feat(typing): Add basic typing to the lib for TS

Only in the case of the get

README.md

@@ -138,6 +138,26 @@ import { Config } from 'node-json-db/dist/lib/JsonDBConfig'
 const db = new JsonDB(new Config("myDataBase", true, false, '/'));
 ```
 
+#### Typing
+With TypeScript, you have access to a new method: getObject<T> that will take care of typing your return object.
+```typescript
+import { JsonDB } from 'node-json-db';
+import { Config } from 'node-json-db/dist/lib/JsonDBConfig'
+
+const db = new JsonDB(new Config("myDataBase", true, false, '/'));
+
+interface FooBar {
+    Hello: string
+    World: number
+}
+const object = {Hello: "World", World: 5} as FooBar;
+
+db.push("/test", object);
+
+//Will be typed as FooBar in your IDE
+const result = db.getObject<FooBar>("/test");
+```
+
 
 ### Array Support
 You can also access the information stored into arrays and manipulate them.

src/JsonDB.ts

@@ -133,13 +133,21 @@ export class JsonDB {
 
     /**
      * Get the wanted data
-     * @param dataPath
+     * @param dataPath path of the data to retrieve
      */
     public getData(dataPath: string): any {
         const path = this.processDataPath(dataPath)
         return this.retrieveData(path, false)
     }
 
+    /**
+     * Same as getData only here it's directly typed to your object
+     * @param dataPath  path of the data to retrieve
+     */
+    public getObject<T>(dataPath: string): T {
+        return this.getData(dataPath);
+    }
+
     /**
      * Check for existing datapath
      * @param dataPath

test/02-jsondb.test.ts

@@ -11,6 +11,11 @@ const testFile4 = "test/array_file"
 const testFile5 = "test/test_file_empty"
 const testFile6 = "test/test_delete"
 
+
+interface Test {
+    Hello: string
+    World: number
+}
 describe('JsonDB', () => {
     describe('Exception/Error', () => {
         test('should create create a DataError', () => {
@@ -102,6 +107,12 @@ describe('JsonDB', () => {
             expect(db.getData("@")).toBe(object)
         })
 
+        test('should store the data with typing', () => {
+            const object = {Hello: "test", World: 0} as Test;
+            db.push("@/hello", object)
+            const result = db.getObject<Test>("@");
+            expect(result).toBe(object)
+        })
         test('should have data at root', () => {
             expect(db.exists('@test@test')).toBeTruthy()
         })