array.find doesn't work with Babel

Question

I'm transpiling my ES2015 code using Babel. However it doesn't translate find for Arrays. The following line throws the error TypeError: options.find is not a function

let options = [2,23,4]
options.find(options, x => x < 10)

Answer 1

Use babel polyfill.

require("babel/polyfill");

[1, 2, 3].find((x) => x >= 2);
// => 2

See: Polyfill · Babel

Or you can use callback. Array.find(arr, callback)

Array.find([ 1, 2, 3 ], (x) => x >= 2);
// => 2

Array.prototype.find doesn't work in the runtime · Issue #892 · babel/babel

Answer 2

In newer versions it's

import 'babel-polyfill'

source: Babel Docs

Answer 3

Or if you're using ES6 imports already

import 'babel/polyfill';