babel-plugin-transform-array-prototype-find

Transforms arr.find(predicate) to ES5 without a polyfill

Inspired by babel-plugin-array-includes.

Example

In

``javascript
[1, 2, 3].find(v => v === 1);
[1, 2, 3]'find';
arr.find(v => v === 1);
arr'find';
`

Out

`javascript
[1, 2, 3].filter(v => v === 1)[0];
[1, 2, 3].filter(v => v === 1)[0];
(function (o, a0) { return Array.isArray(o) ? o.filter(a0)[0] : o.find(a0); })(arr, v => v === 1);
(function (o, a0) { return Array.isArray(o) ? o.filter(a0)[0] : o.find(a0); })(arr, v => v === 1);
`

Caveats

This is not a true replacement for find.
While find stops iterating when it finds a match, filter does not.
If the predicate causes side effects, do not use this plugin.

Installation

`sh
$ npm install babel-plugin-transform-array-prototype-find
`

Usage

$3

.babelrc

`json
{
"plugins": ["transform-array-prototype-find"]
}
`

$3

`sh
$ babel --plugins transform-array-prototype-find script.js
`

$3

`javascript
require("@babel/core").transform("code", {
plugins: ["transform-array-prototype-find"]
});
``