@putout/plugin-apply-flat-map [![NPM version][NPMIMGURL]][NPMURL]

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[NPMURL]: https://npmjs.org/package/@putout/plugin-apply-flat-map "npm"

> The flatMap() method returns a new array formed by applying a given callback function to each element of the array, and then flattening the result by one level.
> It is identical to a map() followed by a flat() of depth 1 (arr.map(...args).flat()), but slightly more efficient than calling those two methods separately.
>
> (c) MDN

🐊Putout plugin adds ability to apply flatMap(). Check out in 🐊Putout Editor.

Install

``
npm i @putout/plugin-apply-flat-map
`

Rule

`json
{
"rules": {
"apply-flat-map": "on"
}
}
`

❌ Example of incorrect code

`js
array
.map(getId)
.flat();
`

✅ Example of correct code

`js
array.flatMap(getId);
`

Comparison

Linter | Rule | Fix
--------|-------|------------|
🐊 Putout | apply-flat-map | ✅
⏣ ESLint | unicorn/prefer-flat-map | ✅
🏛 Rome | useFlatMap` | ✅

License

MIT