add initial marp implementation with sample content and build configuration

node_modules/mj-context-menu/js/variable.d.ts

@@ -0,0 +1,29 @@
+import { VariableItem } from './variable_item.js';
+import { VariablePool } from './variable_pool.js';
+import { ParserFactory } from './parser_factory.js';
+export declare class Variable<T> {
+    private _name;
+    private getter;
+    private setter;
+    private items;
+    static fromJson(_factory: ParserFactory, { name: name, getter: getter, setter: setter }: {
+        name: string;
+        getter: () => string | boolean;
+        setter: (x: (string | boolean)) => void;
+    }, pool: VariablePool<string | boolean>): void;
+    constructor(_name: string, getter: (node?: HTMLElement) => T, setter: (x: T, node?: HTMLElement) => void);
+    get name(): string;
+    getValue(node?: HTMLElement): T;
+    setValue(value: T, node?: HTMLElement): void;
+    register(item: VariableItem): void;
+    unregister(item: VariableItem): void;
+    update(): void;
+    registerCallback(func: Function): void;
+    unregisterCallback(func: Function): void;
+    toJson(): {
+        type: string;
+        name: string;
+        getter: string;
+        setter: string;
+    };
+}