`.\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\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/**\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').Footnote} Footnote\n * @typedef {import('../state.js').State} State\n */\n\nimport {footnoteReference} from './footnote-reference.js'\n\n// To do: when both:\n// * \n// * \n// …are archived, remove this (also from mdast).\n// These inline notes are not used in GFM.\n\n/**\n * Turn an mdast `footnote` node into hast.\n *\n * @param {State} state\n * Info passed around.\n * @param {Footnote} node\n * mdast node.\n * @returns {Element}\n * hast node.\n */\nexport function footnote(state, node) {\n const footnoteById = state.footnoteById\n let no = 1\n\n while (no in footnoteById) no++\n\n const identifier = String(no)\n\n footnoteById[identifier] = {\n type: 'footnoteDefinition',\n identifier,\n children: [{type: 'paragraph', children: node.children}],\n position: node.position\n }\n\n return footnoteReference(state, {\n type: 'footnoteReference',\n identifier,\n position: node.position\n })\n}\n","/**\n * @typedef {import('hast').Element} Element\n * @typedef {import('mdast').Heading} Heading\n * @typedef {import('../state.js').State} State\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/**\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 {Raw | Element | null}\n * hast node.\n */\nexport function html(state, node) {\n if (state.dangerous) {\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 // To do: next major: return `undefined`.\n return null\n}\n","/**\n * @typedef {import('hast').ElementContent} ElementContent\n * @typedef {import('hast').Element} Element\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 {ElementContent | Array}\n * hast node.\n */\nexport function imageReference(state, node) {\n const def = state.definition(node.identifier)\n\n if (!def) {\n return revert(state, node)\n }\n\n /** @type {Properties} */\n const properties = {src: normalizeUri(def.url || ''), alt: node.alt}\n\n if (def.title !== null && def.title !== undefined) {\n properties.title = def.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/**\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 {ElementContent | Array}\n * hast node.\n */\nexport function linkReference(state, node) {\n const def = state.definition(node.identifier)\n\n if (!def) {\n return revert(state, node)\n }\n\n /** @type {Properties} */\n const properties = {href: normalizeUri(def.url || '')}\n\n if (def.title !== null && def.title !== undefined) {\n properties.title = def.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/**\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/**\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').Root} HastRoot\n * @typedef {import('hast').Element} HastElement\n * @typedef {import('mdast').Root} MdastRoot\n * @typedef {import('../state.js').State} State\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 {HastRoot | HastElement}\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/**\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 {pointStart, pointEnd} 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.line && end.line) 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/**\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').Properties} Properties\n * @typedef {import('hast').Element} Element\n * @typedef {import('hast').ElementContent} ElementContent\n * @typedef {import('mdast').Content} Content\n * @typedef {import('mdast').Parent} Parent\n * @typedef {import('mdast').Root} Root\n * @typedef {import('mdast').TableRow} TableRow\n * @typedef {import('../state.js').State} State\n */\n\n/**\n * @typedef {Root | Content} Nodes\n * @typedef {Extract} Parents\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 | null | 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 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(node, 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 {HastText | HastElement}\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/**\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').Content} HastContent\n * @typedef {import('hast').Element} HastElement\n * @typedef {import('hast').ElementContent} HastElementContent\n * @typedef {import('hast').Properties} HastProperties\n * @typedef {import('hast').Root} HastRoot\n * @typedef {import('hast').Text} HastText\n *\n * @typedef {import('mdast').Content} MdastContent\n * @typedef {import('mdast').Definition} MdastDefinition\n * @typedef {import('mdast').FootnoteDefinition} MdastFootnoteDefinition\n * @typedef {import('mdast').Parent} MdastParent\n * @typedef {import('mdast').Root} MdastRoot\n */\n\n/**\n * @typedef {HastRoot | HastContent} HastNodes\n * @typedef {MdastRoot | MdastContent} MdastNodes\n * @typedef {Extract} MdastParents\n *\n * @typedef EmbeddedHastFields\n * hast fields.\n * @property {string | null | undefined} [hName]\n * Generate a specific element with this tag name instead.\n * @property {HastProperties | null | undefined} [hProperties]\n * Generate an element with these properties instead.\n * @property {Array | null | undefined} [hChildren]\n * Generate an element with this content instead.\n *\n * @typedef {Record & EmbeddedHastFields} MdastData\n * mdast data with embedded hast fields.\n *\n * @typedef {MdastNodes & {data?: MdastData | null | undefined}} MdastNodeWithData\n * mdast node with embedded hast data.\n *\n * @typedef PointLike\n * Point-like value.\n * @property {number | null | undefined} [line]\n * Line.\n * @property {number | null | undefined} [column]\n * Column.\n * @property {number | null | undefined} [offset]\n * Offset.\n *\n * @typedef PositionLike\n * Position-like value.\n * @property {PointLike | null | undefined} [start]\n * Point-like value.\n * @property {PointLike | null | undefined} [end]\n * Point-like value.\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 | null | undefined} parent\n * Parent of `node`.\n * @returns {HastElementContent | Array | null | undefined}\n * hast node.\n *\n * @callback HFunctionProps\n * Signature of `state` for when props are passed.\n * @param {MdastNodes | PositionLike | null | undefined} node\n * mdast node or unist position.