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Enforces consistent usage of type exports (consistent-type-exports)

TypeScript 3.8 added support for type-only exports.

Type-only exports allow you to specify that 1 or more named exports are exported as type-only. This allows transpilers to drop exports without knowing the types of the dependencies.

Rule Details

This rule aims to standardize the use of type exports style across a codebase.

Given a class Button, and an interface ButtonProps, examples of code:

export { Button } from 'some-library';
export type { ButtonProps } from 'some-library';

When Not To Use It

  • If you are using a TypeScript version less than 3.8, then you will not be able to use this rule as type exports are not supported.
  • If you specifically want to use both export kinds for stylistic reasons, you can disable this rule.

Attributes

  • ✅ Recommended
  • 🔧 Fixable
  • 💭 Requires type information