fix: custom slate types definition

src/client/custom-slate-types.d.ts

@@ -0,0 +1,27 @@
+// This example is for an Editor with `ReactEditor` and `HistoryEditor`
+import { BaseEditor, BaseRange } from 'slate'
+import { HistoryEditor } from 'slate-history'
+
+export type CustomEditor = BaseEditor & HistoryEditor
+
+export type CustomElement = {
+  type?: string
+  children: CustomText[]
+}
+
+export type CustomRange = {
+  isCaret?: boolean
+} & BaseRange
+
+export type FormattedText = { text: string; bold?: boolean }
+
+export type CustomText = FormattedText
+
+declare module 'slate' {
+  interface CustomTypes {
+    Editor: CustomEditor
+    Element: CustomElement
+    Text: CustomText
+    Range: CustomRange
+  }
+}