I’m trying to get a user Discord username by a Discord bot using Discord.js V14.

const { Client, Intents } = require('discord.js');
const client = new Client({ intents: [Intents.FLAGS.GUILD_MESSAGES, Intents.FLAGS.GUILDS] });

client.once('ready', () => {
    console.log('Bot is ready');
});

client.on('message', message => {
    if (message.content = '!username') {
        const username = message.author.username;
        message.channel.send(`Your username is: ${username}`);
    }
});

client.login('your-bot-token');