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@Aldizh Aldizh/reduce_for_objects

Last active May 1, 2020
What would you like to do?
Utility for reducing array of objects
Problem: Given an array of objects parse those objects
to form meaningful key value pairs
// Input
const dataSource = [
{id: 48, code: "firstName", description: "John"},
{id: 49, code: "lastName", description: "Smith"},
{id: 49, code: "occupation", description: "Agent"},
{id: 47, code: "status", description: "Active"},
// Output
const output = {
firstName: "John",
lastName: "Smith",
occupation: "Agent",
status: "Active",
// Reduce Solution
const final = dataSource.reduce((accumulator, currentObj) => {
const newObj = {};
newObj[currentObj['code']] = currentObj['description'];
return Object.assign(accumulator, newObj);
}, {})
// Map solution (Gives you an array that needs to be coverted to an object)
const final2 = => ({
[obj.code]: obj.description
console.log('Reduce method: ', final)
console.log('Map method: ', final2)
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