HarmonyOS ets文件，合并两个Record记录

function assign(target: Record<string, Object>, ...source: Object[]): Record<string, Object> { 
  for (let s of source) { 
    for (let k of Object.keys(s)) { 
      target[k] = Reflect.get(s, k) 
    } 
  } 
  return target 
} 
 
class D { 
  b: number 
  c: number 
 
  constructor(v1: number, v2: number) { 
    this.b = v1; 
    this.c = v2; 
  } 
} 
 
const target: Record<string, Object> = { "a": 1, "b": 2, } 
const source: D = new D(4, 5) 
const returnedTarget: Record<string, Object> = assign(target, source) 
 
console.log(JSON.stringify(target))