@liveblocks/react-ui/dist/primitives/Markdown.js

A set of React pre-built components for the Liveblocks products. Liveblocks is the all-in-one toolkit to build collaborative products like Figma, Notion, and more.

import { jsx, jsxs, Fragment } from 'react/jsx-runtime';
import { assertNever, sanitizeUrl, isUrl } from '@liveblocks/core';
import { Slot } from '@radix-ui/react-slot';
import { Lexer } from 'marked';
import { forwardRef, useMemo, memo } from 'react';

const LIST_ITEM_CHECKBOX_REGEX = /^\[\s?(x)?\]?$/i;
const PARTIAL_LINK_IMAGE_REGEX = /(?<!\\)(?<image>!)?\[(?!\^)(?<text>[^\]]*)(?:\](?:\((?<url>[^)]*)?)?)?$/;
const PARTIAL_TABLE_HEADER_REGEX = /^\s*\|(?:[^|\n]+(?:\|[^|\n]+)*?)?\|?\s*(?:\n\s*\|\s*[-:|\s]*\s*)?$/;
const PARTIAL_EMOJI_REGEX = /(?:\u200D|\uFE0F|\u20E3|\p{Regional_Indicator}|\p{Emoji_Presentation}|\p{Emoji_Modifier_Base}|\p{Emoji_Modifier})+$/u;
const TRAILING_NON_WHITESPACE_REGEX = /^\S*/;
const WHITESPACE_REGEX = /\s/;
const NEWLINE_REGEX = /\r\n?/g;
const BUFFERED_CHARACTERS_REGEX = /(?<!\\)((\*+|_+|~+|`+|\++|-{0,2}|={0,2}|\\|!|<\/?)\s*)$/;
const SINGLE_CHARACTER_REGEX = /^\s*(\S\s*)$/;
const LEFT_ANGLE_BRACKET_REGEX = /</g;
const RIGHT_ANGLE_BRACKET_REGEX = />/g;
const AMPERSAND_REGEX = /&(?!#?[0-9A-Za-z]+;)/g;
const DEFAULT_PARTIAL_LINK_URL = "#";
const defaultComponents = {
  Paragraph: ({ children }) => {
    return /* @__PURE__ */ jsx("p", { children });
  },
  Inline: ({ type, children }) => {
    switch (type) {
      case "strong":
        return /* @__PURE__ */ jsx("strong", { children });
      case "em":
        return /* @__PURE__ */ jsx("em", { children });
      case "code":
        return /* @__PURE__ */ jsx("code", { children });
      case "del":
        return /* @__PURE__ */ jsx("del", { children });
      default:
        assertNever(type, "Unknown inline type");
    }
  },
  CodeBlock: ({ language, code }) => {
    return /* @__PURE__ */ jsx("pre", { "data-language": language ?? void 0, children: /* @__PURE__ */ jsx("code", { children: code }) });
  },
  Link: ({ href, title, children }) => {
    return /* @__PURE__ */ jsx("a", { href, title, target: "_blank", rel: "noopener noreferrer", children });
  },
  Heading: ({ level, children }) => {
    const Heading = `h${level}`;
    return /* @__PURE__ */ jsx(Heading, { children });
  },
  Image: ({ src, alt, title }) => {
    return /* @__PURE__ */ jsx("img", { src, alt, title });
  },
  Blockquote: ({ children }) => {
    return /* @__PURE__ */ jsx("blockquote", { children });
  },
  Table: ({ headings, rows }) => {
    return /* @__PURE__ */ jsxs("table", { children: [
      /* @__PURE__ */ jsx("thead", { children: /* @__PURE__ */ jsx("tr", { children: headings.map((heading, index) => {
        return /* @__PURE__ */ jsx("th", { align: heading.align, children: heading.children }, index);
      }) }) }),
      /* @__PURE__ */ jsx("tbody", { children: rows.map((row, index) => {
        return /* @__PURE__ */ jsx("tr", { children: row.map((cell, index2) => {
          return /* @__PURE__ */ jsx("td", { align: cell.align, children: cell.children }, index2);
        }) }, index);
      }) })
    ] });
  },
  List: ({ type, items, start }) => {
    const List = type === "ordered" ? "ol" : "ul";
    return /* @__PURE__ */ jsx(List, { start: start === 1 ? void 0 : start, children: items.map((item, index) => /* @__PURE__ */ jsx("li", { children: item.children }, index)) });
  },
  Separator: () => {
    return /* @__PURE__ */ jsx("hr", {});
  }
};
const Markdown = forwardRef(
  ({ content, partial, components, asChild, ...props }, forwardedRef) => {
    const Component = asChild ? Slot : "div";
    const tokens = useMemo(() => {
      if (!content) {
        return [];
      }
      return partial ? tokenizePartial(content) : tokenize(content);
    }, [content, partial]);
    return /* @__PURE__ */ jsx(Component, { ...props, ref: forwardedRef, children: tokens.map((token, index) => {
      return /* @__PURE__ */ jsx(
        MemoizedMarkdownToken,
        {
          token,
          components,
          partial
        },
        index
      );
    }) });
  }
);
const MemoizedMarkdownToken = memo(
  ({
    token,
    components
  }) => {
    return /* @__PURE__ */ jsx(MarkdownToken, { token, components });
  },
  (previousProps, nextProps) => {
