youtube-music/plugins/sponsorblock/front.js

const { ipcRenderer } = require('electron');
const is = require('electron-is');

let currentSegments = [];

module.exports = () => {
  ipcRenderer.on('sponsorblock-skip', (_, segments) => {
    currentSegments = segments;
  });

  document.addEventListener('apiLoaded', () => {
    const video = document.querySelector('video');

    video.addEventListener('timeupdate', (e) => {
      for (const segment of currentSegments) {
        if (
          e.target.currentTime >= segment[0]
          && e.target.currentTime < segment[1]
        ) {
          e.target.currentTime = segment[1];
          if (is.dev()) {
            console.log('SponsorBlock: skipping segment', segment);
          }
        }
      }
    });
    // Reset segments on song end
    video.addEventListener('emptied', () => currentSegments = []);
  }, { once: true, passive: true });
};