chomens-bot-js/plugins/bruhify.js

const convert = require('color-convert');
module.exports = {
  inject: function(bot) {
    bot.bruhifyText = '';
    let startHue = 0;
    timer = setInterval(() => {
      if (bot.bruhifyText === '') return;

      let hue = startHue;
      const displayName = bot.bruhifyText;
      const increment = (360 / Math.max(displayName.length, 20));
      const component = [];
      for (const character of displayName) {
        const color = convert.hsv.hex(hue, 100, 100);
        component.push({text: character, color: `#${color}`});
        hue = (hue + increment) % 360;
      }
      bot.core.run(`minecraft:title @a actionbar ${JSON.stringify(component)}`);
      startHue = (startHue + increment) % 360;
    }, 100);
  },
};