Add MarkEdit.userSettings to read settings.json

Author: cyanzhong

README.md

@@ -34,6 +34,10 @@ The `MarkEdit` object provides these interfaces:
 
 ```ts
 interface MarkEdit {
+  // Configuration of the current editor.
+  editorConfig: Record<string, unknown>;
+  // User-defined settings loaded from the settings.json file.
+  userSettings: JSONObject;
   // CodeMirror EditorView instance of the current editor.
   editorView: EditorView;
   // Convenient text editing interfaces.

markedit.d.ts

@@ -31,6 +31,13 @@ export interface MarkEdit {
    */
   editorConfig: Record<string, unknown>;
 
+  /**
+   * User-defined settings loaded from the [settings.json](https://github.com/MarkEdit-app/MarkEdit/wiki/Customization#advanced-settings) file.
+   *
+   * For example, user-defined scripts can use this to provide additional configurations.
+   */
+  userSettings: JSONObject;
+
   /**
    * CodeMirror EditorView instance of the current editor.
    */
@@ -385,3 +392,21 @@ export type SavePanelOptions = {
    */
   fileName?: string;
 };
+
+/**
+ * Typed JSON value.
+ */
+type JSONValue =
+  | string
+  | number
+  | boolean
+  | null
+  | JSONObject
+  | JSONValue[];
+
+/**
+ * Typed JSON Object.
+ */
+type JSONObject = {
+  [key: string]: JSONValue;
+};