Convert an array of strings to numbers

JavaScript

const toNumbers = (arr) => arr.map(Number)

// Or
const toNumbers = (arr) => arr.map((x) => + x)

TypeScript

const toNumbers = (arr: string[]): number[] => arr.map(Number)

// Or
const toNumbers = (arr: string[]): number[] => arr.map((x) => +x)

Example

toNumbers(['2', '3', '4']) // [2, 3, 4]