@lobehub/ui/es/Markdown/index.js

Lobe UI is an open-source UI component library for building AIGC web apps

'use client';

function _typeof(o) { "@babel/helpers - typeof"; return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (o) { return typeof o; } : function (o) { return o && "function" == typeof Symbol && o.constructor === Symbol && o !== Symbol.prototype ? "symbol" : typeof o; }, _typeof(o); }
var _excluded = ["children", "className", "style", "fullFeaturedCodeBlock", "onDoubleClick", "enableLatex", "enableMermaid", "enableImageGallery", "enableCustomFootnotes", "componentProps", "allowHtml", "fontSize", "headerMultiple", "marginMultiple", "showFootnotes", "variant", "lineHeight", "rehypePlugins", "remarkPlugins", "remarkPluginsAhead", "components", "customRender", "citations"];
function ownKeys(e, r) { var t = Object.keys(e); if (Object.getOwnPropertySymbols) { var o = Object.getOwnPropertySymbols(e); r && (o = o.filter(function (r) { return Object.getOwnPropertyDescriptor(e, r).enumerable; })), t.push.apply(t, o); } return t; }
function _objectSpread(e) { for (var r = 1; r < arguments.length; r++) { var t = null != arguments[r] ? arguments[r] : {}; r % 2 ? ownKeys(Object(t), !0).forEach(function (r) { _defineProperty(e, r, t[r]); }) : Object.getOwnPropertyDescriptors ? Object.defineProperties(e, Object.getOwnPropertyDescriptors(t)) : ownKeys(Object(t)).forEach(function (r) { Object.defineProperty(e, r, Object.getOwnPropertyDescriptor(t, r)); }); } return e; }
function _defineProperty(obj, key, value) { key = _toPropertyKey(key); if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }
function _toPropertyKey(t) { var i = _toPrimitive(t, "string"); return "symbol" == _typeof(i) ? i : String(i); }
function _toPrimitive(t, r) { if ("object" != _typeof(t) || !t) return t; var e = t[Symbol.toPrimitive]; if (void 0 !== e) { var i = e.call(t, r || "default"); if ("object" != _typeof(i)) return i; throw new TypeError("@@toPrimitive must return a primitive value."); } return ("string" === r ? String : Number)(t); }
function _objectWithoutProperties(source, excluded) { if (source == null) return {}; var target = _objectWithoutPropertiesLoose(source, excluded); var key, i; if (Object.getOwnPropertySymbols) { var sourceSymbolKeys = Object.getOwnPropertySymbols(source); for (i = 0; i < sourceSymbolKeys.length; i++) { key = sourceSymbolKeys[i]; if (excluded.indexOf(key) >= 0) continue; if (!Object.prototype.propertyIsEnumerable.call(source, key)) continue; target[key] = source[key]; } } return target; }
function _objectWithoutPropertiesLoose(source, excluded) { if (source == null) return {}; var target = {}; var sourceKeys = Object.keys(source); var key, i; for (i = 0; i < sourceKeys.length; i++) { key = sourceKeys[i]; if (excluded.indexOf(key) >= 0) continue; target[key] = source[key]; } return target; }
function _toConsumableArray(arr) { return _arrayWithoutHoles(arr) || _iterableToArray(arr) || _unsupportedIterableToArray(arr) || _nonIterableSpread(); }
function _nonIterableSpread() { throw new TypeError("Invalid attempt to spread non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }
function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }
function _iterableToArray(iter) { if (typeof Symbol !== "undefined" && iter[Symbol.iterator] != null || iter["@@iterator"] != null) return Array.from(iter); }
function _arrayWithoutHoles(arr) { if (Array.isArray(arr)) return _arrayLikeToArray(arr); }
function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) arr2[i] = arr[i]; return arr2; }
import { memo, useCallback, useMemo } from 'react';
import ReactMarkdown from 'react-markdown';
import rehypeKatex from 'rehype-katex';
import rehypeRaw from 'rehype-raw';
import remarkBreaks from 'remark-breaks';
import remarkGfm from 'remark-gfm';
import remarkMath from 'remark-math';
import ImageGallery from "../Image/ImageGallery";
import Image from "../mdx/mdxComponents/Image";
import Link from "../mdx/mdxComponents/Link";
import Section from "../mdx/mdxComponents/Section";
import Video from "../mdx/mdxComponents/Video";
import { CodeFullFeatured, CodeLite } from "./CodeBlock";
import Typography from "./Typography";
import { rehypeFootnoteLinks, remarkCustomFootnotes } from "./plugins/footnote";
import { rehypeKatexDir } from "./plugins/katexDir";
import { useStyles } from "./style";
import { escapeBrackets, escapeMhchem, fixMarkdownBold, transformCitations } from "./utils";

