this[field] = field === 'history' ? [...options[field]] : options[field]\n }\n }\n\n /** @type {string} */\n let field\n\n // Set non-path related properties.\n for (field in options) {\n // @ts-expect-error: fine to set other things.\n if (!order.includes(field)) {\n // @ts-expect-error: fine to set other things.\n this[field] = options[field]\n }\n }\n }\n\n /**\n * Get the basename (including extname) (example: `'index.min.js'`).\n *\n * @returns {string | undefined}\n * Basename.\n */\n get basename() {\n return typeof this.path === 'string'\n ? minpath.basename(this.path)\n : undefined\n }\n\n /**\n * Set basename (including extname) (`'index.min.js'`).\n *\n * Cannot contain path separators (`'/'` on unix, macOS, and browsers, `'\\'`\n * on windows).\n * Cannot be nullified (use `file.path = file.dirname` instead).\n *\n * @param {string} basename\n * Basename.\n * @returns {undefined}\n * Nothing.\n */\n set basename(basename) {\n assertNonEmpty(basename, 'basename')\n assertPart(basename, 'basename')\n this.path = minpath.join(this.dirname || '', basename)\n }\n\n /**\n * Get the parent path (example: `'~'`).\n *\n * @returns {string | undefined}\n * Dirname.\n */\n get dirname() {\n return typeof this.path === 'string'\n ? minpath.dirname(this.path)\n : undefined\n }\n\n /**\n * Set the parent path (example: `'~'`).\n *\n * Cannot be set if there’s no `path` yet.\n *\n * @param {string | undefined} dirname\n * Dirname.\n * @returns {undefined}\n * Nothing.\n */\n set dirname(dirname) {\n assertPath(this.basename, 'dirname')\n this.path = minpath.join(dirname || '', this.basename)\n }\n\n /**\n * Get the extname (including dot) (example: `'.js'`).\n *\n * @returns {string | undefined}\n * Extname.\n */\n get extname() {\n return typeof this.path === 'string'\n ? minpath.extname(this.path)\n : undefined\n }\n\n /**\n * Set the extname (including dot) (example: `'.js'`).\n *\n * Cannot contain path separators (`'/'` on unix, macOS, and browsers, `'\\'`\n * on windows).\n * Cannot be set if there’s no `path` yet.\n *\n * @param {string | undefined} extname\n * Extname.\n * @returns {undefined}\n * Nothing.\n */\n set extname(extname) {\n assertPart(extname, 'extname')\n assertPath(this.dirname, 'extname')\n\n if (extname) {\n if (extname.codePointAt(0) !== 46 /* `.` */) {\n throw new Error('`extname` must start with `.`')\n }\n\n if (extname.includes('.', 1)) {\n throw new Error('`extname` cannot contain multiple dots')\n }\n }\n\n this.path = minpath.join(this.dirname, this.stem + (extname || ''))\n }\n\n /**\n * Get the full path (example: `'~/index.min.js'`).\n *\n * @returns {string}\n * Path.\n */\n get path() {\n return this.history[this.history.length - 1]\n }\n\n /**\n * Set the full path (example: `'~/index.min.js'`).\n *\n * Cannot be nullified.\n * You can set a file URL (a `URL` object with a `file:` protocol) which will\n * be turned into a path with `url.fileURLToPath`.\n *\n * @param {URL | string} path\n * Path.\n * @returns {undefined}\n * Nothing.\n */\n set path(path) {\n if (isUrl(path)) {\n path = urlToPath(path)\n }\n\n assertNonEmpty(path, 'path')\n\n if (this.path !== path) {\n this.history.push(path)\n }\n }\n\n /**\n * Get the stem (basename w/o extname) (example: `'index.min'`).\n *\n * @returns {string | undefined}\n * Stem.\n */\n get stem() {\n return typeof this.path === 'string'\n ? minpath.basename(this.path, this.extname)\n : undefined\n }\n\n /**\n * Set the stem (basename w/o extname) (example: `'index.min'`).\n *\n * Cannot contain path separators (`'/'` on unix, macOS, and browsers, `'\\'`\n * on windows).\n * Cannot be nullified (use `file.path = file.dirname` instead).\n *\n * @param {string} stem\n * Stem.\n * @returns {undefined}\n * Nothing.\n */\n set stem(stem) {\n assertNonEmpty(stem, 'stem')\n assertPart(stem, 'stem')\n this.path = minpath.join(this.dirname || '', stem + (this.extname || ''))\n }\n\n // Normal prototypal methods.\n /**\n * Create a fatal message for `reason` associated with the file.\n *\n * The `fatal` field of the message is set to `true` (error; file not usable)\n * and the `file` field is set to the current file path.\n * The message is added to the `messages` field on `file`.\n *\n * > 🪦 **Note**: also has obsolete signatures.