Undefined typescript object properties?

Question

JavaScript

this is my code

const channel = {},
arr = [string,string,string];
for(let i = 0;i < arr.length;i++ ){
    channel[arr[i]] = "Amo" //equal string value
}

The array contains only string values. example ["a","b","c","n"]. How can I write this code in typescript?

Answer 1

const channel: {[key: string]: string} = {}