TypeScript-All-In-One(A.R)

Type-Only Imports and Export

Type-Only Imports and Export allows you to import or export types without importing or exporting the values or functions associated with those types. This can be useful for reducing the size of your bundle.

To use type-only imports, you can use the import type keyword.

TypeScript permits using both declaration and implementation file extensions (.ts, .mts, .cts, and .tsx) in type-only imports, regardless of allowImportingTsExtensions settings.

For example:

import type { House } from './house.ts';

The following are supported forms:

import type T from './mod';
import type { A, B } from './mod';
import type * as Types from './mod';
export type { T };
export type { T } from './mod';