I have the following Object:
let car = { year: 2004, type: {name: "BMW"} }
Now, I am trying to add a property to the inner object "type". My aim is to achieve this using the spread operator as I require a new object due to the existing one being an immutable state object. The desired result should look like this:
{ year: 2004, type: {name: "BMW", model: "3er"}}
What would be the best approach to accomplish this task?
let vehicle = { year: 2018, brand: "Toyota" };
let updatedVehicle = {...vehicle, brand: "Honda", model: "Civic"};
Check out these examples:
(Not Mutable)
let vehicle = { year: 2004, type: {name: "BMW"} } // updated
Object.assign(vehicle.type, {model: "3er"});
console.log(vehicle)(Immutable)
let car = { year: 2004, type: {name: "BMW"} } // remains unchanged
const updatedCar = Object.assign({}, car, {type:{...car.type, model: "3er"}});
console.log(updatedCar)My goal was to introduce a new element into this intricate object structure.
const functionParams = {
handler,
runtime,
environment: {
variables: {
restrictedActions: config.restrictedActions
}
}
}
I managed to do it in the following way:
const newFunctionParams = {...functionParams, environment: {
...functionParams.environment, variables: {
...functionParams.environment.variables,
APIAllowEndpoint: `https://severless....`,
APIDenyEndpoint: `https://severless....`,
TOPIC: topicArn
}
}}
The outcome:
{
handler,
runtime,
environment: {
variables: {
restrictedActions: config.restrictedActions,
APIAllowEndpoint: `https://severless....`,
APIDenyEndpoint: `https://severless....`,
TOPIC: topicArn
}
}
}
Credit goes to @chelmertz
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