Error

The signature '(data: string): string' of 'btoa' is deprecated.

해결방법

base64 인코딩

const text = '가나다'
Buffer.from(text, 'utf8').toString('base64')

// result is 6rCA64KY64uk

base64 디코딩

const text = '6rCA64KY64uk'
Buffer.from(text, 'base64').toString('utf8')

// result is 가나다