Cannot find name 'driver'

I’ve been working with Appium for some days now and I was able to make it running for most of what I want to but I hit a wall when trying to use the driver.hideKeyboard(); and driver.touchScroll() commands.

Maybe I’m missing something like a package with types or the right import, but when trying to use the driver, I get an “Cannot find name ‘driver’”.

Thanks for any help in advance, going in circles here.

$ node -v
$ appium -v
"devDependencies": {
        "@types/chai": "^4.2.7",
        "@types/cucumber": "^6.0.0",
        "@types/node": "^13.1.4",
        "@wdio/appium-service": "^5.18.2",
        "@wdio/cli": "^5.18.4",
        "@wdio/cucumber-framework": "^5.16.15",
        "@wdio/local-runner": "^5.18.4",
        "@wdio/spec-reporter": "^5.16.11",
        "@wdio/sync": "^5.17.0",
        "chai": "^4.2.0",
        "ts-node": "^8.5.4",
        "tsconfig-paths": "^3.9.0",
        "typescript": "^3.7.4"