\n * @param {string} tagName\n * HTML tag name.\n * @param {HastProperties} props\n * Properties.\n * @param {Array | null | undefined} [children]\n * hast content.\n * @returns {HastElement}\n * Compiled element.\n *\n * @callback HFunctionNoProps\n * Signature of `state` for when no props are passed.\n * @param {MdastNodes | PositionLike | null | undefined} node\n * mdast node or unist position.\n * @param {string} tagName\n * HTML tag name.\n * @param {Array | null | undefined} [children]\n * hast content.\n * @returns {HastElement}\n * Compiled element.\n *\n * @typedef HFields\n * Info on `state`.\n * @property {boolean} dangerous\n * Whether HTML is allowed.\n * @property {string} clobberPrefix\n * Prefix to use to prevent DOM clobbering.\n * @property {string} footnoteLabel\n * Label to use to introduce the footnote section.\n * @property {string} footnoteLabelTagName\n * HTML used for the footnote label.\n * @property {HastProperties} footnoteLabelProperties\n * Properties on the HTML tag used for the footnote label.\n * @property {string} footnoteBackLabel\n * Label to use from backreferences back to their footnote call.\n * @property {(identifier: string) => MdastDefinition | null} definition\n * Definition cache.\n * @property {Record} footnoteById\n * Footnote definitions by their identifier.\n * @property {Array} footnoteOrder\n * Identifiers of order when footnote calls first appear in tree order.\n * @property {Record} footnoteCounts\n * Counts for how often the same footnote was called.\n * @property {Handlers} handlers\n * Applied handlers.\n * @property {Handler} unknownHandler\n * Handler for any none not in `passThrough` or otherwise handled.\n * @property {(from: MdastNodes, node: HastNodes) => void} patch\n * Copy a node’s positional info.\n * @property {(from: MdastNodes, to: Type) => Type | HastElement} applyData\n * Honor the `data` of `from`, and generate an element instead of `node`.\n * @property {(node: MdastNodes, parent: MdastParents | null | undefined) => HastElementContent | Array | null | undefined} one\n * Transform an mdast node to hast.\n * @property {(node: MdastNodes) => Array} all\n * Transform the children of an mdast parent to hast.\n * @property {(nodes: Array, loose?: boolean | null | undefined) => Array} wrap\n * Wrap `nodes` with line endings between each node, adds initial/final line endings when `loose`.\n * @property {(left: MdastNodeWithData | PositionLike | null | undefined, right: HastElementContent) => HastElementContent} augment\n * Like `state` but lower-level and usable on non-elements.\n * Deprecated: use `patch` and `applyData`.\n * @property {Array} passThrough\n * List of node types to pass through untouched (except for their children).\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.\n * @property {string | null | undefined} [clobberPrefix='user-content-']\n * Prefix to use before the `id` attribute on footnotes to prevent it from\n * *clobbering*.\n * @property {string | null | undefined} [footnoteBackLabel='Back to content']\n * Label to use from backreferences back to their footnote call (affects\n * screen readers).\n * @property {string | null | undefined} [footnoteLabel='Footnotes']\n * Label to use for the footnotes section (affects screen readers).\n * @property {HastProperties | null | undefined} [footnoteLabelProperties={className: ['sr-only']}]\n * Properties to use on the footnote label (note that `id: 'footnote-label'`\n * is always added as footnote calls use it with `aria-describedby` to\n * provide an accessible label).\n * @property {string | null | undefined} [footnoteLabelTagName='h2']\n * Tag name to use for the footnote label.\n * @property {Handlers | null | undefined} [handlers]\n * Extra handlers for nodes.\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 * @property {Handler | null | undefined} [unknownHandler]\n * Handler for all unknown nodes.\n *\n * @typedef {Record} Handlers\n * Handle nodes.\n *\n * @typedef {HFunctionProps & HFunctionNoProps & HFields} State\n * Info passed around.\n */\n\nimport {visit} from 'unist-util-visit'\nimport {position, pointStart, pointEnd} from 'unist-util-position'\nimport {generated} from 'unist-util-generated'\nimport {definitions} from 'mdast-util-definitions'\nimport {handlers} from './handlers/index.js'\n\nconst own = {}.hasOwnProperty\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.\n * @returns {State}\n * `state` function.\n */\nexport function createState(tree, options) {\n const settings = options || {}\n const dangerous = settings.allowDangerousHtml || false\n /** @type {Record} */\n const footnoteById = {}\n\n // To do: next major: add `options` to state, remove:\n // `dangerous`, `clobberPrefix`, `footnoteLabel`, `footnoteLabelTagName`,\n // `footnoteLabelProperties`, `footnoteBackLabel`, `passThrough`,\n // `unknownHandler`.\n\n // To do: next major: move to `state.options.allowDangerousHtml`.\n state.dangerous = dangerous\n // To do: next major: move to `state.options`.\n state.clobberPrefix =\n settings.clobberPrefix === undefined || settings.clobberPrefix === null\n ? 'user-content-'\n : settings.clobberPrefix\n // To do: next major: move to `state.options`.\n state.footnoteLabel = settings.footnoteLabel || 'Footnotes'\n // To do: next major: move to `state.options`.\n state.footnoteLabelTagName = settings.footnoteLabelTagName || 'h2'\n // To do: next major: move to `state.options`.\n state.footnoteLabelProperties = settings.footnoteLabelProperties || {\n className: ['sr-only']\n }\n // To do: next major: move to `state.options`.\n state.footnoteBackLabel = settings.footnoteBackLabel || 'Back to content'\n // To do: next major: move to `state.options`.\n state.unknownHandler = settings.unknownHandler\n // To do: next major: move to `state.options`.\n state.passThrough = settings.passThrough\n\n state.handlers = {...handlers, ...settings.handlers}\n\n // To do: next major: replace utility with `definitionById` object, so we\n // only walk once (as we need footnotes too).\n state.definition = definitions(tree)\n state.footnoteById = footnoteById\n /** @type {Array} */\n state.footnoteOrder = []\n /** @type {Record