.prettierrc.json - JavaScript prettier config , 120 line width, tabwidth 2 space, semi, single quote, arrowParens, comma

basic.prettierrc.json

{
  "$schema": "http://json.schemastore.org/prettierrc",
  "arrowParens": "always",
  "trailingComma": "es5",
  "tabWidth": 2,
  "semi": true,
  "singleQuote": true,
  "editorconfig": true,
  "printWidth": 120
}