refactor: merge blocks-editor package with web (#2217)

packages/web/src/javascripts/Components/SuperEditor/Utils.ts

@@ -0,0 +1,37 @@
+import { $getRoot, EditorState } from 'lexical'
+
+export function truncateString(string: string, limit: number) {
+  if (string.length <= limit) {
+    return string
+  } else {
+    return string.substring(0, limit) + '...'
+  }
+}
+
+export function handleEditorChange(
+  editorState: EditorState,
+  previewLength?: number,
+  onChange?: (value: string, previewText: string) => void,
+) {
+  const childrenNodes = $getRoot().getAllTextNodes().slice(0, 2)
+  let previewText = ''
+  childrenNodes.forEach((node, index) => {
+    previewText += node.getTextContent()
+    if (index !== childrenNodes.length - 1) {
+      previewText += '\n'
+    }
+  })
+
+  if (previewLength) {
+    previewText = truncateString(previewText, previewLength)
+  }
+
+  try {
+    const stringifiedEditorState = JSON.stringify(editorState.toJSON())
+    onChange?.(stringifiedEditorState, previewText)
+  } catch (error) {
+    window.alert(
+      `An invalid change was made inside the Super editor. Your change was not saved. Please report this error to the team: ${error}`,
+    )
+  }
+}