typescript best practice to use map or set code example

Example: typescript create map

var map = new Map();  

map.set('1', 'Ail');     
map.set(1, 'testvalue');    

console.log( "Value 1= " + map.get(1));   

console.log( "Key is Present in the Map = " + map.has(3) );   

console.log( "Delete value from Map = " + map.delete(1) );