instanceof keyword is not working as intended

Christian Lindgren shared this problem ago

Solved

Hi,

The `instanceof` keyword is not working as intended for some instances of type Object.

See https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/instanceof#Examples

Node.js cli

const obj = {a: {x: 't1'}, b: {y: 't2'}}
console.log(typeof obj)                 // object
console.log(typeof obj.a)               // object
console.log(typeof obj['a'])            // object
console.log(obj instanceof Object)      // true
console.log(obj.a instanceof Object)    // true
console.log(obj['a'] instanceof Object) // true
const date = new Date()
console.log(typeof date)                // object
console.log(date instanceof Object)     // true
console.log(date instanceof Date)       // true

NoSQLBooster

const obj = {a: {x: 't1'}, b: {y: 't2'}}
console.log(typeof obj)                 // object
console.log(typeof obj.a)               // object
console.log(typeof obj['a'])            // object
console.log(obj instanceof Object)      // false
console.log(obj.a instanceof Object)    // false
console.log(obj['a'] instanceof Object) // false
const date = new Date()
console.log(typeof date)                // object
console.log(date instanceof Object)     // true
console.log(date instanceof Date)       // true

Best regards,

Christian