Javascript - How to convert buffer to a string?

Question

This is example of converting String to a Buffer and back to String:

let bufferOne = Buffer.from(\'This is a buffer example.\');
console.log(bufferOne);

//          


        

Answer 1

No native way for that, but I wrote a sample method for you:

function bufferFromBufferString(bufferStr) {
    return Buffer.from(
        bufferStr
            .replace(/[<>]/g, '') // remove < > symbols from str
            .split(' ') // create an array splitting it by space
            .slice(1) // remove Buffer word from an array
            .reduce((acc, val) => 
                acc.concat(parseInt(val, 16)), [])  // convert all strings of numbers to hex numbers
     )
}

result:

const newBuffer = bufferFromBufferString('<Buffer 54 68 69 73 20 69 73 20 61 20 62 75 66 66 65 72 20 65 78 61 6d 70 6c 65 2e>')
> newBuffer
<Buffer 54 68 69 73 20 69 73 20 61 20 62 75 66 66 65 72 20 65 78 61 6d 70 6c 65 2e>
> newBuffer.toString()
'This is a buffer example.'

Answer 2

Automatically converted when concatenated with an empty string:

console.log('' + bufferOne)