// 使用普通 Map 代替 WeakMap，并限制缓存大小
import { jsx as _jsx } from "react/jsx-runtime";
var CACHE_SIZE = 50;
var contentCache = new Map();

// 添加内容到缓存时，保持缓存大小不超过限制
var addToCache = function addToCache(key, value) {
  if (contentCache.size >= CACHE_SIZE) {
    // 移除最早加入的缓存项
    var firstKey = contentCache.keys().next().value;
    if (firstKey) contentCache.delete(firstKey);
  }
  contentCache.set(key, value);
};
// 使用工厂函数处理插件，减少组件中的逻辑负担
var createPlugins = function createPlugins(props) {
  var allowHtml = props.allowHtml,
    enableLatex = props.enableLatex,
    enableCustomFootnotes = props.enableCustomFootnotes,
    isChatMode = props.isChatMode,
    rehypePlugins = props.rehypePlugins,
    remarkPlugins = props.remarkPlugins,
    remarkPluginsAhead = props.remarkPluginsAhead;

  // 预处理插件数组
  var normalizedRehypePlugins = Array.isArray(rehypePlugins) ? rehypePlugins : rehypePlugins ? [rehypePlugins] : [];
  var normalizedRemarkPlugins = Array.isArray(remarkPlugins) ? remarkPlugins : remarkPlugins ? [remarkPlugins] : [];
  var normalizedRemarkPluginsAhead = Array.isArray(remarkPluginsAhead) ? remarkPluginsAhead : remarkPluginsAhead ? [remarkPluginsAhead] : [];

  // 创建 rehype 插件列表
  var rehypePluginsList = [allowHtml && rehypeRaw, enableLatex && rehypeKatex, enableLatex && rehypeKatexDir, enableCustomFootnotes && rehypeFootnoteLinks].concat(_toConsumableArray(normalizedRehypePlugins)).filter(Boolean);