\n *\n * @overload\n * @param {string} reason\n * @param {MessageOptions | null | undefined} [options]\n * @returns {never}\n *\n * @overload\n * @param {string} reason\n * @param {Node | NodeLike | null | undefined} parent\n * @param {string | null | undefined} [origin]\n * @returns {never}\n *\n * @overload\n * @param {string} reason\n * @param {Point | Position | null | undefined} place\n * @param {string | null | undefined} [origin]\n * @returns {never}\n *\n * @overload\n * @param {string} reason\n * @param {string | null | undefined} [origin]\n * @returns {never}\n *\n * @overload\n * @param {Error | VFileMessage} cause\n * @param {Node | NodeLike | null | undefined} parent\n * @param {string | null | undefined} [origin]\n * @returns {never}\n *\n * @overload\n * @param {Error | VFileMessage} cause\n * @param {Point | Position | null | undefined} place\n * @param {string | null | undefined} [origin]\n * @returns {never}\n *\n * @overload\n * @param {Error | VFileMessage} cause\n * @param {string | null | undefined} [origin]\n * @returns {never}\n *\n * @param {Error | VFileMessage | string} causeOrReason\n * Reason for message, should use markdown.\n * @param {Node | NodeLike | MessageOptions | Point | Position | string | null | undefined} [optionsOrParentOrPlace]\n * Configuration (optional).\n * @param {string | null | undefined} [origin]\n * Place in code where the message originates (example:\n * `'my-package:my-rule'` or `'my-rule'`).\n * @returns {never}\n * Never.\n * @throws {VFileMessage}\n * Message.\n */\n fail(causeOrReason, optionsOrParentOrPlace, origin) {\n // @ts-expect-error: the overloads are fine.\n const message = this.message(causeOrReason, optionsOrParentOrPlace, origin)\n\n message.fatal = true\n\n throw message\n }\n\n /**\n * Create an info message for `reason` associated with the file.\n *\n * The `fatal` field of the message is set to `undefined` (info; change\n * likely not needed) and the `file` field is set to the current file path.\n * The message is added to the `messages` field on `file`.\n *\n * > 🪦 **Note**: also has obsolete signatures.\n *\n * @overload\n * @param {string} reason\n * @param {MessageOptions | null | undefined} [options]\n * @returns {VFileMessage}\n *\n * @overload\n * @param {string} reason\n * @param {Node | NodeLike | null | undefined} parent\n * @param {string | null | undefined} [origin]\n * @returns {VFileMessage}\n *\n * @overload\n * @param {string} reason\n * @param {Point | Position | null | undefined} place\n * @param {string | null | undefined} [origin]\n * @returns {VFileMessage}\n *\n * @overload\n * @param {string} reason\n * @param {string | null | undefined} [origin]\n * @returns {VFileMessage}\n *\n * @overload\n * @param {Error | VFileMessage} cause\n * @param {Node | NodeLike | null | undefined} parent\n * @param {string | null | undefined} [origin]\n * @returns {VFileMessage}\n *\n * @overload\n * @param {Error | VFileMessage} cause\n * @param {Point | Position | null | undefined} place\n * @param {string | null | undefined} [origin]\n * @returns {VFileMessage}\n *\n * @overload\n * @param {Error | VFileMessage} cause\n * @param {string | null | undefined} [origin]\n * @returns {VFileMessage}\n *\n * @param {Error | VFileMessage | string} causeOrReason\n * Reason for message, should use markdown.\n * @param {Node | NodeLike | MessageOptions | Point | Position | string | null | undefined} [optionsOrParentOrPlace]\n * Configuration (optional).\n * @param {string | null | undefined} [origin]\n * Place in code where the message originates (example:\n * `'my-package:my-rule'` or `'my-rule'`).\n * @returns {VFileMessage}\n * Message.\n */\n info(causeOrReason, optionsOrParentOrPlace, origin) {\n // @ts-expect-error: the overloads are fine.\n const message = this.message(causeOrReason, optionsOrParentOrPlace, origin)\n\n message.fatal = undefined\n\n return message\n }\n\n /**\n * Create a message for `reason` associated with the file.\n *\n * The `fatal` field of the message is set to `false` (warning; change may be\n * needed) and the `file` field is set to the current file path.\n * The message is added to the `messages` field on `file`.\n *\n * > 🪦 **Note**: also has obsolete signatures.