    const previousToken = previousProps.token;
    const nextToken = nextProps.token;
    if (previousToken.type !== nextToken.type || previousProps.partial !== nextProps.partial) {
      return false;
    }
    let previousContent = previousToken.raw;
    let nextContent = nextToken.raw;
    if ("text" in previousToken && "text" in nextToken) {
      previousContent = previousToken.text;
      nextContent = nextToken.text;
    }
    if (previousContent.length !== nextContent.length) {
      return false;
    }
    return previousContent === nextContent;
  }
);
function MarkdownToken({
  token,
  components
}) {
  switch (token.type) {
    case "escape": {
      return token.text;
    }
    case "space": {
      return null;
    }
    case "text": {
      if (token.tokens !== void 0) {
        return /* @__PURE__ */ jsx(MarkdownTokens, { tokens: token.tokens, components });
      } else {
        return parseHtmlEntities(token.text);
      }
    }
    case "br": {
      return /* @__PURE__ */ jsx("br", {});
    }
    case "paragraph": {
      const Paragraph = components?.Paragraph ?? defaultComponents.Paragraph;
      return /* @__PURE__ */ jsx(Paragraph, { children: /* @__PURE__ */ jsx(MarkdownTokens, { tokens: token.tokens, components }) });
    }
    case "heading": {
      const Heading = components?.Heading ?? defaultComponents.Heading;
      return /* @__PURE__ */ jsx(Heading, { level: clampHeadingLevel(token.depth), children: /* @__PURE__ */ jsx(MarkdownTokens, { tokens: token.tokens, components }) });
    }
    case "strong": {
      const Inline = components?.Inline ?? defaultComponents.Inline;
      return /* @__PURE__ */ jsx(Inline, { type: "strong", children: /* @__PURE__ */ jsx(MarkdownTokens, { tokens: token.tokens, components }) });
    }
    case "em": {
      const Inline = components?.Inline ?? defaultComponents.Inline;
      return /* @__PURE__ */ jsx(Inline, { type: "em", children: /* @__PURE__ */ jsx(MarkdownTokens, { tokens: token.tokens, components }) });
    }
    case "codespan": {
      const Inline = components?.Inline ?? defaultComponents.Inline;
      return /* @__PURE__ */ jsx(Inline, { type: "code", children: parseHtmlEntities(token.text) });
    }
    case "del": {
      const Inline = components?.Inline ?? defaultComponents.Inline;
      return /* @__PURE__ */ jsx(Inline, { type: "del", children: /* @__PURE__ */ jsx(MarkdownTokens, { tokens: token.tokens, components }) });
    }
    case "link": {
      const href = sanitizeUrl(token.href);
      if (href === null) {
        return /* @__PURE__ */ jsx(MarkdownTokens, { tokens: token.tokens, components });
      }
      const Link = components?.Link ?? defaultComponents.Link;
      return /* @__PURE__ */ jsx(Link, { href, title: token.title ?? void 0, children: /* @__PURE__ */ jsx(MarkdownTokens, { tokens: token.tokens, components }) });
    }
    case "code": {
      let language = void 0;
      if (token.lang !== void 0) {
        language = token.lang.match(TRAILING_NON_WHITESPACE_REGEX)?.[0] ?? void 0;
      }
      const CodeBlock = components?.CodeBlock ?? defaultComponents.CodeBlock;
      return /* @__PURE__ */ jsx(CodeBlock, { language, code: token.text || " " });
    }
    case "blockquote": {
      const Blockquote = components?.Blockquote ?? defaultComponents.Blockquote;
      return /* @__PURE__ */ jsx(Blockquote, { children: /* @__PURE__ */ jsx(
        MarkdownTokens,
        {
          tokens: token.tokens,
          components,
          normalizeToBlockTokens: true
        }
      ) });
    }
    case "list": {
      const List = components?.List ?? defaultComponents.List;
      const items = token.items.map((item) => {
        let tokens = item.tokens;
        if (item.task) {
          tokens = [
            {
              type: "checkbox",
              checked: Boolean(item.checked),
              raw: `[${item.checked ? "x" : " "}]`
            },
            ...tokens
          ];
        }
        return {
          checked: item.task ? item.checked : void 0,
          children: /* @__PURE__ */ jsx(
            MarkdownTokens,
            {
              tokens,
              components,
              normalizeToBlockTokens: (
                // A non-loose list item doesn't need to be wrapped in block tokens.
