How to get the string length in bytes in nodejs?

Alternatively, you can use TextEncoder

new TextEncoder().encode(str).length

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Assume it's slower though

Here is an example:

str = 'äáöü';

console.log(str + ": " + str.length + " characters, " +
  Buffer.byteLength(str, 'utf8') + " bytes");

// äáöü: 4 characters, 8 bytes

Buffer.byteLength(string, [encoding])

function getBytes(string){
  return Buffer.byteLength(string, 'utf8')
}

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