添加 kit 子目录

kit/src/context/index.js

@@ -0,0 +1,33 @@
+/**
+ * 对象管理
+ * 懒加载对象
+ */
+const config = require("../config");
+module.exports = class Context {
+    constructor() {
+        this.beans = {}
+        this.standalones = {}
+    }
+    standalone(name, factory){
+        if ( this.standalones[name] ){
+            throw `重定义 ${name}`
+        }
+
+        if ( ! factory ) {
+            throw `定义 ${name} 时未提供必须参数 factory`
+        }
+
+        this.standalones[name] = factory
+    }
+    async get(name){
+        if ( this.beans[name] ) {
+            return this.beans[name]
+        }
+        if ( this.standalones[name] ){
+            this.beans[name] = await this.standalones[name]()
+            return this.beans[name]
+        } else {
+            return undefined
+        }
+    }
+}