                item.tokens.length > 0 ? item.loose : false
              )
            }
          )
        };
      });
      const props = token.ordered ? { type: "ordered", items, start: token.start || 1 } : { type: "unordered", items };
      return /* @__PURE__ */ jsx(List, { ...props });
    }
    case "checkbox": {
      return /* @__PURE__ */ jsxs(Fragment, { children: [
        /* @__PURE__ */ jsx("input", { type: "checkbox", disabled: true, checked: token.checked }),
        " "
      ] });
    }
    case "table": {
      const Table = components?.Table ?? defaultComponents.Table;
      const headings = token.header.map(
        (cell) => ({
          align: cell.align ?? void 0,
          children: /* @__PURE__ */ jsx(MarkdownTokens, { tokens: cell.tokens, components })
        })
      );
      const rows = token.rows.map(
        (row) => row.map((cell) => ({
          align: cell.align ?? void 0,
          children: /* @__PURE__ */ jsx(MarkdownTokens, { tokens: cell.tokens, components })
        }))
      );
      return /* @__PURE__ */ jsx(Table, { headings, rows });
    }
    case "image": {
      const href = sanitizeUrl(token.href);
      if (href === null) {
        return token.text;
      }
      const Image = components?.Image ?? defaultComponents.Image;
      return /* @__PURE__ */ jsx(Image, { src: href, alt: token.text, title: token.title ?? void 0 });
    }
    case "hr": {
      const Separator = components?.Separator ?? defaultComponents.Separator;
      return /* @__PURE__ */ jsx(Separator, {});
    }
    case "html": {
      return parseHtmlEntities(token.text);
    }
    default: {
      return null;
    }
  }
}
function MarkdownTokens({
  tokens,
  components,
  normalizeToBlockTokens = false
}) {
  assertTokens(tokens);
  let normalizedTokens = [];
  if (normalizeToBlockTokens) {
    let leadingCheckboxToken = tokens[0]?.type === "checkbox" ? tokens[0] : null;
    for (let i = 0; i < tokens.length; i++) {
      const token = tokens[i];
      switch (token.type) {
        case "text": {
          const paragraphTextTokens = [token];
          while (i + 1 < tokens.length && tokens[i + 1].type === "text") {
            i++;
            paragraphTextTokens.push(tokens[i]);
          }
          const paragraphRaw = paragraphTextTokens.map((text) => text.raw).join("");
          const paragraphText = paragraphTextTokens.map((text) => text.text).join("");
          normalizedTokens.push({
            type: "paragraph",
            tokens: leadingCheckboxToken ? [leadingCheckboxToken, ...paragraphTextTokens] : paragraphTextTokens,
            raw: paragraphRaw,
            text: paragraphText
          });
          leadingCheckboxToken = null;
          break;
        }
        case "checkbox":
          break;
        default: {
          normalizedTokens.push(token);
        }
      }
    }
  } else {
    normalizedTokens = tokens;
  }
  return normalizedTokens.map((token, index) => /* @__PURE__ */ jsx(MarkdownToken, { token, components }, index));
}
function assertTokens(_) {
}
function isBlockToken(token) {
  return token.type === "paragraph" || token.type === "heading" || token.type === "blockquote" || token.type === "list_item";
}
function tokenize(markdown) {
  return new Lexer().lex(markdown);
}
function tokenizePartial(markdown) {
  const preprocessedContent = trimPartialMarkdown(normalizeNewlines(markdown));
  const tokens = tokenize(preprocessedContent);
  try {
    return completePartialTokens(tokens);
  } catch {
    return tokens;
  }
}
function findPotentiallyPartialToken(tokens, parentToken) {
  if (tokens.length === 0) {
    return parentToken;
  }
  assertTokens(tokens);
  const lastIndex = tokens.length - 1;
  let lastToken = tokens[lastIndex];
  if (lastToken.type === "space") {
    const penultimateToken = tokens[lastIndex - 1];
    if (!penultimateToken) {
      return parentToken;
    }
    lastToken = penultimateToken;
  }
  if (lastToken.type === "list") {
