JAVASCRIPT

object to map javascript

const map = new Map(Object.entries({foo: 'bar'}));

map.get('foo'); // 'bar'

javascript map to object

Object.fromEntries(Map)

return object from map javascript

const rockets = [
    { country:'Russia', launches:32 },
    { country:'US', launches:23 },
    { country:'China', launches:16 },
    { country:'Europe(ESA)', launches:7 },
    { country:'India', launches:4 },
    { country:'Japan', launches:3 }
];

const launchOptimistic = rockets.map(elem => (
  {
    country: elem.country,
    launches: elem.launches+10
  } 
));

console.log(launchOptimistic);
 Run code snippet

js map on object

import { map } from "ramda"

const double = x => x * 2;

const mappedObject = map(double, {x: 1, y: 2, z: 3}); //=> {x: 2, y: 4, z: 6}