\n *\n * @overload\n * @param {string} reason\n * @param {MessageOptions | null | undefined} [options]\n * @returns {VFileMessage}\n *\n * @overload\n * @param {string} reason\n * @param {Node | NodeLike | null | undefined} parent\n * @param {string | null | undefined} [origin]\n * @returns {VFileMessage}\n *\n * @overload\n * @param {string} reason\n * @param {Point | Position | null | undefined} place\n * @param {string | null | undefined} [origin]\n * @returns {VFileMessage}\n *\n * @overload\n * @param {string} reason\n * @param {string | null | undefined} [origin]\n * @returns {VFileMessage}\n *\n * @overload\n * @param {Error | VFileMessage} cause\n * @param {Node | NodeLike | null | undefined} parent\n * @param {string | null | undefined} [origin]\n * @returns {VFileMessage}\n *\n * @overload\n * @param {Error | VFileMessage} cause\n * @param {Point | Position | null | undefined} place\n * @param {string | null | undefined} [origin]\n * @returns {VFileMessage}\n *\n * @overload\n * @param {Error | VFileMessage} cause\n * @param {string | null | undefined} [origin]\n * @returns {VFileMessage}\n *\n * @param {Error | VFileMessage | string} causeOrReason\n * Reason for message, should use markdown.\n * @param {Node | NodeLike | MessageOptions | Point | Position | string | null | undefined} [optionsOrParentOrPlace]\n * Configuration (optional).\n * @param {string | null | undefined} [origin]\n * Place in code where the message originates (example:\n * `'my-package:my-rule'` or `'my-rule'`).\n * @returns {VFileMessage}\n * Message.\n */\n message(causeOrReason, optionsOrParentOrPlace, origin) {\n const message = new VFileMessage(\n // @ts-expect-error: the overloads are fine.\n causeOrReason,\n optionsOrParentOrPlace,\n origin\n )\n\n if (this.path) {\n message.name = this.path + ':' + message.name\n message.file = this.path\n }\n\n message.fatal = false\n\n this.messages.push(message)\n\n return message\n }\n\n /**\n * Serialize the file.\n *\n * > **Note**: which encodings are supported depends on the engine.\n * > For info on Node.js, see:\n * > .\n *\n * @param {string | null | undefined} [encoding='utf8']\n * Character encoding to understand `value` as when it’s a `Uint8Array`\n * (default: `'utf-8'`).\n * @returns {string}\n * Serialized file.\n */\n toString(encoding) {\n if (this.value === undefined) {\n return ''\n }\n\n if (typeof this.value === 'string') {\n return this.value\n }\n\n const decoder = new TextDecoder(encoding || undefined)\n return decoder.decode(this.value)\n }\n}\n\n/**\n * Assert that `part` is not a path (as in, does not contain `path.sep`).\n *\n * @param {string | null | undefined} part\n * File path part.\n * @param {string} name\n * Part name.\n * @returns {undefined}\n * Nothing.\n */\nfunction assertPart(part, name) {\n if (part && part.includes(minpath.sep)) {\n throw new Error(\n '`' + name + '` cannot be a path: did not expect `' + minpath.sep + '`'\n )\n }\n}\n\n/**\n * Assert that `part` is not empty.\n *\n * @param {string | undefined} part\n * Thing.\n * @param {string} name\n * Part name.\n * @returns {asserts part is string}\n * Nothing.\n */\nfunction assertNonEmpty(part, name) {\n if (!part) {\n throw new Error('`' + name + '` cannot be empty')\n }\n}\n\n/**\n * Assert `path` exists.\n *\n * @param {string | undefined} path\n * Path.\n * @param {string} name\n * Dependency name.\n * @returns {asserts path is string}\n * Nothing.\n */\nfunction assertPath(path, name) {\n if (!path) {\n throw new Error('Setting `' + name + '` requires `path` to be set too')\n }\n}\n\n/**\n * Assert `value` is an `Uint8Array`.\n *\n * @param {unknown} value\n * thing.\n * @returns {value is Uint8Array}\n * Whether `value` is an `Uint8Array`.\n */\nfunction isUint8Array(value) {\n return Boolean(\n value &&\n typeof value === 'object' &&\n 'byteLength' in value &&\n 'byteOffset' in value\n )\n}\n","export const CallableInstance =\n /**\n * @type {new , Result>(property: string | symbol) => (...parameters: Parameters) => Result}\n */\n (\n /** @type {unknown} */\n (\n /**\n * @this {Function}\n * @param {string | symbol} property\n * @returns {(...parameters: Array) => unknown}\n */\n function (property) {\n const self = this\n const constr = self.constructor\n const proto = /** @type {Record} */ (\n // Prototypes do exist.\n // type-coverage:ignore-next-line\n constr.prototype\n )\n const value = proto[property]\n /** @type {(...parameters: Array) => unknown} */\n const apply = function () {\n return value.apply(apply, arguments)\n }\n\n Object.setPrototypeOf(apply, proto)\n\n // Not needed for us in `unified`: we only call this on the `copy`\n // function,\n // and we don't need to add its fields (`length`, `name`)\n // over.