  // 创建 remark 插件列表
  var remarkPluginsList = [].concat(_toConsumableArray(normalizedRemarkPluginsAhead), [[remarkGfm, {
    singleTilde: false
  }], enableCustomFootnotes && remarkCustomFootnotes, enableLatex && remarkMath, isChatMode && remarkBreaks], _toConsumableArray(normalizedRemarkPlugins)).filter(Boolean);
  return {
    rehypePluginsList: rehypePluginsList,
    remarkPluginsList: remarkPluginsList
  };
};
var Markdown = /*#__PURE__*/memo(function (_ref) {
  var children = _ref.children,
    className = _ref.className,
    style = _ref.style,
    fullFeaturedCodeBlock = _ref.fullFeaturedCodeBlock,
    onDoubleClick = _ref.onDoubleClick,
    _ref$enableLatex = _ref.enableLatex,
    enableLatex = _ref$enableLatex === void 0 ? true : _ref$enableLatex,
    _ref$enableMermaid = _ref.enableMermaid,
    enableMermaid = _ref$enableMermaid === void 0 ? true : _ref$enableMermaid,
    _ref$enableImageGalle = _ref.enableImageGallery,
    enableImageGallery = _ref$enableImageGalle === void 0 ? true : _ref$enableImageGalle,
    enableCustomFootnotes = _ref.enableCustomFootnotes,
    componentProps = _ref.componentProps,
    allowHtml = _ref.allowHtml,
    _ref$fontSize = _ref.fontSize,
    fontSize = _ref$fontSize === void 0 ? 14 : _ref$fontSize,
    _ref$headerMultiple = _ref.headerMultiple,
    headerMultiple = _ref$headerMultiple === void 0 ? 0.25 : _ref$headerMultiple,
    _ref$marginMultiple = _ref.marginMultiple,
    marginMultiple = _ref$marginMultiple === void 0 ? 1 : _ref$marginMultiple,
    showFootnotes = _ref.showFootnotes,
    _ref$variant = _ref.variant,
    variant = _ref$variant === void 0 ? 'normal' : _ref$variant,
    _ref$lineHeight = _ref.lineHeight,
    lineHeight = _ref$lineHeight === void 0 ? 1.6 : _ref$lineHeight,
    rehypePlugins = _ref.rehypePlugins,
    remarkPlugins = _ref.remarkPlugins,
    remarkPluginsAhead = _ref.remarkPluginsAhead,
    _ref$components = _ref.components,
    components = _ref$components === void 0 ? {} : _ref$components,
    customRender = _ref.customRender,
    citations = _ref.citations,
    rest = _objectWithoutProperties(_ref, _excluded);
  var _useStyles = useStyles(),
    cx = _useStyles.cx,
    styles = _useStyles.styles;
  var isChatMode = variant === 'chat';

  // 计算缓存键
  var cacheKey = useMemo(function () {
    return "".concat(children, "-").concat(enableLatex, "-").concat(enableCustomFootnotes, "-").concat((citations === null || citations === void 0 ? void 0 : citations.length) || 0);
  }, [children, enableLatex, enableCustomFootnotes, citations === null || citations === void 0 ? void 0 : citations.length]);

  // 处理内容并利用缓存避免重复计算
  var escapedContent = useMemo(function () {
    // 尝试从缓存获取
    if (contentCache.has(cacheKey)) {
      return contentCache.get(cacheKey);
    }

    // 处理新内容
    var processedContent;
    if (enableLatex) {
      var baseContent = fixMarkdownBold(escapeMhchem(escapeBrackets(children)));
      processedContent = enableCustomFootnotes ? transformCitations(baseContent, citations === null || citations === void 0 ? void 0 : citations.length) : baseContent;
    } else {
      processedContent = fixMarkdownBold(children);
    }

    // 缓存处理结果
    addToCache(cacheKey, processedContent);
    return processedContent;
  }, [cacheKey, children, enableLatex, enableCustomFootnotes, citations === null || citations === void 0 ? void 0 : citations.length]);

  // 创建插件
  var _useMemo = useMemo(function () {
      return createPlugins({
        allowHtml: allowHtml,
        enableCustomFootnotes: enableCustomFootnotes,
        enableLatex: enableLatex,
        isChatMode: isChatMode,
        rehypePlugins: rehypePlugins,
        remarkPlugins: remarkPlugins,
        remarkPluginsAhead: remarkPluginsAhead
      });
    }, [allowHtml, enableLatex, enableCustomFootnotes, isChatMode, rehypePlugins, remarkPlugins, remarkPluginsAhead]),
    rehypePluginsList = _useMemo.rehypePluginsList,
    remarkPluginsList = _useMemo.remarkPluginsList;

