How one can Get Extension Manifest Info

Engaged on an internet extension will be kinda wild — on one aspect you are basically simply coding a web site, on the opposite aspect you are restricted to what the browser says you are able to do within the extension execution surroundings. One change in that surroundings is coming January 2023 — pushing extensions to maneuver to manifest model 3. I not too long ago received interested in whether or not different widespread extensions had accomplished the model 3 replace.

Executing the next command within the background web page (manifest model 2) or service employee (model 3) will present you the extension’s manifest:

chrome.runtime.getManifest()

The getManifest name returns a big object detailing the extension’s manifest. Here is what you’d see for the MetaMask browser extension:

{
    "writer": "https://metamask.io",
    "background": {
        "web page": "background.html",
        "persistent": true
    },
    "browser_action": {
        "default_icon": {
            "16": "pictures/icon-16.png",
            "19": "pictures/icon-19.png",
            "32": "pictures/icon-32.png",
            "38": "pictures/icon-38.png",
            "64": "pictures/icon-64.png",
        },
        "default_popup": "popup.html",
        "default_title": "MetaMask"
    },
    "instructions": {
        "_execute_browser_action": {
            "suggested_key": {
                "chromeos": "Alt+Shift+M",
                "linux": "Alt+Shift+M",
                "mac": "Alt+Shift+M",
                "home windows": "Alt+Shift+M"
            }
        }
    },
    "content_scripts": [
        {
            "all_frames": true,
            "js": [
                "disable-console.js",
                "globalthis.js",
                "lockdown-install.js",
                "lockdown-run.js",
                "lockdown-more.js",
                "contentscript.js"
            ],
            "matches": [
                "file://*/*",
                "http://*/*",
                "https://*/*"
            ],
            "run_at": "document_start"
        }
    ],
    "current_locale": "en_US",
    "default_locale": "en",
    "description": "An Ethereum Pockets in your Browser",
    "externally_connectable": {
        "ids": [
            "*"
        ],
        "matches": [
            "https://metamask.io/*"
        ]
    },
    "icons": {
        "16": "pictures/icon-16.png",
        "19": "pictures/icon-19.png",
        "32": "pictures/icon-32.png",
        "38": "pictures/icon-38.png",
        "48": "pictures/icon-48.png",
        "64": "pictures/icon-64.png",
    },
    "manifest_version": 2,
    "minimum_chrome_version": "66",
    "title": "MetaMask",
    "permissions": [
        "storage",
        "unlimitedStorage",
        "clipboardWrite",
        "http://localhost:8545/",
        "https://*.infura.io/",
        "https://lattice.gridplus.io/*",
        "activeTab",
        "webRequest",
        "*://*.eth/",
        "notifications"
    ],
    "short_name": "MetaMask",
    "update_url": "https://clients2.google.com/service/update2/crx",
    "model": "10.16.1"
}

A lot of internet extensions are nonetheless utilizing manifest model 2, so many extension builders are pushing to complete manifest model 3 work!