Examine source code of Slack Channel Exporter

{
  "manifest_version": 2,
  "name": "Rob/SI Slack Channel Exporter",
  "version": "1.0.1",
  "description": "Quickly export entire Slack channel and DM history with the click of a button.",
  "browser_action": {
    "default_title": "Export Slack",
    "default_icon": {
      "32": "icons/si-slack-icon-32.png",
      "128": "icons/si-slack-icon-128.png"
    }
  },
  "permissions": [
    "https://*.slack.com/",
    "tabs",
    "downloads"
  ],
  "background": {
    "scripts": [
      "scripts/lib/slack_message.js",
      "scripts/lib/slack_channel.js",
      "scripts/background.js"
    ],
    "persistent": false
  }
}