get lint staged working with angular cli (v8)

lint-staged.config.js

const path = require('path')
module.exports = {
  '*.ts': relativePaths => {
    return [
      `ng lint --fix --files ${relativePaths.join(' --files ')}`,
      `git add ${relativePaths.join(' ')}`,
    ];
  }
}

package.json

{
  // normal package.json stuff
  "dependencies": {},
  "devDependencies": {
    // other stuff here
    "husky": "^3.0.4",
    "lint-staged": "^9.2.3",
  },
  "husky": {
    "hooks": {
      "pre-commit": "lint-staged -r",
      "pre-push": "npm test"
    }
  }
}