Require or disallow trailing comma (comma-dangle)

Rule Details

This rule extends the base eslint/comma-dangle rule. It adds support for TypeScript syntax.

See the ESLint documentation for more details on the comma-dangle rule.

Rule Changes

{
  // note you must disable the base rule as it can report incorrect errors
  "comma-dangle": "off",
  "@typescript-eslint/comma-dangle": ["error"]
}

In addition to the options supported by the comma-dangle rule in ESLint core, the rule adds the following options:

Options

This rule has a string option and an object option.

• Object option:

  • "enums" is for trailing comma in enum. (e.g. enum Foo = {Bar,})
  • "generics" is for trailing comma in generic. (e.g. function foo<T,>() {})
  • "tuples" is for trailing comma in tuple. (e.g. type Foo = [string,])

• See the other options allowed

Taken with ❤️ from ESLint core

Attributes

• ✅ Recommended
• 🔧 Fixable
• 💭 Requires type information