    const listToken = lastToken;
    const lastListItem = listToken.items[listToken.items.length - 1];
    if (!lastListItem) {
      return parentToken;
    }
    const lastListItemTokens = lastListItem.tokens;
    if (lastListItemTokens.some((token) => token.type === "space") && lastListItemTokens.length > 0) {
      const lastListItemLastToken = lastListItemTokens[lastListItemTokens.length - 1];
      if (lastListItemLastToken) {
        if (lastListItemLastToken.type === "text") {
          return lastListItemLastToken;
        }
        if (isBlockToken(lastListItemLastToken)) {
          return findPotentiallyPartialToken(
            lastListItemLastToken.tokens,
            lastListItemLastToken
          );
        }
        return void 0;
      }
    }
    return findPotentiallyPartialToken(lastListItem.tokens, lastListItem);
  }
  if (lastToken.type === "table") {
    const tableToken = lastToken;
    const lastTableRow = tableToken.rows[tableToken.rows.length - 1];
    if (!lastTableRow) {
      return parentToken;
    }
    const firstEmptyTableCellIndex = lastTableRow.findIndex(
      (cell) => cell.tokens.length === 0
    );
    const lastNonEmptyTableCell = firstEmptyTableCellIndex === -1 ? void 0 : firstEmptyTableCellIndex === 0 ? lastTableRow[firstEmptyTableCellIndex] : lastTableRow[firstEmptyTableCellIndex - 1];
    if (!lastNonEmptyTableCell) {
      return parentToken;
    }
    return findPotentiallyPartialToken(
      lastNonEmptyTableCell.tokens,
      lastNonEmptyTableCell
    );
  }
  if (isBlockToken(lastToken)) {
    return findPotentiallyPartialToken(lastToken.tokens, lastToken);
  }
  return parentToken;
}
function normalizeNewlines(string) {
  return string.replace(NEWLINE_REGEX, "\n");
}
function trimPartialMarkdown(markdown) {
  const lines = markdown.split("\n");
  if (lines.length === 0) {
    return markdown;
  }
  const [singleCharacterMatch] = lines[lines.length - 1].match(SINGLE_CHARACTER_REGEX) ?? [];
  if (singleCharacterMatch) {
    lines[lines.length - 1] = lines[lines.length - 1].slice(
      0,
      -singleCharacterMatch.length
    );
    return lines.join("\n");
  }
  const [bufferedCharactersMatch] = lines[lines.length - 1].match(BUFFERED_CHARACTERS_REGEX) ?? [];
  if (bufferedCharactersMatch) {
    lines[lines.length - 1] = lines[lines.length - 1].slice(
      0,
      -bufferedCharactersMatch.length
    );
    return lines.join("\n");
  }
  return markdown;
}
function completePartialInlineMarkdown(markdown, options = {}) {
  const stack = [];
  const allowLinksImages = options.allowLinksImages ?? true;
  let completedMarkdown = markdown;
  const partialEmojiMatch = completedMarkdown.match(PARTIAL_EMOJI_REGEX);
  if (partialEmojiMatch) {
    const partialEmoji = partialEmojiMatch[0];
    completedMarkdown = completedMarkdown.slice(0, -partialEmoji.length);
    if (partialEmoji.includes("\uFE0F") || partialEmoji.includes("\u20E3")) {
      const codepoints = Array.from(completedMarkdown);
      if (codepoints.length > 0) {
        completedMarkdown = codepoints.slice(0, -1).join("");
      }
    }
  }
  for (let i = 0; i < completedMarkdown.length; i++) {
    const character = completedMarkdown[i];
    const isEscaped = i > 0 ? completedMarkdown[i - 1] === "\\" : false;
    if (isEscaped) {
      continue;
    }
    if (character === "`") {
      const lastDelimiter = stack[stack.length - 1];
      const isClosingPreviousDelimiter = lastDelimiter?.string === "`" && i > lastDelimiter.index;
      if (isClosingPreviousDelimiter) {
        stack.pop();
      } else {
        const characterAfterDelimiter = completedMarkdown[i + 1];
        if (characterAfterDelimiter && !WHITESPACE_REGEX.test(characterAfterDelimiter)) {
          stack.push({ string: "`", length: 1, index: i });
        }
      }
      continue;
    }
    if (character === "*" || character === "_" || character === "~") {
      const isInsideInlineCode = stack[stack.length - 1]?.string === "`";
