I don't understand about spread syntax inside objects.

console.log(...false) // TypeError not iterable
console.log(...1) // TypeError not iterable
console.log(...null) // TypeError not iterable
console.log(...undefined) // TypeError not iterable

I understand above codes that occurs error because of none-iterator.

But these codes are working well.

console.log({...false}) // {}
console.log({...1}) // {}
console.log({...null}) // {}
console.log({...undefined}) // {}

Please let me know why the above codes are working.

I don't understand about spread syntax inside objects.

console.log(...false) // TypeError not iterable
console.log(...1) // TypeError not iterable
console.log(...null) // TypeError not iterable
console.log(...undefined) // TypeError not iterable

I understand above codes that occurs error because of none-iterator.

But these codes are working well.

console.log({...false}) // {}
console.log({...1}) // {}
console.log({...null}) // {}
console.log({...undefined}) // {}

Please let me know why the above codes are working.

• javascript
• spread-syntax

• 1 Prepend "use strict"; Object.defineProperty(Number.prototype, Symbol.iterator, { enumerable: false, configurable: true, writable: true, value: ({ [Symbol.iterator]: function*(){ for(let i = 0; i < Math.abs(this); ++i){ yield i * (this < 0 ? -1 : 1); } } })[Symbol.iterator] }); to make console.log(...1) work.