Is it possible to swap already installed packages from "dependencies" to "devDependencies" just by switching lines?

Question

Here’s an example of the file package.json, installed using the command npm install <nome> --save-dev:

{
"dependencies": {},
"devDependencies": {
"bootstrap": "^4.1.3",
"cross-env": "^5.2.0",
"font-awesome": "^4.7.0",
"jquery": "^3.3.1",
"node-sass": "^4.9.3"
}
}

If I just change manually like this, is something wrong? Outside of some convention, or can something else go wrong later?

(disregard the functionality of the packages, are only to exemplify):

{
"dependencies": {
"font-awesome": "^4.7.0",
},
"devDependencies": {
"bootstrap": "^4.1.3",
"cross-env": "^5.2.0",
"jquery": "^3.3.1",
"node-sass": "^4.9.3"
}
}

Answer 1

Yes, you can move the packages of their dependencies and devDependencies editing the file package json. the way you described it. I would only take care to avoid any typos (e.g., you copied an unnecessary comma at the end of the line just before closing the keys to dependencies: "font-awesome": "^4.7.0",

To be more secure, I would use the traditional command:

npm install module --save-prod

To do the reverse (save as devDependency):

npm install module --save-dev