{
  "name": "lawrenceandrews.co.uk",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "preinstall": "rm -rf node_modules/less/.git",
    "start": "browser-sync start --server --files '**/*.css, **/*.html, **/*.js, !node_modules/**/*' --directory --port 6037"
  },
  "author": "",
  "license": "ISC",
  "devDependencies": {
    "browser-sync": "^2.18.13"
  },
  "dependencies": {
    "less": "^3.10.0"
  }
}

{
  "name": "lawrenceandrews.co.uk",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "postinstall": "rm -rf node_modules/less/.git",
    "start": "browser-sync start --server --files '**/*.css, **/*.html, **/*.js, !node_modules/**/*' --directory --port 6037"
  },
  "author": "",
  "license": "ISC",
  "devDependencies": {
    "browser-sync": "^2.18.13"
  },
  "dependencies": {
    "less": "^3.10.0"
  }
}

Change pre to post install
Change pre to post install
