Rule: only-arrow-functions

Disallows traditional (non-arrow) function expressions.

Rationale

Traditional functions don’t bind lexical scope, which can lead to unexpected behavior when accessing ‘this’.

Config

Two arguments may be optionally provided:

  • "allow-declarations" allows standalone function declarations.
  • "allow-named-functions" allows the expression function foo() {} but not function() {}.
Examples
"only-arrow-functions": true
"only-arrow-functions": [true, "allow-declarations", "allow-named-functions"]
Schema
{
  "type": "array",
  "items": {
    "type": "string",
    "enum": [
      "allow-declarations",
      "allow-named-functions"
    ]
  },
  "minLength": 0,
  "maxLength": 1
}