plugin-remove-useless-map

@putout/plugin-remove-useless-map

The map() method creates a new array populated with the results of calling a provided function on every element in the calling array.

(c) MDN

🐊Putout plugin adds ability to remove useless map().

Install

npm i @putout/plugin-remove-useless-map

Rule

{
    "rules": {
        "remove-useless-map": "on"
    }
}

❌ Example of incorrect code

const [str] = [];

for (const line of lines) {
    [str].push(`hello ${line}`);
}

const x = [];

for (const a of array) {
    x.push(a);
}

Object
    .entries(a)
    .map(([a, b]) => [a, b]);

✅ Example of correct code

const [line] = lines;
const str = `hello ${line}`;

const x = array;

License

MIT