Querying objects with dot notation fails with error: TypeError: Cannot use 'in' operator to search for 'b' in null

[olmuz]

Querying objects with dot notation fails if there is an object with null value

Steps to reproduce:

const Loki = require('lokijs');
const db = new Loki();

const coll = db.addCollection('myCollection');

coll.insert({ a: { b: 'c' } });
coll.insert({ a: null });

coll.find({ 'a.b': 'c' });

Error:

/node_modules/lokijs/src/lokijs.js:418
      if (typeof root === 'object' && path in root) {
                                           ^

TypeError: Cannot use 'in' operator to search for 'b' in null

LokiJS version - 1.5.12

[blaky]

My PR should fix it: #896

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.