changelog-guru/lib/utils/merge.js

Git changelog generator

import deepmerge from 'deepmerge';
export const arrayMerge = (target, source, options) => {
    const destination = target.slice();
    source.forEach((item, index) => {
        if (destination[index] === undefined)
            destination[index] = options.cloneUnlessOtherwiseSpecified(item, options);
        else if (options.isMergeableObject(item))
            destination[index] = deepmerge(target[index], item, options);
        else if (target.indexOf(item) < 0)
            destination.push(item);
    });
    return destination;
};