@lobehub/editor/es/plugins/codemirror-block/lib/index.js

A powerful and extensible rich text editor built on Meta's Lexical framework, providing a modern editing experience with React integration.

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import { createDebugLogger } from "../../../utils/debug";
var logger = createDebugLogger('plugin', 'codemirror-loader');

// CDN URL 配置
var DEFAULT_CDN_URL = 'https://registry.npmmirror.com/@lobehub/codemirror/1.0.0/files/es/index.js';
var LOAD_TIMEOUT = 10000; // 10 秒超时
var POLL_INTERVAL = 50; // 50ms 轮询间隔

export var AllLang = [];
// 使用 Promise 缓存避免并发重复加载
var codeMirrorPromise = null;

/**
 * 加载 script 标签
 */
function loadScript(src) {
  return new Promise(function (resolve, reject) {
    // 检查是否已经加载过相同的脚本
    var existingScript = document.querySelector("script[src=\"".concat(src, "\"]"));
    if (existingScript) {
      logger.debug('Script already loaded:', src);
      resolve();
      return;
    }
    logger.debug('Loading script:', src);
    var script = document.createElement('script');
    script.src = src;
    script.type = 'module';
    script.async = true;
    script.addEventListener('load', function () {
      logger.debug('Script loaded successfully:', src);
      resolve();
    });
    script.addEventListener('error', function (error) {
      logger.error('Failed to load script:', src, error);
      reject(new Error("Failed to load script: ".concat(src)));
    });
    document.head.append(script);
  });
}

/**
 * 等待 window.CodeMirror 可用
 */
function waitForCodeMirror() {
  var timeout = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : LOAD_TIMEOUT;
  return new Promise(function (resolve, reject) {
    var startTime = Date.now();
    var checkCodeMirror = function checkCodeMirror() {
      // @ts-expect-error not error
      if (window.CodeMirror) {
        logger.debug('CodeMirror is ready');
        resolve();
        return;
      }
      if (Date.now() - startTime > timeout) {
        logger.error('Timeout waiting for CodeMirror');
        reject(new Error('Timeout: CodeMirror failed to load from CDN'));
        return;
      }
      setTimeout(checkCodeMirror, POLL_INTERVAL);
    };
    checkCodeMirror();
  });
}

/**
 * 从 CDN 加载 CodeMirror
 * @param cdnUrl - 可选的自定义 CDN URL
 */
export function loadCodeMirror() {
  return _loadCodeMirror.apply(this, arguments);
}
function _loadCodeMirror() {
  _loadCodeMirror = _asyncToGenerator( /*#__PURE__*/_regeneratorRuntime().mark(function _callee2() {
    var _window$CodeMirror;
    var cdnUrl,
      _args2 = arguments;
    return _regeneratorRuntime().wrap(function _callee2$(_context2) {
      while (1) switch (_context2.prev = _context2.next) {
        case 0:
          cdnUrl = _args2.length > 0 && _args2[0] !== undefined ? _args2[0] : DEFAULT_CDN_URL;
          if (!((_window$CodeMirror = window.CodeMirror) !== null && _window$CodeMirror !== void 0 && _window$CodeMirror.default)) {
            _context2.next = 4;
            break;
          }
          logger.debug('CodeMirror already available');
          // @ts-expect-error not error
          return _context2.abrupt("return", window.CodeMirror.default);
        case 4:
          if (!codeMirrorPromise) {
            _context2.next = 7;
            break;
          }
          logger.debug('CodeMirror loading in progress, reusing promise');
          return _context2.abrupt("return", codeMirrorPromise);
        case 7:
          // 创建新的加载 Promise
          codeMirrorPromise = _asyncToGenerator( /*#__PURE__*/_regeneratorRuntime().mark(function _callee() {
            var _window$CodeMirror2;
            return _regeneratorRuntime().wrap(function _callee$(_context) {
              while (1) switch (_context.prev = _context.next) {
                case 0:
                  _context.prev = 0;
                  logger.debug('Starting CodeMirror load from:', cdnUrl);
                  _context.next = 4;
                  return loadScript(cdnUrl);
                case 4:
                  _context.next = 6;
                  return waitForCodeMirror();
                case 6:
                  if ((_window$CodeMirror2 = window.CodeMirror) !== null && _window$CodeMirror2 !== void 0 && _window$CodeMirror2.default) {
                    _context.next = 8;
                    break;
                  }
                  throw new Error('CodeMirror loaded but not properly initialized');
                case 8:
                  logger.debug('CodeMirror loaded successfully');
                  // @ts-expect-error not error
                  return _context.abrupt("return", window.CodeMirror.default);
                case 12:
                  _context.prev = 12;
                  _context.t0 = _context["catch"](0);
                  // 加载失败时清除缓存，允许重试
                  codeMirrorPromise = null;
                  logger.error('Failed to load CodeMirror:', _context.t0);
                  throw _context.t0;
                case 17:
                case "end":
                  return _context.stop();
              }
            }, _callee, null, [[0, 12]]);
          }))();
          return _context2.abrupt("return", codeMirrorPromise);
        case 9:
        case "end":
          return _context2.stop();
      }
    }, _callee2);
  }));
  return _loadCodeMirror.apply(this, arguments);
}