      let j = i;
      while (j < completedMarkdown.length && completedMarkdown[j] === character) {
        j++;
      }
      const consecutiveDelimiterCharacters = j - i;
      if (isInsideInlineCode) {
        i += consecutiveDelimiterCharacters - 1;
        continue;
      }
      let remainingConsecutiveDelimiterCharacters = consecutiveDelimiterCharacters;
      let consecutiveDelimiterCharacterIndex = 0;
      while (remainingConsecutiveDelimiterCharacters > 0) {
        const lastDelimiter = stack[stack.length - 1];
        if (!lastDelimiter || lastDelimiter.string[0] !== character) {
          break;
        }
        if (remainingConsecutiveDelimiterCharacters >= lastDelimiter.length) {
          stack.pop();
          remainingConsecutiveDelimiterCharacters -= lastDelimiter.length;
          consecutiveDelimiterCharacterIndex += lastDelimiter.length;
          continue;
        }
        break;
      }
      if (remainingConsecutiveDelimiterCharacters > 0) {
        if (i + consecutiveDelimiterCharacters >= completedMarkdown.length) {
          completedMarkdown = completedMarkdown.slice(
            0,
            completedMarkdown.length - remainingConsecutiveDelimiterCharacters
          );
          break;
        }
        const characterAfterDelimiters = completedMarkdown[i + consecutiveDelimiterCharacters];
        if (characterAfterDelimiters && !WHITESPACE_REGEX.test(characterAfterDelimiters)) {
          let delimiterStartIndex = i + consecutiveDelimiterCharacterIndex;
          if (remainingConsecutiveDelimiterCharacters % 2 === 1) {
            stack.push({
              string: character,
              length: 1,
              index: delimiterStartIndex
            });
            delimiterStartIndex += 1;
            remainingConsecutiveDelimiterCharacters -= 1;
          }
          while (remainingConsecutiveDelimiterCharacters >= 2) {
            stack.push({
              string: character + character,
              length: 2,
              index: delimiterStartIndex
            });
            delimiterStartIndex += 2;
            remainingConsecutiveDelimiterCharacters -= 2;
          }
        }
      }
      i += consecutiveDelimiterCharacters - 1;
      continue;
    }
  }
  if (allowLinksImages) {
    const partialLinkImageMatch = completedMarkdown.match(
      PARTIAL_LINK_IMAGE_REGEX
    );
    if (partialLinkImageMatch) {
      const linkImageStartIndex = partialLinkImageMatch.index;
      const linkImageEndIndex = linkImageStartIndex + partialLinkImageMatch[0].length;
      const isInsideInlineCode = stack.some(
        (delimiter) => delimiter.string === "`" && delimiter.index < linkImageStartIndex
      );
      if (!isInsideInlineCode) {
        const partialLinkImageContent = partialLinkImageMatch[0];
        const {
          text: partialLinkText,
          url: partialLinkUrl,
          image: isImage
        } = partialLinkImageMatch.groups;
        if (isImage) {
          completedMarkdown = completedMarkdown.slice(
            0,
            -partialLinkImageContent.length
          );
        } else {
          for (let i = stack.length - 1; i >= 0; i--) {
            const delimiter = stack[i];
            if (delimiter.index >= linkImageStartIndex && delimiter.index < linkImageEndIndex) {
              stack.splice(i, 1);
            }
          }
          const completedLinkText = partialLinkText ? partialLinkUrl ? (
            // If there's a partial URL, the text is already completed.
            partialLinkText
          ) : (
            // Otherwise, we complete the text and its potential nested elements.
            completePartialInlineMarkdown(partialLinkText, {
              // Links/images cannot be nested.
              allowLinksImages: false
            })
          ) : "";
          const completedLinkUrl = partialLinkUrl && !WHITESPACE_REGEX.test(partialLinkUrl) && isUrl(partialLinkUrl) ? (
            // We only use the partial URL if it's valid.
