liboneandone-2/lib/merge.js

Forked from The 1&1 Library for Node and Io

/**
 * Created by Ali on 7/28/2016.
 */

module.exports = function merge(src, dst) {
    // merging means merging src.prop to dst.prop, so we require here to avoid having dst.prop and dst.src.prop.

    var rsrc = require(src)

    // I don't want to clobber any exiting clobbered messages.

    if (!dst['clobbered']) {
        dst['clobbered'] = []
    }

    var rsrckeys = Object.keys(rsrc)

    // If something gets clobbered we log it and also append a timestamped message to dst['clobbered']

    function chkkey(key) {
        if (dst[key]) {
            var msg = Date.now() + " : merge clobbered " + key + ' with ' + src.slice(2) + '.' + key
            console.error(msg)
            dst['clobbered'].push(msg)
        }
        dst[key] = rsrc[key]
    }

    rsrckeys.map(chkkey)
    return dst

}