typescript merge multiple objects code example
Example 1: merge properties of object typescript
const target = { a: 1, b: 2 };
const source = { b: 4, c: 5 };
// Copies source to target object without changing
// target object instance
const returnedTarget = Object.assign(target, source);
Example 2: Merging Or Copying Arrays Using Spread Operator
let techlist1= ['spring', 'java'];
let techlist2= ['javascript', 'nodejs', 'mongo'];
let fullstacklist= […techlist1, …techlist2];
console.log(fullstacklist);