Sort an array of items by given key

JavaScript

const sortBy = (arr, k) =>
  arr.concat().sort((a, b) => (a[k] > b[k] ? 1 : a[k] < b[k] ? -1 : 0))

TypeScript

const sortBy = <T extends Record<string, any>, K extends keyof T>(arr: T[], k: K): T[] =>
  arr.concat().sort((a, b) => (a[k] > b[k] ? 1 : a[k] < b[k] ? -1 : 0))

Example

const people = [
  { name: 'Foo', age: 42 },
  { name: 'Bar', age: 24 },
  { name: 'Fuzz', age: 36 },
  { name: 'Baz', age: 32 },
]

sortBy(people, 'age')

//  [
//    { name: 'Bar', age: 24 },
//    { name: 'Baz', age: 32 },
//    { name: 'Fuzz', age: 36 },
//    { name: 'Foo', age: 42 },
//  ]