There’s a few drawback in your code, within the hendecadsFromBits perform, you have to use the numeric worth of bit and within the generateMnemonic perform, if you name hendecadsFromBits, you have to move the end result to Array.from()

Right here is how you would repair your code:

export const generateMnemonic = async () => {
    const ent = window.crypto.getRandomValues(new Uint8Array(16));
    const entBits = toBinString(ent);
    const entHash = Array.from(new Uint8Array(
        await window.crypto.delicate.digest("SHA-256", ent)
    ));
    const entHashBits = toBinString(entHash)
    const checksum = entHashBits.slice(0, 4);
    const entCS = entBits + checksum;
    const chunks = Array.from(hendecadsFromBits(entCS));
    const phrases = [];
    for (let i = 0; i < chunks.size; i++) {
        phrases.push(wordlist[chunks[i]]);
    }
    return phrases.be a part of(' ');
};

const toBinString = (bytes) => bytes.cut back((str, byte) => str + byte.toString(2).padStart(8, '0'), '')

perform* hendecadsFromBits(bits) {
    let i = 0;
    let val = 0;
    for (const little bit of bits) {
        if (i == 11) {
            yield val;
            i = val = 0;
        }
        val |= parseInt(bit, 10) << i++;
    }
    if (i > 0) yield val;
}