The
flat()method creates a new array with all sub-array elements concatenated into it recursively up to the specified depth.(c) MDN
🐊Putout plugin adds ability to convert concat to flat.
npm i @putout/plugin-convert-concat-to-flat -D
{
"rules": {
"convert-concat-to-flat": "on"
}
}[].concat(...array);array.flat();MIT