  // 使用 useCallback 优化渲染子组件
  var renderLink = useCallback(function (props) {
    return /*#__PURE__*/_jsx(Link, _objectSpread(_objectSpread({
      citations: citations
    }, props), componentProps === null || componentProps === void 0 ? void 0 : componentProps.a));
  }, [citations, componentProps === null || componentProps === void 0 ? void 0 : componentProps.a]);
  var renderImage = useCallback(function (props) {
    var _componentProps$img, _componentProps$img2;
    return /*#__PURE__*/_jsx(Image, _objectSpread(_objectSpread(_objectSpread({}, props), componentProps === null || componentProps === void 0 ? void 0 : componentProps.img), {}, {
      style: isChatMode ? _objectSpread({
        height: 'auto',
        maxWidth: 640
      }, componentProps === null || componentProps === void 0 || (_componentProps$img = componentProps.img) === null || _componentProps$img === void 0 ? void 0 : _componentProps$img.style) : componentProps === null || componentProps === void 0 || (_componentProps$img2 = componentProps.img) === null || _componentProps$img2 === void 0 ? void 0 : _componentProps$img2.style
    }));
  }, [isChatMode, componentProps === null || componentProps === void 0 ? void 0 : componentProps.img]);
  var renderCodeBlock = useCallback(function (props) {
    return fullFeaturedCodeBlock ? /*#__PURE__*/_jsx(CodeFullFeatured, _objectSpread(_objectSpread({
      enableMermaid: enableMermaid,
      highlight: componentProps === null || componentProps === void 0 ? void 0 : componentProps.highlight,
      mermaid: componentProps === null || componentProps === void 0 ? void 0 : componentProps.mermaid
    }, props), componentProps === null || componentProps === void 0 ? void 0 : componentProps.pre)) : /*#__PURE__*/_jsx(CodeLite, _objectSpread(_objectSpread({
      enableMermaid: enableMermaid,
      highlight: componentProps === null || componentProps === void 0 ? void 0 : componentProps.highlight,
      mermaid: componentProps === null || componentProps === void 0 ? void 0 : componentProps.mermaid
    }, props), componentProps === null || componentProps === void 0 ? void 0 : componentProps.pre));
  }, [enableMermaid, fullFeaturedCodeBlock, componentProps === null || componentProps === void 0 ? void 0 : componentProps.highlight, componentProps === null || componentProps === void 0 ? void 0 : componentProps.mermaid, componentProps === null || componentProps === void 0 ? void 0 : componentProps.pre]);
  var renderSection = useCallback(function (props) {
    return /*#__PURE__*/_jsx(Section, _objectSpread({
      showCitations: showFootnotes
    }, props));
  }, [showFootnotes]);
  var renderVideo = useCallback(function (props) {
    return /*#__PURE__*/_jsx(Video, _objectSpread(_objectSpread({}, props), componentProps === null || componentProps === void 0 ? void 0 : componentProps.video));
  }, [componentProps === null || componentProps === void 0 ? void 0 : componentProps.video]);

  // 创建组件映射
  var memoComponents = useMemo(function () {
    return _objectSpread({
      a: renderLink,
      img: enableImageGallery ? renderImage : undefined,
      pre: renderCodeBlock,
      section: renderSection,
      video: renderVideo
    }, components);
  }, [renderLink, renderImage, renderCodeBlock, renderSection, renderVideo, enableImageGallery, components]);

  // 渲染默认内容
  var defaultDOM = useMemo(function () {
    return /*#__PURE__*/_jsx(ImageGallery, {
      enable: enableImageGallery,
      children: /*#__PURE__*/_jsx(ReactMarkdown, {
        components: memoComponents,
        rehypePlugins: rehypePluginsList,
        remarkPlugins: remarkPluginsList,
        children: escapedContent
      })
    });
  }, [escapedContent, memoComponents, rehypePluginsList, remarkPluginsList, enableImageGallery]);

  // 应用自定义渲染
  var markdownContent = customRender ? customRender(defaultDOM, {
    text: escapedContent || ''
  }) : defaultDOM;
  return /*#__PURE__*/_jsx(Typography, _objectSpread(_objectSpread({
    className: cx(styles.root, enableLatex && styles.latex, isChatMode && styles.chat, className),
    "data-code-type": "markdown",
    fontSize: fontSize,
    headerMultiple: headerMultiple,
    lineHeight: lineHeight,
    marginMultiple: marginMultiple,
    onDoubleClick: onDoubleClick,
    style: style
  }, rest), {}, {
    children: markdownContent
  }));
});
export default Markdown;