Examine source code of lemgthbook editor

{
  "manifest_version": 2,
  "name": "lemgthbook editor",
  "version": "1.1.3resigned1",
  "description": "corrects accidemtal use of forbiddem glyph im text editor fields of lemgthbook groups.",
  "icons": {
    "48": "icons/smek_48px.png",
    "96": "icons/smek_96px.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.facebook.com/*"
      ],
      "js": [
        "lemgthbook_editor.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{8d73034a-eaf8-42c4-8557-6308ffa65c32}"
    }
  }
}