\n // See also: GH-246.\n // const names = Object.getOwnPropertyNames(value)\n //\n // for (const p of names) {\n // const descriptor = Object.getOwnPropertyDescriptor(value, p)\n // if (descriptor) Object.defineProperty(apply, p, descriptor)\n // }\n\n return apply\n }\n )\n )\n","/**\n * @typedef {import('trough').Pipeline} Pipeline\n *\n * @typedef {import('unist').Node} Node\n *\n * @typedef {import('vfile').Compatible} Compatible\n * @typedef {import('vfile').Value} Value\n *\n * @typedef {import('../index.js').CompileResultMap} CompileResultMap\n * @typedef {import('../index.js').Data} Data\n * @typedef {import('../index.js').Settings} Settings\n */\n\n/**\n * @typedef {CompileResultMap[keyof CompileResultMap]} CompileResults\n * Acceptable results from compilers.\n *\n * To register custom results, add them to\n * {@linkcode CompileResultMap}.\n */\n\n/**\n * @template {Node} [Tree=Node]\n * The node that the compiler receives (default: `Node`).\n * @template {CompileResults} [Result=CompileResults]\n * The thing that the compiler yields (default: `CompileResults`).\n * @callback Compiler\n * A **compiler** handles the compiling of a syntax tree to something else\n * (in most cases, text) (TypeScript type).\n *\n * It is used in the stringify phase and called with a {@linkcode Node}\n * and {@linkcode VFile} representation of the document to compile.\n * It should return the textual representation of the given tree (typically\n * `string`).\n *\n * > **Note**: unified typically compiles by serializing: most compilers\n * > return `string` (or `Uint8Array`).\n * > Some compilers, such as the one configured with\n * > [`rehype-react`][rehype-react], return other values (in this case, a\n * > React tree).\n * > If you’re using a compiler that doesn’t serialize, expect different\n * > result values.\n * >\n * > To register custom results in TypeScript, add them to\n * > {@linkcode CompileResultMap}.\n *\n * [rehype-react]: https://github.com/rehypejs/rehype-react\n * @param {Tree} tree\n * Tree to compile.\n * @param {VFile} file\n * File associated with `tree`.\n * @returns {Result}\n * New content: compiled text (`string` or `Uint8Array`, for `file.value`) or\n * something else (for `file.result`).\n */\n\n/**\n * @template {Node} [Tree=Node]\n * The node that the parser yields (default: `Node`)\n * @callback Parser\n * A **parser** handles the parsing of text to a syntax tree.\n *\n * It is used in the parse phase and is called with a `string` and\n * {@linkcode VFile} of the document to parse.\n * It must return the syntax tree representation of the given file\n * ({@linkcode Node}).\n * @param {string} document\n * Document to parse.\n * @param {VFile} file\n * File associated with `document`.\n * @returns {Tree}\n * Node representing the given file.\n */\n\n/**\n * @typedef {(\n * Plugin, any, any> |\n * PluginTuple, any, any> |\n * Preset\n * )} Pluggable\n * Union of the different ways to add plugins and settings.\n */\n\n/**\n * @typedef {Array} PluggableList\n * List of plugins and presets.\n */\n\n// Note: we can’t use `callback` yet as it messes up `this`:\n// .\n/**\n * @template {Array} [PluginParameters=[]]\n * Arguments passed to the plugin (default: `[]`, the empty tuple).\n * @template {Node | string | undefined} [Input=Node]\n * Value that is expected as input (default: `Node`).\n *\n * * If the plugin returns a {@linkcode Transformer}, this\n * should be the node it expects.\n * * If the plugin sets a {@linkcode Parser}, this should be\n * `string`.\n * * If the plugin sets a {@linkcode Compiler}, this should be the\n * node it expects.\n * @template [Output=Input]\n * Value that is yielded as output (default: `Input`).\n *\n * * If the plugin returns a {@linkcode Transformer}, this\n * should be the node that that yields.\n * * If the plugin sets a {@linkcode Parser}, this should be the\n * node that it yields.\n * * If the plugin sets a {@linkcode Compiler}, this should be\n * result it yields.\n * @typedef {(\n * (this: Processor, ...parameters: PluginParameters) =>\n * Input extends string ? // Parser.\n * Output extends Node | undefined ? undefined | void : never :\n * Output extends CompileResults ? // Compiler.\n * Input extends Node | undefined ? undefined | void : never :\n * Transformer<\n * Input extends Node ? Input : Node,\n * Output extends Node ? Output : Node\n * > | undefined | void\n * )} Plugin\n * Single plugin.