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'use strict'
const textDecoder = new TextDecoder()
/**
* @see https://encoding.spec.whatwg.org/#utf-8-decode
* @param {Uint8Array} buffer
*/
function utf8DecodeBytes (buffer) {
if (buffer.length === 0) {
return ''
}
// 1. Let buffer be the result of peeking three bytes from
// ioQueue, converted to a byte sequence.
// 2. If buffer is 0xEF 0xBB 0xBF, then read three
// bytes from ioQueue. (Do nothing with those bytes.)
if (buffer[0] === 0xEF && buffer[1] === 0xBB && buffer[2] === 0xBF) {
buffer = buffer.subarray(3)
}
// 3. Process a queue with an instance of UTF-8’s
// decoder, ioQueue, output, and "replacement".
const output = textDecoder.decode(buffer)
// 4. Return output.
return output
}
module.exports = {
utf8DecodeBytes
}
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