Plugins: Add support for joplin.plugins.require API to allow using sqlite3 or fs-extra from a plugin

packages/app-cli/tests/support/plugins/nativeModule/api/JoplinSettings.d.ts

@@ -0,0 +1,57 @@
+import Plugin from '../Plugin';
+import { SettingItem, SettingSection } from './types';
+export interface ChangeEvent {
+    /**
+     * Setting keys that have been changed
+     */
+    keys: string[];
+}
+export declare type ChangeHandler = (event: ChangeEvent) => void;
+/**
+ * This API allows registering new settings and setting sections, as well as getting and setting settings. Once a setting has been registered it will appear in the config screen and be editable by the user.
+ *
+ * Settings are essentially key/value pairs.
+ *
+ * Note: Currently this API does **not** provide access to Joplin's built-in settings. This is by design as plugins that modify user settings could give unexpected results
+ *
+ * [View the demo plugin](https://github.com/laurent22/joplin/tree/dev/packages/app-cli/tests/support/plugins/settings)
+ */
+export default class JoplinSettings {
+    private plugin_;
+    constructor(plugin: Plugin);
+    private get keyPrefix();
+    private namespacedKey;
+    /**
+     * Registers a new setting. Note that registering a setting item is dynamic and will be gone next time Joplin starts.
+     * What it means is that you need to register the setting every time the plugin starts (for example in the onStart event).
+     * The setting value however will be preserved from one launch to the next so there is no risk that it will be lost even if for some
+     * reason the plugin fails to start at some point.
+     */
+    registerSetting(key: string, settingItem: SettingItem): Promise<void>;
+    /**
+     * Registers a new setting section. Like for registerSetting, it is dynamic and needs to be done every time the plugin starts.
+     */
+    registerSection(name: string, section: SettingSection): Promise<void>;
+    /**
+     * Gets a setting value (only applies to setting you registered from your plugin)
+     */
+    value(key: string): Promise<any>;
+    /**
+     * Sets a setting value (only applies to setting you registered from your plugin)
+     */
+    setValue(key: string, value: any): Promise<void>;
+    /**
+     * Gets a global setting value, including app-specific settings and those set by other plugins.
+     *
+     * The list of available settings is not documented yet, but can be found by looking at the source code:
+     *
+     * https://github.com/laurent22/joplin/blob/dev/packages/lib/models/Setting.ts#L142
+     */
+    globalValue(key: string): Promise<any>;
+    /**
+     * Called when one or multiple settings of your plugin have been changed.
+     * - For performance reasons, this event is triggered with a delay.
+     * - You will only get events for your own plugin settings.
+     */
+    onChange(handler: ChangeHandler): Promise<void>;
+}