            partialLinkUrl
          ) : DEFAULT_PARTIAL_LINK_URL;
          const completedLink = `[${completedLinkText}](${completedLinkUrl})`;
          completedMarkdown = completedMarkdown.slice(
            0,
            -partialLinkImageContent.length
          );
          completedMarkdown += completedLink;
        }
      }
    }
  }
  for (let i = stack.length - 1; i >= 0; i--) {
    const delimiter = stack[i];
    if (delimiter.index + delimiter.length >= completedMarkdown.length) {
      completedMarkdown = completedMarkdown.slice(0, delimiter.index);
      continue;
    }
    if (delimiter.string !== "`") {
      completedMarkdown = completedMarkdown.trimEnd();
    }
    completedMarkdown += delimiter.string;
  }
  return completedMarkdown;
}
function completePartialTableMarkdown(markdown) {
  const tableLines = markdown.split("\n");
  if (tableLines.length === 0) {
    return void 0;
  }
  const tableHeader = tableLines[0];
  if (tableHeader === "|") {
    return void 0;
  }
  const tableHeadings = tableHeader.split("|").map((cell) => cell.trim()).filter((cell) => cell !== "");
  if (tableHeadings.length === 0) {
    return void 0;
  }
  if (!tableHeader.endsWith("|")) {
    const lastTableHeading = tableHeadings[tableHeadings.length - 1];
    const completedLastTableHeading = completePartialInlineMarkdown(lastTableHeading);
    tableHeadings[tableHeadings.length - 1] = completedLastTableHeading;
  }
  return `| ${tableHeadings.join(" | ")} |
| ${tableHeadings.map(() => "---").join(" | ")} |`;
}
function completePartialTokens(tokens) {
  const potentiallyPartialToken = findPotentiallyPartialToken(tokens);
  if (!potentiallyPartialToken) {
    return tokens;
  }
  if (potentiallyPartialToken.type === "paragraph" || potentiallyPartialToken.type === "text") {
    if (PARTIAL_TABLE_HEADER_REGEX.test(potentiallyPartialToken.raw)) {
      const completedTableMarkdown = completePartialTableMarkdown(
        potentiallyPartialToken.raw
      );
      if (completedTableMarkdown) {
        const completedTable = tokenize(completedTableMarkdown)[0];
        if (completedTable) {
          const table = potentiallyPartialToken;
          table.type = "table";
          table.header = completedTable.header;
          table.align = completedTable.align;
          table.rows = completedTable.rows;
          return tokens;
        }
      } else {
        potentiallyPartialToken.text = "";
        potentiallyPartialToken.tokens = [];
      }
    }
  }
  if (potentiallyPartialToken.type === "list_item") {
    const listItem = potentiallyPartialToken;
    const listItemTokens = listItem.tokens;
    if (!listItem.task && listItemTokens.length === 1 && listItemTokens[0].type === "text") {
      const listItemText = listItemTokens[0];
      const checkboxMatch = listItemText.text.match(LIST_ITEM_CHECKBOX_REGEX);
      if (checkboxMatch) {
        listItem.task = true;
        if (checkboxMatch[1] === "x") {
          listItem.checked = true;
        } else {
          listItem.checked = false;
        }
        listItem.text = "";
        listItem.tokens = [];
      }
    }
  }
  if (potentiallyPartialToken.text.length === 0) {
    return tokens;
  }
  const completedMarkdown = completePartialInlineMarkdown(
    potentiallyPartialToken.text
  );
  const completedMarkdownTokens = tokenize(completedMarkdown)[0]?.tokens ?? [];
  potentiallyPartialToken.text = completedMarkdown;
  potentiallyPartialToken.tokens = completedMarkdownTokens;
  return tokens;
}
function parseHtmlEntities(input) {
  const document = new DOMParser().parseFromString(
    `<!doctype html><body>${input.replace(AMPERSAND_REGEX, "&amp;").replace(LEFT_ANGLE_BRACKET_REGEX, "&lt;").replace(RIGHT_ANGLE_BRACKET_REGEX, "&gt;")}`,
    "text/html"
  );
  return document.body.textContent;
}
function clampHeadingLevel(level) {
  return Math.max(1, Math.min(6, level));
}

export { Markdown, MarkdownToken };
//# sourceMappingURL=Markdown.js.map