\n *\n * Plugins configure the processors they are applied on in the following\n * ways:\n *\n * * they change the processor, such as the parser, the compiler, or by\n * configuring data\n * * they specify how to handle trees and files\n *\n * In practice, they are functions that can receive options and configure the\n * processor (`this`).\n *\n * > **Note**: plugins are called when the processor is *frozen*, not when\n * > they are applied.\n */\n\n/**\n * Tuple of a plugin and its configuration.\n *\n * The first item is a plugin, the rest are its parameters.\n *\n * @template {Array} [TupleParameters=[]]\n * Arguments passed to the plugin (default: `[]`, the empty tuple).\n * @template {Node | string | undefined} [Input=undefined]\n * Value that is expected as input (optional).\n *\n * * If the plugin returns a {@linkcode Transformer}, this\n * should be the node it expects.\n * * If the plugin sets a {@linkcode Parser}, this should be\n * `string`.\n * * If the plugin sets a {@linkcode Compiler}, this should be the\n * node it expects.\n * @template [Output=undefined] (optional).\n * Value that is yielded as output.\n *\n * * If the plugin returns a {@linkcode Transformer}, this\n * should be the node that that yields.\n * * If the plugin sets a {@linkcode Parser}, this should be the\n * node that it yields.\n * * If the plugin sets a {@linkcode Compiler}, this should be\n * result it yields.\n * @typedef {(\n * [\n * plugin: Plugin,\n * ...parameters: TupleParameters\n * ]\n * )} PluginTuple\n */\n\n/**\n * @typedef Preset\n * Sharable configuration.\n *\n * They can contain plugins and settings.\n * @property {PluggableList | undefined} [plugins]\n * List of plugins and presets (optional).\n * @property {Settings | undefined} [settings]\n * Shared settings for parsers and compilers (optional).\n */\n\n/**\n * @template {VFile} [File=VFile]\n * The file that the callback receives (default: `VFile`).\n * @callback ProcessCallback\n * Callback called when the process is done.\n *\n * Called with either an error or a result.\n * @param {Error | undefined} [error]\n * Fatal error (optional).\n * @param {File | undefined} [file]\n * Processed file (optional).\n * @returns {undefined}\n * Nothing.\n */\n\n/**\n * @template {Node} [Tree=Node]\n * The tree that the callback receives (default: `Node`).\n * @callback RunCallback\n * Callback called when transformers are done.\n *\n * Called with either an error or results.\n * @param {Error | undefined} [error]\n * Fatal error (optional).\n * @param {Tree | undefined} [tree]\n * Transformed tree (optional).\n * @param {VFile | undefined} [file]\n * File (optional).\n * @returns {undefined}\n * Nothing.\n */\n\n/**\n * @template {Node} [Output=Node]\n * Node type that the transformer yields (default: `Node`).\n * @callback TransformCallback\n * Callback passed to transforms.\n *\n * If the signature of a `transformer` accepts a third argument, the\n * transformer may perform asynchronous operations, and must call it.\n * @param {Error | undefined} [error]\n * Fatal error to stop the process (optional).\n * @param {Output | undefined} [tree]\n * New, changed, tree (optional).\n * @param {VFile | undefined} [file]\n * New, changed, file (optional).\n * @returns {undefined}\n * Nothing.\n */\n\n/**\n * @template {Node} [Input=Node]\n * Node type that the transformer expects (default: `Node`).\n * @template {Node} [Output=Input]\n * Node type that the transformer yields (default: `Input`).\n * @callback Transformer\n * Transformers handle syntax trees and files.\n *\n * They are functions that are called each time a syntax tree and file are\n * passed through the run phase.\n * When an error occurs in them (either because it’s thrown, returned,\n * rejected, or passed to `next`), the process stops.\n *\n * The run phase is handled by [`trough`][trough], see its documentation for\n * the exact semantics of these functions.\n *\n * > **Note**: you should likely ignore `next`: don’t accept it.\n * > it supports callback-style async work.\n * > But promises are likely easier to reason about.\n *\n * [trough]: https://github.com/wooorm/trough#function-fninput-next\n * @param {Input} tree\n * Tree to handle.\n * @param {VFile} file\n * File to handle.\n * @param {TransformCallback