minBy | /collections/mod.ts | std@0.181.0

function minBy

import { minBy } from "https://dotland.deno.dev/std@0.181.0/collections/mod.ts";

minBy<T>(array: readonly T[], selector: (el: T) => number): T | undefined

Returns the first element that is the smallest value of the given function or undefined if there are no elements

minBy<T>(array: readonly T[], selector: (el: T) => string): T | undefined

minBy<T>(array: readonly T[], selector: (el: T) => bigint): T | undefined

minBy<T>(array: readonly T[], selector: (el: T) => Date): T | undefined

Returns the first element that is the smallest value of the given function or undefined if there are no elements

Examples

Example 1

import { minBy } from "https://deno.land/std@0.181.0/collections/min_by.ts";
import { assertEquals } from "https://deno.land/std@0.181.0/testing/asserts.ts";

const people = [
  { name: "Anna", age: 34 },
  { name: "Kim", age: 42 },
  { name: "John", age: 23 },
];

const personWithMinAge = minBy(people, (i) => i.age);

assertEquals(personWithMinAge, { name: "John", age: 23 });