DevDependencies and dependencies syntax in Node package.json

/*
DevDependencies and dependencies syntax in Node package.json =
*/

"name": "my_package",
"version": "1.0.0",
"dependencies": {
  "my_dep": "^1.0.0",
  "another_dep": "~2.2.0"
},
"devDependencies" : {
  "my_test_framework": "^3.1.0".
  "another_dev_dep": "1.0.0 - 1.2.0"
}