// Recursively load one or more directories passed as arguments.

let dir, result = {};

function processFilename(fn) {

const fp = path.join(dir, fn);

let extra;

// If the given filename is a directory, recursively load it.

if (fs.statSync(fp).isDirectory()) {

extra = load(fp);

} else if (path.extname(fp) === '.json') {

extra = require(fp);

}

// The JSON data is independent of the actual file

// hierarchy, so it is essential to extend "deeply".

result = extend(true, result, extra);

}

for (dir of arguments) {

dir = path.resolve(__dirname, dir);

fs.readdirSync(dir).forEach(processFilename);

}

return result;