CODEWITHSUNDEEP
javascriptecmascript-6babeljs
Hedge
Hedge

Reputation: 16768

array.find doesn't work with Babel

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)

Upvotes: 11

Views: 14604

Answers (4)

Dmytro K.
Dmytro K.

Reputation: 169

If you just concatenate your javascript files with Gulp or Grunt, you can add the script before your javascript files: node_modules/babel-polyfill/dist/polyfill.js.

Do not forget to install it: npm i babel-polyfill.

Upvotes: 0

Salman Hasrat Khan
Salman Hasrat Khan

Reputation: 2006

In newer versions it's 

import 'babel-polyfill'

source: Babel Docs

Upvotes: 4

Mulan
Mulan

Reputation: 135357

Or if you're using ES6 imports already

import 'babel/polyfill';

Upvotes: 3

Matt - sanemat
Matt - sanemat

Reputation: 5618

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

Upvotes: 19

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