When I got error I had "browser": true instead of "node": true.
I have fixed this with following config for .eslintrc.json file-
{
"env": {
"node": true,
"commonjs": true
},
"extends": "eslint:recommended",
"rules": {
"indent": [
"error",
"tab"
],
"linebreak-style": [
"error",
"unix"
],
"quotes": [
"error",
"single"
],
"semi": [
"error",
"always"
]
},
"parserOptions": {
"ecmaVersion": 2015
}
}
Thanks @FelixKling and @Jaromanda X for quick responses.