nested objects

[entip]

For anyone who is having problem storing nested object in metadata:
Winston is formatting the object, and adding some extrafield, if you want to store the object as it is
In the winston-mongodb node module, there's a helpers.js file, which contain this function
function cloneMeta(node, opt_parents) { if (!(node instanceof Object) || (node instanceof ObjectID) || (node instanceof Buffer)) { return node; } let copy = Array.isArray(node) ? [] : {}; if (node instanceof Date) { return new Date(node.getTime()); } else if (node instanceof Error) { // This is needed because Error's message, name and stack isn't accessible when cycling through properties copy = {message: node.message, name: node.name, stack: node.stack}; } opt_parents = opt_parents || []; opt_parents.push(node); for (let key in node) { if (!Object.prototype.hasOwnProperty.call(node, key)) { continue; } let value = node[key]; let newKey = key; if (newKey.includes('.') || newKey.includes('$')) { newKey = newKey.replace(/\./g, '[dot]').replace(/\$/g, '[$]'); } if (value instanceof Object) { if (opt_parents.indexOf(value) === -1) { copy[newKey] = cloneMeta(value, opt_parents); } else { copy[newKey] = '[Circular]'; } } else { copy[newKey] = value; } } opt_parents.pop(); return copy; }

Which format meta if type is object, you only have to remove the "not operator" and return the object as it is in return node