initial

ts/index.ts

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+import 'typings-global'
+let lodash = require('lodash')
+
+export class Foldable {
+  saveableProperties: string[]
+
+  /**
+   * folds a class into an object
+   */
+  foldToObject () {
+    let newFoldedObject = {}
+    for (let keyName of this.saveableProperties) {
+      newFoldedObject[ keyName ] = lodash.cloneDeep(this[ keyName ])
+    }
+    return newFoldedObject
+  }
+
+  /**
+   * enfolds data from an object
+   */
+  enfoldFromObject(objectArg) {
+    for (let keyName in objectArg) {
+      if (this.saveableProperties.indexOf(keyName) !== -1) {
+        this[ keyName ] = objectArg[ keyName ]
+      }
+    }
+  }
+}
+
+/**
+ * Decorator that marks a property as foldable
+ */
+export let foldDec = () => {
+  return (target: any, key: string) => {
+    if (!target.saveableProperties) { target.saveableProperties = [] }
+    target.saveableProperties.push(key)
+  }
+}