Examine source code of Pure motion

{
  "manifest_version": 3,
  "name": "Pure motion",
  "description": "The video ad remover",
  "version": "2.5",
  "browser_specific_settings": {
    "gecko": {
      "id": "{d421af4a-f30f-4116-91dd-3095db4a4c3d}",
      "strict_min_version": "118.0"
    }
  },
  "permissions": [
    "declarativeNetRequest",
    "declarativeNetRequestWithHostAccess",
    "scripting"
  ],
  "host_permissions": [
    "*://*.thepuremotion.com/*",
    "*://*.filmorias.com/*",
    "*://*.dood.watch/*",
    "*://*.dood.re/*",
    "*://*.dood.video/*",
    "https://*.mxdcontent.net/*",
    "*://*.4shared.com/*",
    "*://*.cda.pl/*",
    "*://*.cloudvideo.tv/*",
    "*://*.dailymotion.com/*",
    "*://vod.cf.dmcdn.net/*",
    "*://*.filemoon.sx/*",
    "*://*.hqq.tv/*",
    "*://*.mixdrop.co/*",
    "*://*.mixdrop.ag/*",
    "*://*.mdy48tn97.com/*",
    "*://*.mdbekjwqa.pw/*",
    "*://*.mp4upload.com/*",
    "*://*.ok.ru/*",
    "*://*.mycdn.me/*",
    "*://*.streamruby.com/*",
    "*://*.streamruby.net/*",
    "*://*.streamtape.com/*",
    "*://*.streamvid.net/*",
    "*://*.tv2play.hu/*",
    "*://*.upstream.to/*",
    "*://*.upstreamcdn.co/*",
    "*://*.upvid.biz/*",
    "*://*.upvid.org/*",
    "*://*.upvid.cloud/*",
    "*://*.opvid.org/*",
    "*://*.opaganga.site/*",
    "*://*.kolchih.site/*",
    "*://*.mgjobs4u.com/*",
    "*://*.rpgresource.net/*",
    "*://*.confespacomercio.com/*",
    "*://*.uggbootsclearance.us/*",
    "*://*.xaviersarrate.com/*",
    "*://*.confespacomercio.com/*",
    "*://*.wholesalejerseysale.com/*",
    "*://*.opvid.online/*",
    "*://*.ghazette.com/*",
    "*://*.mensmagazineonline.com/*",
    "*://*.civicandarts.org/*",
    "*://*.photonovice.net/*",
    "*://*.bookreadsandreviews.com/*",
    "*://*.dvdcdconverter.com/*",
    "*://*.opvid.online/*",
    "*://*.turbofamilia.store/*",
    "*://*.turbovideo.homes/*",
    "*://*.vgfplay.com/*",
    "*://*.vembed.net/*",
    "*://*.guardstorage.net/*",
    "*://*.vgplayer.xyz/*",
    "*://*.vembed.org/*",
    "*://*.vidbm.com/*",
    "*://*.vidbem.com/*",
    "*://*.vidbom.com/*",
    "*://*.vedpom.com/*",
    "*://*.vadbom.com/*",
    "*://*.vidbam.org/*",
    "*://*.vedbam.xyz/*",
    "*://*.vidboo.org/*",
    "*://*.videa.hu/*",
    "*://*.videakid.hu/*",
    "*://*.vimeo.com/*",
    "*://*.voe.sx/*",
    "*://*.voeunblock1.com/*",
    "*://*.voeun-block.net/*",
    "*://*.fittingcentermondaysunday.com/*",
    "*://*.housecardsummerbutton.com/*",
    "*://*.30sensualizeexpression.com/*",
    "*://*.matriculant401merited.com/*",
    "*://*.scatch176duplicities.com/*",
    "*://*.35volitantplimsoles5.com/*",
    "*://*.availedsmallest.com/*",
    "*://*.simpulumlamerop.com/*",
    "*://*.wolfdyslectic.com/*",
    "*://*.generatesnitrosate.com/*",
    "*://*.cigarlessarefy.com/*",
    "*://*.nectareousoverelate.com/*",
    "*://*.prefulfilloverdoor.com/*",
    "*://*.nonesnanking.com/*",
    "*://*.denisegrowthwide.com/*",
    "*://*.troyyourlead.com/*",
    "*://*.stevenimaginelittle.com/*",
    "*://*.paulkitchendark.com/*",
    "*://*.edwardarriveoften.com/*",
    "*://*.vtube.to/*",
    "*://*.vtbe.net/*",
    "*://*.vtbe.to/*",
    "*://*.wolfstream.tv/*",
    "*://*.yadi.sk/*",
    "*://disk.yandex.com/*",
    "*://disk.yandex.ru/*"
  ],
  "declarative_net_request": {
    "rule_resources": [
      {
        "id": "modify_headers",
        "enabled": true,
        "path": "rules_1.json"
      },
      {
        "id": "modify_headers_2",
        "enabled": true,
        "path": "rules_2.json"
      }
    ]
  },
  "web_accessible_resources": [
    {
      "resources": [
        "/img/*",
        "/templates/*",
        "/videojs/*"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "content_scripts": [
    {
      "matches": [
        "*://*.thepuremotion.com/*",
        "*://*.filmorias.com/*",
        "*://*.sorozatbarat.club/*",
        "*://*.dood.watch/*",
        "*://*.gloria.tv/*",
        "*://*.gounlimited.to/*",
        "*://*.indavideo.hu/*",
        "*://*.livestream.com/*",
        "*://*.mightyupload.com/*",
        "*://*.sendvid.com/*",
        "*://*.supervideo.tv/*",
        "*://*.theplatform.com/*",
        "*://*.userscloud.com/*",
        "*://*.veoh.com/*",
        "*://*.vidoza.net/*",
        "*://*.vidoza.org/*",
        "*://*.vk.com/*"
      ],
      "run_at": "document_idle",
      "js": [
        "loader.js"
      ],
      "all_frames": true
    }
  ],
  "scripts": [
    "dist/background.js"
  ]
}