putout/lib/merge.js

the pluggable code transformer

'use strict';

const deepmerge = require('deepmerge');
const arrayUnion = (...a) => [...new Set(a.flat())];

const arrayMerge = (a, b) => arrayUnion(b, a);

module.exports = (...args) => {
    return deepmerge.all(args, {
        arrayMerge,
    });
};