feat: Support server-side rendering.

Author: jaywcjlove

src/index.js

@@ -37,8 +37,8 @@ function ReactCodeMirror(props = {}, ref) {
 
  // http://codemirror.net/doc/manual.html#config
  async function setOptions(instance, opt = {}) {
- if (typeof opt === 'object') {
- const mode = CodeMirror.findModeByName(opt.mode);
+ if (typeof opt === 'object' && window) {
+ const mode = CodeMirror.findModeByName(opt.mode || '');
  if (mode && mode.mode) {
  await import(`codemirror/mode/${mode.mode}/${mode.mode}.js`);
  }
@@ -54,7 +54,7 @@ function ReactCodeMirror(props = {}, ref) {
  }
 
  useEffect(() => {
- if (!editor) {
+ if (!editor && window) {
  // 生成codemirror实例
  const instance = CodeMirror.fromTextArea(textareaRef.current, {...defaultOptions, ...options});
  const eventDict = getEventHandleFromProps();
@@ -71,29 +71,29 @@ function ReactCodeMirror(props = {}, ref) {
  setOptions(instance, {...defaultOptions, ...options});
  }
  return () => {
- if (editor) {
+ if (editor && window) {
  editor.toTextArea();
  setEditor(undefined);
  }
  }
  }, []);
 
  useMemo(() => {
- if (!editor) return;
+ if (!editor || !window) return;
  const val = editor.getValue();
  if (value !== undefined && value !== val) {
  editor.setValue(value);
  }
  }, [value]);
 
  useMemo(() => {
- if (!editor) return;
+ if (!editor || !window) return;
  editor.setSize(width, height);
  }, [width, height]);
 
 
  useMemo(() => {
- if (!editor) return;
+ if (!editor || !window) return;
  setOptions(editor, {...defaultOptions, ...options});
  }, [options]);